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四年生の武井さんで，紹介した論文は Abe, H. et al. Disarming the jasmonate-dependent plant defense makes nonhost Arabidopsis plants accessible to the American serpentine leafminer. Plant Physiol. 163, 1242-1253 (2013) でした．シロイヌナズナのジャスモン酸非感受性変異体 coi1-1 が野生型は食害を受けないマメハモグリバエの食害を受けることになることについての報告です．今週で今年の研究室セミナーは終了です．今年度の文献紹介も終了で，年明けからは研究報告のみのセミナーを行います．
今週の輪読では下記の論文を取り上げました．
453. Nakano, H. et al. (2013). Isolation and identification of phenolic compounds accumulated in brown rice grains ripened under high air temperature. J. Agric. Food Chem. 61: 11921–11928.
454. Groen, S.C. et al. Pathogen-triggered ethylene signaling mediates systemic-induced susceptibility to herbivory in Arabidopsis. Plant Cell in press.
455. Xiao, J. et al. (2013). Rice WRKY13 regulates cross talk between abiotic and biotic stress signaling pathways by selective binding to different cis-elements. Plant Physiol. 163: 1868–1882.
456. Nishimura, T. et al. YUCASIN is a potent inhibitor of YUCCA(s), a key enzyme in auxin biosynthesis. Plant J. in press.
457. Wankhede, D., Kumar, K., Singh, P., and Sinha, A. (2013). Involvement of Mitogen activated protein Kinase Kinase 6 in UV induced transcripts accumulation of genes in phytoalexin biosynthesis in rice. Rice 6: 35.
2013年12月21日土曜日
2013年12月15日日曜日
研究室セミナー & 輪読
先週の研究室セミナーでの文献紹介の担当は四年生の奥木さんで，紹介した論文は Stallforth, P. et al. A bacterial symbiont is converted from an inedible producer of beneficial molecules into food by a single mutation in the gacA gene. Proc. Natl. Acad. Sci. USA 110, 14528-14533 (2013) でした．キイロタマホロリカビの共生細菌が，単一の変異によって，キイロタマホコリカビの生存に有利な二次代謝産物を生産する共生関係からキイロタマホコリカビの食料になるという報告です．今週の担当は四年生の遠藤君で，紹介した論文は Mousavi, S. A. R., Chauvin, A., Pascaud, F., Kellenberger, S. & Farmer, E. E. GLUTAMATE RECEPTOR-LIKE genes mediate leaf-to-leaf wound signalling. Nature 500, 422-426 (2013) でした．傷害ストレスシグナルの葉から葉への伝達にはグルタミン酸受容体様タンパク質を介した電気的シグナルが関与していることを報告した論文です．
先週，今週の輪読では下記の論文を取り上げました．
443. Shimada, T.L. et al. Leaf oil body functions as a subcellular factory for the production of a phytoalexin in Arabidopsis thaliana. Plant Physiol. in press.
444. Pedras, M.S.C., and Minic, Z. The phytoalexins brassilexin and camalexin inhibit cyclobrassinin hydrolase, a unique enzyme from the fungal pathogen Alternaria brassicicola. Bioorg. Med. Chem. in press.
445. Zhang, Q.-F., Fu, Y.-J., Huang, Z.-W., Shangguang, X.-C., and Guo, Y.-X. (2013). Aqueous stability of astilbin: effects of pH, temperature, and solvent. J. Agric. Food Chem. 61: 12085–12091.
446. Nishizaki, Y. et al. (2013). p-Hydroxybenzoyl-glucose is a zwitter donor for the biosynthesis of 7-polyacylated anthocyanin in delphinium. Plant Cell 25: 4150–4165.
447. Pĕnčík, A. et al. (2013). Regulation of auxin homeostasis and gradients in arabidopsis roots through the formation of the indole-3-acetic acid catabolite 2-oxindole-3-acetic acid. Plant Cell 25: 3858–3870.
448. Onoyovwe, A. et al. (2013). Morphine biosynthesis in opium poppy involves two cell types: sieve elements and laticifers. Plant Cell 25: 4110–4122.
