2014年12月6日土曜日

研究室セミナー & 今週の輪読

12/3 のセミナーでの文献紹介の担当は化学生態学研究室四年生の新井君で,紹介した論文は Tanaka, J. et al. Antheridiogen determines sex in ferns via a spatiotemporally split gibberellin synthesis pathway. Science 346, 469-473 (2014) でした.カニクサの造精器誘導物質であるアンセリジオーゲンが生体内に取り込まれてから活性型ジベレリンに変換されて造精器誘導活性を示していることを明らかにした報告でした.

今週の輪読では以下の論文を取り上げました.
655. Tanaka, J. et al. (2014). Antheridiogen determines sex in ferns via a spatiotemporally split gibberellin synthesis pathway. Science 346: 469–473.
656. Toyomasu, T. et al. Transcripts of two ent-copalyl diphosphate synthase genes differentially localize in rice plants according to their distinct biological roles. J. Exp. Bot. in press.
657. Tianpei, X. et al. (2015). Scorpion peptide LqhIT2 activates phenylpropanoid pathways via jasmonate to increase rice resistance to rice leafrollers. Plant Sci. 230: 1–11.
658. Xu, P., Choo, Y.-M., De La Rosa, A., and Leal, W.S. (2014). Mosquito odorant receptor for DEET and methyl jasmonate. Proc. Natl. Acad. Sci. USA 111: 16592–16597.
659. Park, H.L. et al. (2014). Antimicrobial activity of UV-induced phenylamides from rice leaves. Molecules 19: 18139–18151.

2014年11月29日土曜日

研究室セミナー & 今週の輪読

11/26 のセミナーでの文献紹介の担当は四年生の武山君で,紹介した論文は Ribot, C. et al. The Magnaporthe oryzae effector AVR1-CO39 is translocated into rice cells independently of a fungal-derived machinery. Plant J. 74, 1-12 (2013) でした.イネいもち病菌の非病原性エフェクタータンパク質 AVR1-CO39 がどのようにイネの細胞内に取り込まれるのかについての報告でした.

今週の輪読では以下の論文を取り上げました.
651. Kim, N.H., and Hwang, B.K. Pepper pathogenesis-related protein 4c is a plasma-membrane localized cysteine protease inhibitor that is required for plant cell death and defense signaling. Plant J. in press.
652. Ao, Y. et al. OsCERK1 and OsRLCK176 play important roles in peptidoglycan and chitin signaling in rice innate immunity. Plant J. in press.
653. Irmisch, S. et al. Herbivore-induced poplar cytochrome P450 enzymes of the CYP71 family convert aldoximes to nitriles which repel a generalist caterpillar. Plant J. in press.
654. Wouters, F.C. et al. (2014). Reglucosylation of the benzoxazinoid DIMBOA with inversion of stereochemical configuration is a detoxification strategy in lepidopteran herbivores. Angew. Chem. Int. Ed. 53: 11320–11324.

2014年11月24日月曜日

化学生態学実験 III,研究室セミナー,輪読

11/10-21 の二週間は化学生態学実験 III が開講されました.今年度の受講生は 31 名でした.GC/MS があまりうまくいかずに少々手こずりましたが,その他は TA の学生さんたちのおかげでほぼ順調に実施することができました.

11/12 のセミナーでの文献紹介の担当は化学生態学研究室修士課程一年の藤原さんで,紹介した論文は Nakabayashi, R. et al. Enhancement of oxidative and drought tolerance in Arabidopsis by overaccumulation of antioxidant flavonoids. Plant J. 77, 367-379 (2014) でした.シロイヌナズナにおけるフラボノイドの蓄積と酸化および乾燥ストレス耐性の関係についての報告でした.

11/19 のセミナーでの文献紹介の担当は修士課程一年の渡辺さんで,紹介した論文は Furutachi, M., Kumagai, N., Watanabe, T. & Shibasaki, M. Chromatography-free synthesis of Corey’s intermediate for Tamiflu. Tetrahedron 70, 9113-9117 (2014) でした.タミフル合成中間体のクロマトグラフィーによる分離を用いない合成法についての報告でした.

11/10-21 の輪読では以下の論文を取り上げました.
641. Hoffmann, T., Krug, D., Hüttel, S., and Müller, R. (2014). Improving natural products identification through targeted LC-MS/MS in an untargeted secondary metabolomics workflow. Anal. Chem. 86: 10780–10788.
642. Wu, S., Shan, L., and He, P. (2014). Microbial signature-triggered plant defense responses and early signaling mechanisms. Plant Sci. 228: 118–126.
643. He, X. et al. (2014). Virus-mediated chemical changes in rice plants impact the relationship between non-vector planthopper Nilaparvata lugens Stål and its egg parasitoid Anagrus nilaparvatae Pang et Wang. PLoS ONE 9: e105373.
644. Kusari, S. et al. (2014). Tramadol–true natural product? Angew. Chem. Int. Ed. 53: 12073–12076.
645. Miyata, K. et al. (2014). Bifunctional plant receptor, OsCERK1, regulates both chitin-triggered immunity and arbuscular mycorrhizal symbiosis in rice. Plant Cell Physiol. 55: 1864–1872.
646. Ueno, M., Kihara, J., and Arase, S. Tryptamine and sakuranetin accumulation in Sekiguchi lesions associated with the light-enhanced resistance of the lesion mimic mutant of rice to Magnaporthe oryzae. J. Gen. Plant Pathol. in press.
647. Hilfiker, O. et al. Insect eggs induce a systemic acquired resistance in Arabidopsis. Plant J. in press.
648. Wittek, F. et al. (2014). Arabidopsis ENHANCED DISEASE SUSCEPTIBILITY1 promotes systemic acquired resistance via azelaic acid and its precursor 9-oxo nonanoic acid. J. Exp. Bot. 65: 5919–5931.
649. Yan, J., Lipka, A.E., Schmelz, E.A., Buckler, E.S., and Jander, G. Accumulation of 5-hydroxynorvaline in maize (Zea mays) leaves is induced by insect feeding and abiotic stress. J. Exp. Bot. in press.
650. Tian, Y. et al. (2014). The fungal leaf endophyte Paraconiothyrium variabile specifically metabolizes the host-plant metabolome for its own benefit. Phytochemistry 108: 95–101.

2014年11月8日土曜日

鍬耕祭,研究室セミナー,今週の輪読

11/1, 2 には阿見キャンパスで鍬耕祭が開催されました.11/1 には主に高校生を対象とした秋のオープンキャンパスと農学部の一年次生を対象とした阿見キャンパス見学会(フレッシュマン・ゼミナールという授業の一部)も同時開催され,研究室公開を実施しました.今年は筑波大の学園祭や大手予備校の模試と日程が重なってしまったという話もあり,研究室見学に来てくれた高校生は残念ながらゼロでした.しかし,一年次生は(授業の一環ということもあり)熱心に見学してくれました.また,何人かの研究室の卒業生と在学生のご父兄にも訪問していただきました.

今週のセミナーでの文献紹介の担当は化学生態学研究室修士課程一年の武井さんで,紹介した論文は Bosch, M. et al. Jasmonic acid and its precursor 12-oxophytodienoic acid control different aspects of constitutive and induced herbivore defenses in tomato. Plant Physiol. 166, 396-410 (2014) でした.ジャスモン酸の生合成前駆体である 12-オキソフィトジエン酸がトマトにおいてジャスモン酸とは異なった機構で食害昆虫に対する抵抗性に関与していることについての報告でした.