449. Keereetaweep, J., Blancaflor, E.B., Hornung, E., Feussner, I., and Chapman, K.D. (2013). Ethanolamide oxylipins of linolenic acid can negatively regulate Arabidopsis seedling development. Plant Cell 25: 3824–3840.
450. Martellini, F. et al. Can adaptation to metalliferous environments affect plant response to biotic stress? Insight from Silene paradoxa L. and phytoalexins. Environ. Exp. Bot. in press.
451. Qian, Q., Huang, L., Yi, R., Wang, S., and Ding, Y. Enhanced resistance to blast fungus in rice (Oryza sativa L.) by expressing the ribosome-inactivating protein alpha-momorcharin. Plant Sci. in press.
452. Li, T. et al. Jumonji C protein JMJ705-mediated removal of histone H3 lysine 27 trimethylation is involved in defense-related gene activation in rice. Plant Cell in press.
先週，今週の輪読では下記の論文を取り上げました．
443. Shimada, T.L. et al. Leaf oil body functions as a subcellular factory for the production of a phytoalexin in Arabidopsis thaliana. Plant Physiol. in press.
444. Pedras, M.S.C., and Minic, Z. The phytoalexins brassilexin and camalexin inhibit cyclobrassinin hydrolase, a unique enzyme from the fungal pathogen Alternaria brassicicola. Bioorg. Med. Chem. in press.
445. Zhang, Q.-F., Fu, Y.-J., Huang, Z.-W., Shangguang, X.-C., and Guo, Y.-X. (2013). Aqueous stability of astilbin: effects of pH, temperature, and solvent. J. Agric. Food Chem. 61: 12085–12091.
446. Nishizaki, Y. et al. (2013). p-Hydroxybenzoyl-glucose is a zwitter donor for the biosynthesis of 7-polyacylated anthocyanin in delphinium. Plant Cell 25: 4150–4165.
447. Pĕnčík, A. et al. (2013). Regulation of auxin homeostasis and gradients in arabidopsis roots through the formation of the indole-3-acetic acid catabolite 2-oxindole-3-acetic acid. Plant Cell 25: 3858–3870.
448. Onoyovwe, A. et al. (2013). Morphine biosynthesis in opium poppy involves two cell types: sieve elements and laticifers. Plant Cell 25: 4110–4122.
449. Keereetaweep, J., Blancaflor, E.B., Hornung, E., Feussner, I., and Chapman, K.D. (2013). Ethanolamide oxylipins of linolenic acid can negatively regulate Arabidopsis seedling development. Plant Cell 25: 3824–3840.
450. Martellini, F. et al. Can adaptation to metalliferous environments affect plant response to biotic stress? Insight from Silene paradoxa L. and phytoalexins. Environ. Exp. Bot. in press.
451. Qian, Q., Huang, L., Yi, R., Wang, S., and Ding, Y. Enhanced resistance to blast fungus in rice (Oryza sativa L.) by expressing the ribosome-inactivating protein alpha-momorcharin. Plant Sci. in press.
452. Li, T. et al. Jumonji C protein JMJ705-mediated removal of histone H3 lysine 27 trimethylation is involved in defense-related gene activation in rice. Plant Cell in press.
2013年12月2日月曜日
化学生態学実験 III，研究室セミナー，輪読
しばらくブログ更新をさぼってしまいました．長谷川担当の化学生態学実験 III は 11/22 で全日程を終了しました．GC/MS で籾殻抽出物中のモミラクトン A を検出する実験が一回目はどの班でも検出できないという問題がありましたが，濃度を上げたところ，全ての班が検出することができました．それ以外は特に大きなトラブルもなく，順調に終了しました．TA の大学院生の堀江君と濱名君のおかげです．レポート提出〆切は今週末 12/6 です．
先々週の研究室セミナーでの文献紹介の担当は四年生の渡辺さんで，紹介した論文は Zhang, C., Ma, X. & Du, Y. Synthesis of Neu5Ac-α-C-galactopyranosyl-functionalized magnetic nanoparticles via click chemistry. Tetrahedron 69, 7300-7307 (2013) でした．クリックケミストリーによって N-アセチルノイラミン酸を結合させた磁性ナノ粒子の調製についての論文です．先週の担当は化学生態学研究室四年生の藤原さんで，紹介した論文は Sugawara, K. et al. The alteration of plant morphology by small peptides released from the proteolytic processing of the bacterial peptide TENGU. Plant Physiol. 162, 2005-2014 (2013) でした．天狗巣病の原因ペプチド TENGU の植物体内でのタンパク質分解酵素によるプロセシングについての論文です．
先々週，先週の輪読では下記の論文を取り上げました．
433. Chooi, Y.-H., Hong, Y.J., Cacho, R.A., Tantillo, D.J., and Tang, Y. (2013). A cytochrome P450 serves as an unexpected terpene cyclase during fungal meroterpenoid biosynthesis. J. Am. Chem. Soc. 135: 16805–16808.
434. Cai, F. et al. (2013). Harzianolide, a novel plant growth regulator and systemic resistance elicitor from Trichoderma harzianum. Plant Physiol. Biochem. 73: 106–113.
435. Pérez-Trujillo, M., Monteagudo, E., and Parella, T. (2013). 13C NMR spectroscopy for the differentiation of enantiomers using chiral solvating agents. Anal. Chem. 85: 10887–10894.
436. Bandurska, H., and Cieślak, M. (2013). The interactive effect of water deficit and UV-B radiation on salicylic acid accumulation in barley roots and leaves. Environ. Exp. Bot. 94: 9–18.
437. Rodríguez, A. et al. Terpene downregulation triggers defense responses in transgenic oranges leading to resistance against fungal pathogens. Plant Physiol. in press.
438. Nuruzzaman, M. et al. Comparative transcriptome profiles of the WRKY gene family under control, hormone-treated, and drought conditions in near-isogenic rice lines reveal differential, tissue specific gene activation. J. Plant Physiol. in press.
439. Kurepa, J. et al. Direct isolation of flavonoids from plants using ultra-small anatase TiO2 nanoparticles. Plant J. in press.
440. Goufo, P. et al. (2014). Rice (Oryza sativa L.) phenolic compounds under elevated carbon dioxide (CO2) concentration. Environ. Exp. Bot. 99: 28–37.
441. Kolev, J.N., O’Dwyer, K.M., Jordan, C.T., and Fasan, R. Discovery of potent parthenolide-based antileukemic agents enabled by late-stage P450-mediated C–H functionalization. ACS Chem. Biol. in press.
442. Pollier, J. et al. The protein quality control system manages plant defence compound synthesis. Nature in press.
先々週の研究室セミナーでの文献紹介の担当は四年生の渡辺さんで，紹介した論文は Zhang, C., Ma, X. & Du, Y. Synthesis of Neu5Ac-α-C-galactopyranosyl-functionalized magnetic nanoparticles via click chemistry. Tetrahedron 69, 7300-7307 (2013) でした．クリックケミストリーによって N-アセチルノイラミン酸を結合させた磁性ナノ粒子の調製についての論文です．先週の担当は化学生態学研究室四年生の藤原さんで，紹介した論文は Sugawara, K. et al. The alteration of plant morphology by small peptides released from the proteolytic processing of the bacterial peptide TENGU. Plant Physiol. 162, 2005-2014 (2013) でした．天狗巣病の原因ペプチド TENGU の植物体内でのタンパク質分解酵素によるプロセシングについての論文です．
先々週，先週の輪読では下記の論文を取り上げました．
433. Chooi, Y.-H., Hong, Y.J., Cacho, R.A., Tantillo, D.J., and Tang, Y. (2013). A cytochrome P450 serves as an unexpected terpene cyclase during fungal meroterpenoid biosynthesis. J. Am. Chem. Soc. 135: 16805–16808.
434. Cai, F. et al. (2013). Harzianolide, a novel plant growth regulator and systemic resistance elicitor from Trichoderma harzianum. Plant Physiol. Biochem. 73: 106–113.