今週の輪読では以下の論文を取り上げました.
637. Aranega-Bou, P., Leyva, M.D.L.O., Finiti, I., García, A., Pilar, and González, B., Carmen (2014). Priming of plant resistance by natural compounds. Hexanoic acid as a model. Front. Plant Sci. 5: 488.
638. Köhler, A. et al. Within-plant distribution of 1,4-benzoxazin-3-ones contributes to herbivore niche differentiation in maize. Plant Cell Environ. in press.
639. Noctor, G., Lelarge-Trouverie, C., and Mhamdi, A. The metabolomics of oxidative stress. Phytochemistry in press.
640. Tabata, R. et al. (2014). Perception of root-derived peptides by shoot LRR-RKs mediates systemic N-demand signaling. Science 346: 343–346.

2014年10月31日金曜日

研究室セミナー & 今週の輪読

今週のセミナーでの文献紹介の担当は修士課程二年の濱名君で,紹介した論文は Serrano, M. et al. Export of salicylic acid from the chloroplast requires the multidrug and toxin extrusion-like transporter EDS5. Plant Physiol. 162, 1815-1821 (2013) でした.葉緑体で生合成されたサリチル酸を細胞質へ輸送するトランスポーターについての報告でした.

今週の輪読では以下の論文を取り上げました.
632. Ibdah, M. et al. (2014). Identification and cloning of an NADPH-dependent hydroxycinnamoyl-CoA double bond reductase involved in dihydrochalcone formation in Malus × domestica Borkh. Phytochemistry 107: 24–31.
633. Rahman, A., Uddin, W., and Wenner, N.G. Induced systemic resistance responses in perennial ryegrass against Magnaporthe oryzae elicited by semi-purified surfactin lipopeptides and live cells of Bacillus amyloliquefaciens. Mol. Plant Pathol. in press.
634. Schuman, M.C., Palmer-Young, E.C., Schmidt, A., Gershenzon, J., and Baldwin, I.T. (2014). Ectopic terpene synthase expression enhances sesquiterpene emission in Nicotiana attenuata without altering defense or development of transgenic plants or neighbors. Plant Physiol. 166: 779–797.
635. Ji, H. et al. (2014). ATP-dependent binding cassette transporter G family member 16 increases plant tolerance to abscisic acid and assists in basal resistance against Pseudomonas syringae DC3000. Plant Physiol. 166: 879–888.
636. Singh, I., and Shah, K. Exogenous application of methyl jasmonate lowers the effect of cadmium-induced oxidative injury in rice seedlings. Phytochemistry in press.

2014年10月25日土曜日

新学期,タイからの客人,研究室セミナー,輪読

しばらくブログ更新をサボってしまいましが,大学は 10 月から新学期が始まり,2, 3 年生もキャンパスに戻ってきました.

研究室では 10 月初めにタイの Naresuan 大学の学生さん 2 名が実験するために滞在しました.わずか 5 日間だけの短い滞在で,ちょっと思うような結果も出なかったのですが,今後は共同研究することになりそうです.また,指導教員の先生とその同僚の先生方も最後の二日間は阿見キャンパスにお見えになりました.

夏休み中は研究の経過報告だけを行っていた生物制御化学・化学生態学の合同研究室セミナーも 10 月初めには中間発表を行い,今週からは論文紹介も始まりました.今週の文献紹介の担当は博士課程二年の堀江君で,紹介した論文は Huffaker, A. et al. Plant elicitor peptides are conserved signals regulating direct and indirect antiherbivore defense. Proc. Natl. Acad. Sci. USA 110, 5707-5712 (2013) でした.植物の内因性ペプチドを介したシグナル伝達が食害昆虫に対する直接的および間接的防御機構に関与していることを報告した論文です.

9/22-10/24 の輪読では下記の論文を取り上げました.
615. Spagnolo, A. et al. (2014). Differential responses of three grapevine cultivars to Botryosphaeria dieback. Phytopathology 104: 1021–1035.
616. Azizi, P. et al. Toward understanding of rice innate immunity against Magnaporthe oryzae. Crit. Rev. Biotechnol. in press.
617. Pedras, M.S.C., and To, Q.H. The first non-indolyl cruciferous phytoalexins: Nasturlexins and tridentatols, a striking convergent evolution of defenses in terrestrial plants and marine animals? Phytochemistry in press.
618. Gerdt, J.P., and Blackwell, H.E. (2014). Competition studies confirm two major barriers that can preclude the spread of resistance to quorum-sensing inhibitors in bacteria. ACS Chem. Biol. 9: 2291–2299.
619. Xie, K., Chen, J., Wang, Q., and Yang, Y. (2014). Direct phosphorylation and activation of a mitogen-activated protein kinase by a calcium-dependent protein kinase in rice. Plant Cell 26: 3077–3089.
620. Koo, A.J. et al. (2014). Endoplasmic reticulum-associated inactivation of the hormone jasmonoyl-L-isoleucine by multiple members of the cytochrome P450 94 family in Arabidopsis. J. Biol. Chem. 289: 29728–29738.
621. Miyamoto, K. et al. (2015). Overexpression of the bZIP transcription factor OsbZIP79 suppresses the production of diterpenoid phytoalexin in rice cells. J. Plant Physiol. 173: 19–27.
622. Wu, J. et al. (2014). Protein profiles secreted from phylloplane of rice leaves free from cytosolic proteins: Application to study rice-Magnaporthe Oryzae interactions. Physiol. Mol. Plant Pathol. 88: 28–35.
623. Guo, H., Li, H., Zhou, S., Xue, H., and Miao, X. cis-12-Oxo-phytodienoic acid stimulates rice defense response to a piercing-sucking insect. Mol. Plant in press.
624. Park, S. et al. (2014). Molecular dissection of the response of a rice leucine-rich repeat receptor-like kinase (LRR-RLK) gene to abiotic stresses. J. Plant Physiol. 171: 1645–1653.
625. Falara, V., Alba, J.M., Kant, M.R., Schuurink, R.C., and Pichersky, E. (2014). Geranyllinalool synthases in Solanaceae and other angiosperms constitute an ancient branch of diterpene synthases involved in the synthesis of defensive compounds. Plant Physiol. 166: 428–441.
626. Galland, M. et al. (2014). Compartmentation and dynamics of flavone metabolism in dry and germinated rice seeds. Plant Cell Physiol. 55: 1646–1659.
627. Xu, M. et al. (2014). Characterization of an orphan diterpenoid biosynthetic operon from Salinispora arenicola. J. Nat. Prod. 77: 2144–2147.
628. Alazem, M., and Lin, N.-S. Roles of plant hormones in regulating host-virus interactions. Mol. Plant Pathol. in press.
629. Bailly, A. et al. The inter-kingdom volatile signal indole promotes root development by interfering with auxin signalling. Plant J. in press.
630. Quéro, A. et al. (2014). Improved stability of TMS derivatives for the robust quantification of plant polar metabolites by gas chromatography–mass spectrometry. J. Chromatogr. B 970: 36–43.
631. Matsuda, F. et al. Metabolome-genome-wide association study (mGWAS) dissects genetic architecture for generating natural variation in rice secondary metabolism. Plant J. in press.

2014年9月20日土曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.
611. Matsui, H. et al. (2014). Plasma membrane localization is essential for Oryza sativa Pto-interacting protein 1a-mediated negative regulation of immune signaling in rice. Plant Physiol. 166: 327–336.
612. Ho, L.T. et al. Isolation and identification of an allelopathic phenylethylamine in rice. Phytochemistry in press.
613. Giannakopoulou, A. et al. (2014). Variation in capsidiol sensitivity between Phytophthora infestans and Phytophthora capsici is consistent with their host range. PLoS ONE 9: e107462.
614. Marti, G. et al. (2014). Study of leaf metabolome modifications induced by UV-C radiations in representative Vitis, Cissus and Cannabis species by LC-MS based metabolomics and antioxidant assays. Molecules 19: 14004–14021.

2014年9月13日土曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.
606. Meesters, C. et al. A chemical inhibitor of jasmonate signaling targets JAR1 in Arabidopsis thaliana. Nat. Chem. Biol. in press.
607. Lee, S.-H. et al. Mutation of Oryza sativa CORONATINE INSENSITIVE 1b (OsCOI1b) delays leaf senescence. J. Integr. Plant Biol. in press.
608. Miyamoto, K. et al. (2014). Identification of target genes of the bZIP transcription factor OsTGAP1, whose overexpression causes elicitor-induced hyperaccumulation of diterpenoid phytoalexins in rice cells. PLoS ONE 9: e105823.
609. King, A.J., Brown, G.D., Gilday, A.D., Larson, T.R., and Graham, I.A. Production of bioactive diterpenoids in the Euphorbiaceae depends on evolutionarily conserved gene clusters. Plant Cell in press.
610. Gong, B. et al. (2014). Nitric oxide, as a downstream signal, plays vital role in auxin induced cucumber tolerance to sodic alkaline stress. Plant Physiol. Biochem. 83: 258–266.

2014年9月7日日曜日

停電 & 先週の輪読

9/6(土)は年に一度の電気設備点検のための停電がありました.停電に備えて,普段は常時稼働している NMR, LC/MS/MS, GC/MS のシャットダウンを行い,ついでに LC/MS/MS はロータリーポンプのオイル交換やインターフェース部の洗浄といったメンテナンスも実施しました.

先週の輪読では下記の論文を取り上げました.
601. Fernandez, J. et al. Plant defense suppression is mediated by a fungal sirtuin during rice infection by Magnaporthe oryzae. Mol. Microbiol. in press.
602. Kouzai, Y. et al. (2014). Targeted gene disruption of OsCERK1 reveals its indispensable role in chitin perception and involvement in the peptidoglycan response and immunity in rice. Mol. Plant Microbe Interact. 27: 975–982.
603. Singh, P., and Shah, K. (2014). Evidences for reduced metal-uptake and membrane injury upon application of nitric oxide donor in cadmium stressed rice seedlings. Plant Physiol. Biochem. 83: 180–184.
604. Leone, M., Keller, M.M., Cerrudo, I., and Ballaré, C.L. To grow or defend? Low red : far-red ratios reduce jasmonate sensitivity in Arabidopsis seedlings by promoting DELLA degradation and increasing JAZ10 stability. New Phytol. in press.
605. Christeller, J.T., and Galis, I. (2014). α-Linolenic acid concentration and not wounding per se is the key regulator of octadecanoid (oxylipin) pathway activity in rice (Oryza sativa L.) leaves. Plant Physiol. Biochem. 83: 117–125.

2014年8月30日土曜日

水漏れ & 今週の輪読

8/29 に生物制御化学第二研究室の実験台の中を通っている水道管の腐食による破損が発生し,研究室が水浸しになるという事故が発生しました.大学の施設管理にお願いして水道の元栓を閉めてもらったのですが,事故発生時に担当の人が席を外されていたため,元栓を締めるまでにしばらく時間がかかってしまいました.その間にも水はどんどんあふれてきて,二研だけでなく一研,戸嶋先生の教授室,私の部屋,測定室,廊下がかなりの水浸しになってしまいました.学生さんたちと総出で排水作業を行って,三時間ぐらいで何とか復旧することができましたが,かなり大変な作業でした.すぐに水道屋さんが来てくれて,応急処置として破損した水道管を閉じてくれたので,他の場所では水道も使えるようになりました.

大学の研究室が入っている建物も築 20 年以上が経過しているため,いろいろガタが来ているようです.水道管も一斉点検や交換などの保守をした方が良い時期だと思うのですが,なかなか予算が取れないようで,簡単にはいかないみたいです.しかし,このような事故が休日や夜間,あるいは上の階(我々の研究室は一階)で起こっていたら,もっと大変なことになっていたはずなので,今後もちょっと心配です.

今週の輪読では下記の論文を取り上げました.
597. Agarrwal, R., Bentur, J.S., and Nair, S. Gas chromatography mass spectrometry based metabolic profiling reveals biomarkers involved in rice-gall midge interactions. J. Integr. Plant Biol. in press.
598. Bosch, M. et al. Jasmonic acid and its precursor 12-oxophytodienoic acid control different aspects of constitutive and induced herbivore defenses in tomato. Plant Physiol. in press.
599. Zhang, H., Wu, Z., Wang, C., Li, Y., and Xu, J.-R. (2014). Germination and infectivity of microconidia in the rice blast fungus Magnaporthe oryzae. Nat. Commun. 5: 4518.
600. Hasegawa, M. et al. (2014). Analysis on blast fungus-responsive characters of a flavonoid phytoalexin sakuranetin; accumulation in infected rice leaves, antifungal activity and detoxification by fungus. Molecules 19: 11404–11418.

2014年8月23日土曜日

大学院入試,夏休み,輪読

またしばらくブログ更新をさぼってしまいました. 8/2 には茨城大学大学院農学研究科の入試が実施されました.ここ二三年,大学院進学者が減少傾向ですので,なるべく多くの受験者に合格していただきたいところです.

茨城大学では 8/6 で前期の期末試験が終了して,三年生以下は夏休みに入りました.研究室は 8/13-17 は大学で決まっている一斉休業期間だったので,お休みにしましたが,それ以外は通常営業です.

7/28-8/22 の輪読では夏期の論文を取り上げました.
581. Yu, P., Hegeman, A.D., and Cohen, J.D. A facile means for the identification of indolic compounds from plant tissues. Plant J. in press.
582. Zhang, Y., Smith, P., Maximova, S.N., and Guiltinan, M.J. Application of glycerol as a foliar spray activates the defence response and enhances disease resistance of Theobroma cacao. Mol. Plant Pathol. in press.
583. Nguyen, V.N.T., Moon, S., and Jung, K.-H. (2014). Genome-wide expression analysis of rice ABC transporter family across spatio-temporal samples and in response to abiotic stresses. J. Plant Physiol. 171: 1276–1288.
584. Shiga, K. et al. (2014). Metabolic profiling approach to explore compounds related to the umami intensity of soy sauce. J. Agric. Food Chem. 62: 7317–7322.
585. Li, R.-Y., Wu, X.-M., Yin, X.-H., Liang, J.-N., and Li, M. (2014). The natural product citral can cause significant damage to the hyphal cell walls of Magnaporthe grisea. Molecules 19: 10279–10290.
586. Xie, G., Sasaki, K., Imai, R., and Xie, D. (2014). A redox-sensitive cysteine residue regulates the kinase activities of OsMPK3 and OsMPK6 in vitro. Plant Sci. 227: 69–75.
587. Huynh, N.T., Smagghe, G., Gonzales, G.B., Van, C., John, and Raes, K. (2014). Enzyme-assisted extraction enhancing the phenolic release from cauliflower (Brassica oleracea L. var. botrytis) outer leaves. J. Agric. Food Chem. 62: 7468–7476.
588. Awakawa, T. et al. (2014). A methyltransferase initiates terpene cyclization in teleocidin B biosynthesis. J. Am. Chem. Soc. 136: 9910–9913.
589. Petutschnig, E.K. et al. A novel Arabidopsis CHITIN ELICITOR RECEPTOR KINASE 1 (CERK1) mutant with enhanced pathogen-induced cell death and altered receptor processing. New Phytol. in press.
590. Akagi, A. et al. WRKY45-dependent priming of diterpenoid phytoalexin biosynthesis in rice and the role of cytokinin in triggering the reaction. Plant Mol. Biol. in press.
591. Becker, L., Carré, V., Poutaraud, A., Merdinoglu, D., and Chaimbault, P. (2014). MALDI mass spectrometry imaging for the simultaneous location of resveratrol, pterostilbene and viniferins on grapevine leaves. Molecules 19: 10587–10600.
592. Xu, X.-H. et al. (2014). The rice endophyte Harpophora oryzae genome reveals evolution from a pathogen to a mutualistic endophyte. Sci. Rep. 4: 5783.
593. Chen, M. et al. A novel elicitor identified from Magnaporthe oryzae triggers defense responses in tobacco and rice. Plant Cell Rep. in press.
594. Schenk, S.T. et al. (2014). N-Acyl-homoserine lactone primes plants for cell wall reinforcement and induces resistance to bacterial pathogens via the salicylic acid/oxylipin pathway. Plant Cell 26: 2708–2723.
595. Kazan, K., and Lyons, R. (2014). Intervention of phytohormone pathways by pathogen effectors. Plant Cell 26: 2285–2309.
596. Hayashi, K.- et al. (2014). Auxin transport sites are visualized in planta using fluorescent auxin analogs. Proc. Natl. Acad. Sci. USA 111: 11557–11562.

2014年7月26日土曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.
577. Hallmann, C.A., Foppen, R.P.B., van, T., Chris A. M., de, K., Hans, and Jongejans, E. (2014). Declines in insectivorous birds are associated with high neonicotinoid concentrations. Nature 511: 341–343.
578. Yang, J.-O., Nakayama, N., Toda, K., Tebayashi, S., and Kim, C.-S. (2014). Structural determination of elicitors in Sogatella furcifera (Horváth) that induce Japonica rice plant varieties (Oryza sativa L.) to produce an ovicidal substance against S. furcifera eggs. Biosci. Biotechnol. Biochem. 78: 937–942.
579. Nakamura, Y. et al. Synthesis of 6-substituted 1-oxoindanoyl isoleucine conjugates and modeling studies with the COI1-JAZ co-receptor complex of lima bean. J. Chem. Ecol. in press.
580. Vandenbrink, J.P., Brown, E.A., Harmer, S.L., and Blackman, B.K. (2014). Turning heads: The biology of solar tracking in sunflower. Plant Sci. 224: 20–26.

2014年7月21日月曜日

オープンキャンパス,研究室セミナー,輪読

7/19(土)に茨城大学農学部オープンキャンパスが開催されました.研究室公開は 9:30-15:00 に行われ,午前中にはまずまずの見学者の方がお見えになりました.高校生の親子連れの見学者の方が多く,中には専門的なことにかなり突っ込んでくるお父さんもいらっしゃいました.研究棟の一階は生物制御化学研究室しかなく,やや寂しい雰囲気なので,例年見学のお客さんが少なめなのですが,今年も午後はあまりお客さんがいませんでした.

7/9 の研究室セミナーでの文献紹介の担当は四年生の渡邉さんで,紹介した論文は Rosseto, R. & Hajdu, J. Synthesis of phospholipids on a glyceric acid scaffold: design and preparation of phospholipase A2 specific substrates. Tetrahedron 70, 3155-3165 (2014) でした.ホスホリパーゼ A2 の活性測定などのプローブとして用いることができる基質アナログの合成研究についての論文です.

7/16 の研究室セミナーでの文献紹介の担当は化学生態学研究室四年生の横山さんで,紹介した論文は Paque, S. et al. AUXIN BINDING PROTEIN1 links cell wall remodeling, auxin signaling, and cell expansion in Arabidopsis. Plant Cell 26, 280-295 (2014) でした.AUXIN BINDING PROTEIN 1 の細胞伸長における機能を細胞壁のリモデリングに着目して解析した論文です.

先週及び先々週の輪読では下記の論文を取り上げました.
568. Lutz, J.A., Kulshrestha, M., Rogers, D.T., and Littleton, J.M. A nicotinic receptor-mediated anti-inflammatory effect of the flavonoid rhamnetin in BV2 microglia. Fitoterapia in press.
569. Korneli, C., Danisman, S., and Staiger, D. Differential control of pre-invasive and post-invasive antibacterial defense by the Arabidopsis circadian clock. Plant Cell Physiol. in press.
570. Al Atalah, B. et al. (2014). Transcriptional behavior of EUL-related rice lectins toward important abiotic and biotic stresses. J. Plant Physiol. 171: 986–992.
571. Lam, P.Y., Zhu, F.-Y., Chan, W.L., Liu, H., and Lo, C. (2014). Cytochrome P450 93G1 is a flavone synthase II that channels flavanones to the biosynthesis of tricin O-linked conjugates in rice. Plant Physiol. 165: 1315–1327.
572. King, A.M. et al. (2014). Aspergillomarasmine A overcomes metallo-β-lactamase antibiotic resistance. Nature 510: 503–506.
573. Appel, H.M., and Cocroft, R.B. Plants respond to leaf vibrations caused by insect herbivore chewing. Oecologia in press.
574. Monte, I. et al. (2014). Rational design of a ligand-based antagonist of jasmonate perception. Nat. Chem. Biol. 10: 671–676.
575. Zander, M., Thurow, C., and Gatz, C. TGA transcription factors activate the salicylic acid-suppressible branch of the ethylene-induced defense program by regulating ORA59 expression. Plant Physiol. in press.
576. Li, B., Bhandari, D.R., Janfelt, C., Römpp, A., and Spengler, B. Natural products in licorice (Glycyrrhiza glabra) rhizome imaged at the cellular level by atmospheric pressure Matrix-Assisted Laser Desorption/Ionization Tandem Mass Spectrometry Imaging. Plant J. in press.

2014年7月4日金曜日

研究室セミナー & 輪読

また,しばらくブログ更新をさぼってしまいました.

6/11 の研究室セミナーでの文献紹介の担当は化学生態学研究室四年生の新井君で,紹介した論文は Ko, D. et al. Arabidopsis ABCG14 is essential for the root-to-shoot translocation of cytokinin. Proc. Natl. Acad. Sci. USA 111, 7150-7155 (2014) でした.シロイヌナズナでの根からは地上部へのサイトカイニンの輸送に関与する ABC トランスポーターについての論文です.

6/18 は教員の都合でセミナーはお休みでした.

6/25 の研究室セミナーでの文献紹介の担当は四年生の酒井君で,紹介した論文は Fernandez, J. & Wilson, R. A. Characterizing roles for the glutathione reductase, thioredoxin reductase and thioredoxin peroxidase-encoding genes of Magnaporthe oryzae during rice blast disease. PLoS ONE 9, e87300 (2014) でした.イネいもち病菌の感染にグルタチオンとチオレドキシンの還元酵素が寄与していることを報告した論文です.

7/2 の研究室セミナーでの文献紹介の担当は四年生の照山君で,紹介した論文は Yoshida, M., Saito, K., Fujino, Y. & Doi, T. A concise total synthesis of biologically active frutinones via tributylphosphine-catalyzed tandem acyl transfer-cyclization. Tetrahedron 70, 3452-3458 (2014) でした.抗真菌活性を持つフラボノイド化合物フルチノン類の全合成を報告した論文です.

6/9-7/4 の輪読では下記の論文を取り上げました.
548. Spence, C. et al. (2014). Natural rice rhizospheric microbes suppress rice blast infections. BMC Plant Biol. 14: 130. 549. Kim, Y., Komoda, E., Miyashita, M., and Miyagawa, H. (2014). Continuous stimulation of the plant immune system by the peptide elicitor PIP-1 is required for phytoalexin biosynthesis in tobacco cells. J. Agric. Food Chem. 62: 5781–5788.
550. Chujo, T. et al. (2014). Overexpression of phosphomimic mutated OsWRKY53 leads to enhanced blast resistance in rice. PLoS ONE 9: e98737.
551. Liu, W., Liu, J., Triplett, L., Leach, J.E., and Wang, G.-L. Novel insights into rice innate immunity against bacterial and fungal pathogens. Annu. Rev. Phytopathol. in press.
552. Jayaraman, D., Gilroy, S., and Ané, J.-M. (2014). Staying in touch: mechanical signals in plant–microbe interactions. Curr. Opin. Plant Biol. 20: 104–109.
553. Walters, D.R. et al. (2014). Control of foliar pathogens of spring barley using a combination of resistance elicitors. Front. Plant Sci. 5: 241.
554. Xu, E., and Brosche, M. (2014). Salicylic acid signaling inhibits apoplastic reactive oxygen species signaling. BMC Plant Biol. 14: 155.
555. Zernova, O.V. et al. (2014). Regulation of plant immunity through modulation of phytoalexin synthesis. Molecules 19: 7480–7496.
556. Nakasu, E.Y.T. et al. (2014). Novel biopesticide based on a spider venom peptide shows no adverse effects on honeybees. Proc. R. Soc. B 281: 20140619.
557. Taguchi, Y., Elsharkawy, M.M., Hassan, N., and Hyakumachi, M. (2014). A novel method for controlling rice blast disease using fan-forced wind on paddy fields. Crop Prot. 63: 68–75.
558. Tooker, J.F., and Helms, A.M. Phytohormone dynamics associated with gall insects, and their potential role in the evolution of the gall-inducing habit. J. Chem. Ecol. in press.
559. Zhang, N., Lariviere, A., Tonsor, S.J., and Traw, M.B. (2014). Constitutive camalexin production and environmental stress response variation in Arabidopsis populations from the Iberian Peninsula. Plant Sci. 225: 77–85.
560. Floková, K. et al. UHPLC–MS/MS based target profiling of stress-induced phytohormones. Phytochemistry in press.
561. Misra, B.B., Assmann, S.M., and Chen, S. Plant single-cell and single-cell-type metabolomics. Trends Plant Sci. in press.
562. Yang, X., Neta, P., and Stein, S.E. (2014). Quality control for building libraries from electrospray ionization tandem mass spectra. Anal. Chem. 86: 6393–6400.
563. Palmer, A.G., Senechal, A.C., Mukherjee, A., Ané, J.-M., and Blackwell, H.E. Plant responses to bacterial N-acyl l-homoserine lactones are dependent on enzymatic degradation to l-homoserine. ACS Chem. Biol. in press.
564. Giron, D., and Glevarec, G. Cytokinin-induced phenotypes in plant-insect interactions: learning from the bacterial world. J. Chem. Ecol. in press.
565. Wei, J. et al. (2014). Reciprocal crosstalk between jasmonate and salicylate defence-signalling pathways modulates plant volatile emission and herbivore host-selection behaviour. J. Exp. Bot. 65: 3289–3298.
566. Zheng, T., and Nolan, E.M. Enterobactin-mediated delivery of β-lactam antibiotics enhances antibacterial activity against pathogenic Escherichia coli. J. Am. Chem. Soc. in press.
567. Campos, M.L., Kang, J.-H., and Howe, G.A. Jasmonate-triggered plant immunity. J. Chem. Ecol. in press.

2014年6月6日金曜日

研究室セミナー & 今週の輪読

今週の研究室セミナーでの文献紹介の担当は四年生の武山君で,紹介した論文は Samalova, M. et al. Nitric oxide generated by the rice blast fungus Magnaporthe oryzae drives plant infection. New Phytol. 197, 207-222 (2013) でした.イネいもち病菌の感染成立に一酸化窒素が関与しているということを報告した論文です.

今週の輪読では下記の論文を取り上げました.
543. Attaran, E. et al. Temporal dynamics of growth and photosynthesis suppression in response to jasmonate signaling. Plant Physiol. in press.
544. Sun, H. et al. Scopoletin is a phytoalexin against Alternaria alternata in wild tobacco dependent on jasmonate signalling. J. Exp. Bot. in press.
545. Kawano, Y. et al. Palmitoylation-dependent membrane localization of the rice R protein Pit is critical for the activation of the small GTPase OsRac1. J. Biol. Chem. in press.
546. Becker, E.-M. et al. (2014). Infection of corn ears by Fusarium spp. induces the emission of volatile sesquiterpenes. J. Agric. Food Chem. 62: 5226–5236.
547. Lucas, J.A., García-Cristobal, J., Bonilla, A., Ramos, B., and Gutierrez-Mañero, J. (2014). Beneficial rhizobacteria from rice rhizosphere confers high protection against biotic and abiotic stress inducing systemic resistance in rice seedlings. Plant Physiol. Biochem. 82: 44–53.

2014年5月31日土曜日

研究室セミナー & 今週の輪読

今週の研究室セミナーでの文献紹介の担当は修士課程一年生の渡辺さんで,紹介した論文は Lu, J. M. H., Perkins, M. V. & Griesser, H. J. Total synthesis and structural confirmation of the antibacterial diterpene leubethanol. Tetrahedron 69, 6468-6473 (2013) でした.抗菌活性ジテルペンの全合成研究の報告です.

今週の輪読では下記の論文を取り上げました.
538. Zhang, Y., Luo, Z., Shao, Z., Yu, C., and Wang, S. (2014). Effects of antioxidants of bamboo leaves and flavonoids on 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) formation in chemical model systems. J. Agric. Food Chem. 62: 4798–4802.
539. Takeuchi, J. et al. (2014). Designed abscisic acid analogs as antagonists of PYL-PP2C receptor interactions. Nat. Chem. Biol. 10: 477–482.
540. Anderson, T.M. et al. (2014). Amphotericin forms an extramembranous and fungicidal sterol sponge. Nat. Chem. Biol. 10: 400–406.
541. Marita, J.M., Hatfield, R.D., Rancour, D.M., and Frost, K.E. (2014). Identification and suppression of the p-coumaroyl CoA:hydroxycinnamyl alcohol transferase in Zea mays L. Plant J. 78: 850–864.
542. Kårlund, A. et al. (2014). Polyphenols in strawberry (Fragaria × ananassa) leaves induced by plant activators. J. Agric. Food Chem. 62: 4592–4600.

2014年5月23日金曜日

研究室セミナー & 今週の輪読

今週の研究室セミナーでの文献紹介の担当は化学生態学研究室修士課程一年生の藤原さんで,紹介した論文は Sakata, T. et al. Reduction of gibberellin by low temperature disrupts pollen development in rice. Plant Physiol. 164, 2011-2019 (2014) でした.イネの低温による花粉の発達の異常にはジベレリンの現象が関与していることを報告した論文です.

今週の輪読では下記の論文を取り上げました.
533. Luna, E. et al. (2014). Plant perception of γ-aminobutyric acid is mediated by an aspartyl-tRNA synthetase. Nat. Chem. Biol. 10: 450–456.
534. Huot, B., Yao, J., Montgomery, B.L., and He, S.Y. Growth-defense tradeoffs in plants: a balancing act to optimize fitness. Mol. Plant in press.
535. Gupta, O.P., Sharma, P., Gupta, R.K., and Sharma, I. (2014). Current status on role of miRNAs during plant–fungus interaction. Physiol. Mol. Plant Pathol. 85: 1–7.
536. Blümke, A. et al. (2014). Secreted fungal effector lipase releases free fatty acids to inhibit innate immunity-related callose formation during wheat head infection. Plant Physiol. 165: 346–358.
537. Yamaguchi, N. et al. (2014). Gibberellin acts positively then negatively to control onset of flower formation in Arabidopsis. Science 344: 638–641.

2014年5月17日土曜日

研究室セミナー & 今週の輪読

今週の研究室セミナーでの文献紹介の担当は化学生態学研究室修士課程一年生の武井さんで,紹介した論文は Prince, D. C., Drurey, C., Zipfel, C. & Hogenhout, S. The leucine-rich repeat receptor-like kinase BRASSINOSTEROID INSENSITIVE1-ASSOCIATED KINASE1 and the cytochrome P450 PHYTOALEXIN DEFICIENT3 contribute to innate immunity to aphids in Arabidopsis. Plant Physiol. 164, 2207-2219 (2014) でした.イロイヌナズナのアブラムシに対する防御応答に BAK1 や PAD3 というタンパク質が関与していることを報告した論文です.

今週の輪読では下記の論文を取り上げました.
528. Debois, D. et al. (2014). Spatiotemporal monitoring of the antibiome secreted by Bacillus biofilms on plant roots using MALDI Mass Spectrometry Imaging. Anal. Chem. 86: 4431–4438.
529. Lin, Y.-M. et al. (2014). Phytoalexin biosynthesis genes are regulated and involved in plant response to Ralstonia solanacearum infection. Plant Sci. 224: 86–94.
530. Chen, X.-L. et al. (2014). N-Glycosylation of effector proteins by an α-1,3-mannosyltransferase is required for the rice blast fungus to evade host innate immunity. Plant Cell 26: 1360–1376.
531. Kruve, A., Kaupmees, K., Liigand, J., and Leito, I. Negative electrospray ionization via deprotonation: predicting the ionization efficiency. Anal. Chem. in press.
532. Kumar, D. Salicylic acid signaling in disease resistance. Plant Sci. in press.

2014年5月9日金曜日

研究室セミナー & 今週の輪読

今週の研究室セミナーでの文献紹介の担当は修士課程二年生の濱名君で,紹介した論文は Hoi, K. K. et al. Dissecting the insect metabolic machinery using twin ion mass spectrometry: a single P450 enzyme metabolizing the insecticide imidacloprid in vivo. Anal. Chem. 86, 3525-3532 (2014) でした.同位体標識化合物を利用するツインイオン質量分析法という方法を用いて,ネオニコチノイド系殺虫剤イミダクロプリドのショウジョウバエでの代謝を調べた論文です.

今週の輪読では下記の論文を取り上げました.
525. Hammerbacher, A. et al. (2014). Flavan-3-ols in Norway spruce: biosynthesis, accumulation, and function in response to attack by the bark beetle-associated fungus Ceratocystis polonica. Plant Physiol. 164: 2107–2122.
526. Watkins, J.M., Hechler, P.J., and Muday, G.K. (2014). Ethylene-induced flavonol accumulation in guard cells suppresses reactive oxygen species and moderates stomatal aperture. Plant Physiol. 164: 1707–1717.
527. Qiao, W., Li, C., and Fan, L.-M. (2014). Cross-talk between nitric oxide and hydrogen peroxide in plant responses to abiotic stresses. Environ. Exp. Bot. 100: 84–93.

2014年5月2日金曜日

研究室セミナー & 今週の輪読

今週から研究室セミナーでの文献紹介が始まりました.今週の研究室セミナーでの文献紹介の担当は博士課程二年生の堀江君で,紹介した論文は Tamura, T., Kioi, Y., Miki, T., Tsukiji, S. & Hamachi, I. Fluorophore labeling of native FKBP12 by ligand-directed tosyl chemistry allows detection of its molecular interactions in vitro and in living cells. J. Am. Chem. Soc. 135, 6782-6785 (2013) でした.タンパク質にリガンド特異的に蛍光プローブを共有結合させることによって,タンパク質-タンパク質相互作用を検出するという内容の論文です.

今週の輪読では下記の論文を取り上げました.
521. Duan, L., Liu, H., Li, X., Xiao, J., and Wang, S. Multiple phytohormones and phytoalexins are involved in disease resistance to Magnaporthe oryzae invaded from roots in rice. Physiol. Plant. in press.
522. Plaza, M. et al. (2014). Substituent effects on in vitro antioxidizing properties, stability, and solubility in flavonoids. J. Agric. Food Chem. 62: 3321–3333.
523. Nakamura, Y. et al. (2014). Arabidopsis florigen FT binds to diurnally oscillating phospholipids that accelerate flowering. Nat. Commun. 5: 3553.
524. MacLean, A.M. et al. (2014). Phytoplasma effector SAP54 hijacks plant reproduction by degrading MADS-box proteins and promotes insect colonization in a RAD23-dependent manner. PLoS Biol. 12: e1001835.

2014年4月25日金曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.
516. Macho, A.P. et al. (2014). A bacterial tyrosine phosphatase inhibits plant pattern recognition receptor activation. Science 343: 1509–1512.
517. Qiu, F. et al. (2014). 2D NMR barcoding and differential analysis of complex mixtures for chemical identification: the Actaea triterpenes. Anal. Chem. 86: 3964–3972.
518. Hoi, K.K. et al. (2014). Dissecting the insect metabolic machinery using twin ion mass spectrometry: a single P450 enzyme metabolizing the insecticide imidacloprid in vivo. Anal. Chem. 86: 3525–3532.
519. Gonzales, G.B., Smagghe, G., Raes, K., and Van Camp, J. (2014). Combined alkaline hydrolysis and ultrasound-assisted extraction for the release of nonextractable phenolics from cauliflower (Brassica oleracea var. botrytis) waste. J. Agric. Food Chem. 62: 3371–3376.
520. Wilkerson, C.G. et al. (2014). Monolignol ferulate transferase introduces chemically labile linkages into the lignin backbone. Science 344: 90–93.

2014年4月18日金曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.
511. Morita, Y. et al. (2014). A chalcone isomerase-like protein enhances flavonoid production and flower pigmentation. Plant J. 78: 294–304.
512. Qi, T. et al. Arabidopsis DELLA and JAZ proteins bind the WD-repeat/bHLH/MYB complex to modulate gibberellin and jasmonate signaling synergy. Plant Cell in press.
513. Taniguchi, S. et al. (2014). Isolation of jasmonate-induced sesquiterpene synthase of rice: Product of which has an antifungal activity against Magnaporthe oryzae. J. Plant Physiol. 171: 625–632.
514. Gamir, J., Pastor, V., Kaever, A., Cerezo, M., and Flors, V. (2014). Targeting novel chemical and constitutive primed metabolites against Plectosphaerella cucumerina. Plant J. 78: 227–240.
515. Fan, M. et al. (2014). The bHLH transcription factor HBI1 mediates the trade-off between growth and pathogen-associated molecular pattern–triggered immunity in Arabidopsis. Plant Cell 26: 828–841.

2014年4月11日金曜日

日本農芸化学会 2014 年度大会,新年度,輪読

3/27~30 に川崎市の明治大学生田キャンパスなどで日本農芸化学会 2014 年度大会が開催されました.本研究室からは修士課程の濱名君と私がそれぞれ「イネのフィトアレキシンであるサクラネチンのいもち病菌による代謝」,「紫外線照射イネ葉からの新規ファイトカサン類縁体の同定」というタイトルで口頭発表を行いました.農芸化学会の発表は,一昨年は各自の PC を接続してプロジェクターで行い,昨年は紙に出力したものを OHC で映写して行いましたが,今年は USB メモリでパワーポイントファイルを持って行って,会場の PC を使う形式になりました.私が見ていた会場では USB メモリの認識に時間がかかって若干遅れたりしたときはありましたが,概ね順調に発表は行われていました.濱名君の発表は,事前のチェックや発表練習では気が付かなかったちょっと恥ずかしいスライドの間違いもありましたが,まあ何とか終了しました.

4 月になりましたので,年度が切り替わりました.今年度の研究室メンバーは博士課程 2 年生 1 名,修士課程 2 年生 1 名,1 年生 1 名,学部 4 年生 4 名の計 6 名となりました.人数的には昨年より 1 名増です.

輪読は今週から再開し,下記の論文を取り上げました.
506. Kawai, Y., Ono, E., and Mizutani, M. (2014). Evolution and diversity of the 2–oxoglutarate-dependent dioxygenase superfamily in plants. Plant J. 78: 328–343.
507. Wölwer-Rieck, U., May, B., Lankes, C., and Wüst, M. (2014). Methylerythritol and mevalonate pathway contributions to biosynthesis of mono-, sesqui-, and diterpenes in glandular trichomes and leaves of Stevia rebaudiana Bertoni. J. Agric. Food Chem. 62: 2428–2435.
508. Ke, Y., Liu, H., Li, X., Xiao, J., and Wang, S. Rice OsPAD4 functions differently from Arabidopsis AtPAD4 in host-pathogen interactions. Plant J. in press.
509. Chassy, A.W., Adams, D.O., and Waterhouse, A.L. (2014). Tracing phenolic metabolism in Vitis vinifera berries with 13C6-phenylalanine: implication of an unidentified intermediate reservoir. J. Agric. Food Chem. 62: 2321–2326.
510. Gaquerel, E., Gulati, J., and Baldwin, I.T. Revealing insect herbivory-induced phenolamide metabolism: from single genes to metabolic network plasticity analysis. Plant J. in press.

2014年3月20日木曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.学会や年度の切り替わり時期で学生さんが少ないため,輪読は二週間お休みして,4/7 再開予定です.
503. Hubert, J. et al. (2014). Identification of natural metabolites in mixture: a pattern recognition strategy based on 13C NMR. Anal. Chem. 86: 2955–2962.
504. Prince, D.C., Drurey, C., Zipfel, C., and Hogenhout, S. The leucine-rich repeat receptor-like kinase BAK1 and the cytochrome P450 PAD3 contribute to innate immunity to aphids in Arabidopsis. Plant Physiol. in press.
505. Gulati, J., Baldwin, I.T., and Gaquerel, E. The roots of plant defenses: integrative multivariate analyses uncover dynamic behaviors of gene and metabolic networks of roots elicited by leaf herbivory. Plant J. in press.

2014年3月14日金曜日

今週の輪読

今週の輪読では下記の論文を取り上げました.
498. Xin, G.-Z. et al. Rapid identification of plant materials by wooden-tip electrospray ionization mass spectrometry and a strategy to differentiate the bulbs of Fritillaria. Anal. Chim. Acta in press.
499. Xu, T. et al. (2014). Cell surface ABP1-TMK auxin-sensing complex activates ROP GTPase signaling. Science 343: 1025–1028.
500. Rojas, C.M., Senthil-Kumar, M., Tzin, V., and Mysore, K. (2014). Regulation of primary plant metabolism during plant-pathogen interactions and its contribution to plant defense. Front. Plant Sci. 5: 17.
501. Kang, J.-H. et al. (2014). The flavonoid biosynthetic enzyme chalcone isomerase modulates terpenoid production in glandular trichomes of tomato. Plant Physiol. 164: 1161–1174.
502. Aerts, J.T. et al. Patch clamp electrophysiology and capillary electrophoresis–mass spectrometry metabolomics for single cell characterization. Anal. Chem. in press.

2014年3月8日土曜日

卒論発表会,新しい冷却水循環装置,輪読

一ヶ月近くブログ更新をさぼってしまいました.この間,2/13, 14 に資源生物科学科の卒業論文発表会が開催されて,生物制御化学研究室の 4 名の四年生も無事に発表を終えました.例年のことですが,発表自体は練習の成果もあってそれなりに立派にできていましたが,質疑応答に関しては当日の緊張や日頃の勉強不足の影響でもうひと頑張りが必要だったように感じました.4 名中 3 名は就職,1 名は大学院進学予定ですが,卒論での経験を次の進路でも生かして頑張っていただきたいと思います.

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一研でロータリーエバポレーターや遠心型エバポレーターのために使っている冷却水循環装置は非常に古い器械でもうモーターは使えなくなってしまっていて,別な循環装置を送液に利用することによって,だましだまし使っていました(こちらの記事参照).何とか予算の目処が立ったので,この装置を更新することにして,2/22 に新しい冷却水循環装置が納品されました.東京理化の CA-1115A という装置です.従来の装置に比べると非常に音が静かで省スペースになりました.

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2/10-3/7 の輪読では下記の論文を取り上げました.
485. Van Oystaeyen, A. et al. (2014). Conserved class of queen pheromones stops social insect workers from reproducing. Science 343: 287–290.
486. Liu, Y. et al. Quantification of a botanical negative marker without an identical standard: ginkgotoxin in Ginkgo biloba. J. Nat. Prod. in press.
487. Schmelz, E.A. et al. Biosynthesis, elicitation and roles of monocot terpenoid phytoalexins. Plant J. in press.
488. Kästner, J. et al. (2014). Salicylic acid, a plant defense hormone, is specifically secreted by a molluscan herbivore. PLoS ONE 9: e86500.
489. Song, Y.Y. et al. (2014). Hijacking common mycorrhizal networks for herbivore-induced defence signal transfer between tomato plants. Sci. Rep. 4: 3915.
490. Nagel, R., Berasategui, A., Paetz, C., Gershenzon, J., and Schmidt, A. (2014). Overexpression of an isoprenyl diphosphate synthase in spruce leads to unexpected terpene diversion products that function in plant defense. Plant Physiol. 164: 555–569.
491. Shah, J., Chaturvedi, R., Chowdhury, Z., Venables, B., and Petros, R.A. Signaling by small metabolites in systemic acquired resistance. Plant J. in press.
492. Taurino, M. et al. (2014). Jasmonate-dependent modifications of the pectin matrix during potato development function as a defense mechanism targeted by Dickeya dadantii virulence factors. Plant J. 77: 418–429.
493. Sharfman, M., Bar, M., Schuster, S., Leibman, M., and Avni, A. (2014). Sterol-dependent induction of plant defense responses by a microbe-associated molecular pattern from Trichoderma viride. Plant Physiol. 164: 819–827.
494. Gika, H., Wilson, I., and Theodoridis, G. LC-MS-based holistic metabolic profiling. Problems, limitations, advantages, and future perspectives. J. Chromatogr. B in press.
495. VWang, W., Xie, Z.-P., and Staehelin, C. Functional analysis of chimeric LysM domain receptors mediating Nod factor-induced defense signaling in Arabidopsis thaliana and chitin-induced nodulation signaling in Lotus japonicus. Plant J. in press.
496. Boycheva, S., Daviet, L., Wolfender, J.-L., and Fitzpatrick, T.B. The rise of operon-like gene clusters in plants. Trends Plant Sci. in press.
497. LeBrun, E.G., Jones, N.T., and Gilbert, L.E. (2014). Chemical warfare among invaders: a detoxification interaction facilitates an ant invasion. Science 343: 1014–1017.

2014年2月10日月曜日

先週および先々週の輪読

先週および先々週の輪読では下記の論文を取り上げました.
475. Nakabayashi, R. et al. (2014). Enhancement of oxidative and drought tolerance in Arabidopsis by overaccumulation of antioxidant flavonoids. Plant J. 77: 367–379.
476. Irmisch, S. et al. (2013). Two herbivore-induced cytochrome P450 enzymes CYP79D6 and CYP79D7 catalyze the formation of volatile aldoximes involved in poplar defense. Plant Cell 25: 4737–4754.
477. Choi, J.-H. et al. (2014). The source of “fairy rings”: 2-azahypoxanthine and its metabolite found in a novel purine metabolic pathway in plants. Angew. Chem. Int. Ed. 53: 1552–1555.
478. Hayafune, M. et al. (2014). Chitin-induced activation of immune signaling by the rice receptor CEBiP relies on a unique sandwich-type dimerization. Proc. Natl. Acad. Sci. USA 111: E404–E413.
479. Liu, Y., Wu, Z., Feng, S., Yang, X., and Huang, D. (2014). Hormesis of glyceollin I, an induced phytoalexin from soybean, on budding yeast chronological lifespan extension. Molecules 19: 568–580.
480. Jiang, L. et al. (2013). DWARF 53 acts as a repressor of strigolactone signalling in rice. Nature 504: 401–405.
481. Zhou, F. et al. (2013). D14-SCFD3-dependent degradation of D53 regulates strigolactone signalling. Nature 504: 406–410.
482. Havaux, M. Carotenoid oxidation products as stress signals in plants. Plant J. in press.
483. Smith, J.M., Salamango, D.J., Leslie, M.E., Collins, C.A., and Heese, A. (2014). Sensitivity to flg22 is modulated by ligand-induced degradation and de novo synthesis of the endogenous flagellin-receptor FLAGELLIN-SENSING2. Plant Physiol. 164: 440–454.
484. Waters, M.T., Scaffidi, A., Sun, Y.K., Flematti, G.R., and Smith, S.M. The karrikin response system of Arabidopsis. Plant J. in press.

2014年1月26日日曜日

1/6-24 の輪読

またしばらくブログをさぼってしまいました.この三週間の輪読では下記の論文を取り上げました.
462. Belimov, A.A. et al. (2014). Abscisic acid metabolizing rhizobacteria decrease ABA concentrations in planta and alter plant growth. Plant Physiol. Biochem. 74: 84–91.
463. Karamat, F. et al. A coumarin-specific prenyltransferase catalyzes the crucial biosynthetic reaction for furanocoumarin formation in parsley. Plant J. in press.
464. Gozzo, F., and Faoro, F. (2013). Systemic acquired resistance (50 years after discovery): moving from the lab to the field. J. Agric. Food Chem. 61: 12473–12491.
465. Li, Y. et al. Multiple rice miRNAs are involved in immunity against the blast fungus Magnaporthe oryzae. Plant Physiol. in press.
466. Li, Z., and Li, L. (2014). Chemical-vapor-assisted electrospray ionization for increasing analyte signals in electrospray ionization mass spectrometry. Anal. Chem. 86: 331–335.
467. Bethke, G. et al. Arabidopsis PECTIN METHYLESTERASES contribute to immunity against Pseudomonas syringae. Plant Physiol. in press.
468. Misra, R.C., Maiti, P., Chanotiya, C.S., Shanker, K., and Ghosh, S. Methyl jasmonate-elicited transcriptional responses and pentacyclic triterpene biosynthesis in sweet basil. Plant Physiol. in press.
469. Zheng, W. et al. (2013). Comparative transcriptome analysis of two rice varieties in response to rice stripe virus and small brown planthoppers during early interaction. PLoS ONE 8: e82126.
470. Ross, A. et al. (2014). The Arabidopsis PEPR pathway couples local and systemic plant immunity. The EMBO Journal 33: 62–75.
471. Huchelmann, A. et al. S-Carvone suppresses cellulase-induced capsidiol production in Nicotiana tabacum by interfering with protein isoprenylation. Plant Physiol. in press.
472. Guo, R. et al. (2013). Jasmonic acid and glucose synergistically modulate the accumulation of glucosinolates in Arabidopsis thaliana. J. Exp. Bot. 64: 5707–5719.
473. Duan, C., Yu, J., Bai, J., Zhu, Z., and Wang, X. Induced defense responses in rice plants against small brown planthopper infestation. Crop J. in press.
474. Ginglinger, J.-F. et al. (2013). Gene coexpression analysis reveals complex metabolism of the monoterpene alcohol linalool in Arabidopsis flowers. Plant Cell 25: 4640–4657.