435. Pérez-Trujillo, M., Monteagudo, E., and Parella, T. (2013). 13C NMR spectroscopy for the differentiation of enantiomers using chiral solvating agents. Anal. Chem. 85: 10887–10894.
436. Bandurska, H., and Cieślak, M. (2013). The interactive effect of water deficit and UV-B radiation on salicylic acid accumulation in barley roots and leaves. Environ. Exp. Bot. 94: 9–18.
437. Rodríguez, A. et al. Terpene downregulation triggers defense responses in transgenic oranges leading to resistance against fungal pathogens. Plant Physiol. in press.
438. Nuruzzaman, M. et al. Comparative transcriptome profiles of the WRKY gene family under control, hormone-treated, and drought conditions in near-isogenic rice lines reveal differential, tissue specific gene activation. J. Plant Physiol. in press.
439. Kurepa, J. et al. Direct isolation of flavonoids from plants using ultra-small anatase TiO2 nanoparticles. Plant J. in press.
440. Goufo, P. et al. (2014). Rice (Oryza sativa L.) phenolic compounds under elevated carbon dioxide (CO2) concentration. Environ. Exp. Bot. 99: 28–37.
441. Kolev, J.N., O’Dwyer, K.M., Jordan, C.T., and Fasan, R. Discovery of potent parthenolide-based antileukemic agents enabled by late-stage P450-mediated C–H functionalization. ACS Chem. Biol. in press.
442. Pollier, J. et al. The protein quality control system manages plant defence compound synthesis. Nature in press.
2013年11月16日土曜日
化学生態学実験 III，研究室セミナー，今週の輪読
今週の月曜日から長谷川が担当する資源生物科学科三年生向けの学生実験「化学生態学実験 III」が始まりました．今年の受講者は 27 名です．今日で前半を終了しましたが，ここまではまだ結果が何も出ていない状態なので，うまくいっているかどうかははっきりしませんが，見たところまあまあ順調に進んでいるようです．
水曜日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鈴木君で，紹介した論文は Sairanen, I. et al. Soluble carbohydrates regulate auxin biosynthesis via PIF proteins in Arabidopsis. Plant Cell 24, 4907-4916 (2012) でした．糖によってオーキシンの生合成が制御され，その制御には PIF タンパク質が関わっ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．
428. Ma, Y., Zhao, Y., Walker, R.K., and Berkowitz, G.A. (2013). Molecular steps in the immune signaling pathway evoked by plant elicitor peptides: Ca2+-dependent protein kinases, nitric oxide, and reactive oxygen species are downstream from the early Ca2+ signal. Plant Physiol. 163: 1459–1471.
429. Abe, H. et al. (2013). Disarming the jasmonate-dependent plant defense makes nonhost Arabidopsis plants accessible to the American serpentine leafminer. Plant Physiol. 163: 1242–1253.
430. 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.
431. Hatmi, S. et al. Osmotic stress-induced polyamine oxidation mediates defence responses and reduces stress-enhanced grapevine susceptibility to Botrytis cinerea. J. Exp. Bot. in press.
432. Friedman, M. (2013). Rice brans, rice bran oils, and rice hulls: composition, food and industrial uses, and bioactivities in humans, animals, and cells. J. Agric. Food Chem. 61: 10626–10641.
水曜日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鈴木君で，紹介した論文は Sairanen, I. et al. Soluble carbohydrates regulate auxin biosynthesis via PIF proteins in Arabidopsis. Plant Cell 24, 4907-4916 (2012) でした．糖によってオーキシンの生合成が制御され，その制御には PIF タンパク質が関わっ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．
428. Ma, Y., Zhao, Y., Walker, R.K., and Berkowitz, G.A. (2013). Molecular steps in the immune signaling pathway evoked by plant elicitor peptides: Ca2+-dependent protein kinases, nitric oxide, and reactive oxygen species are downstream from the early Ca2+ signal. Plant Physiol. 163: 1459–1471.
429. Abe, H. et al. (2013). Disarming the jasmonate-dependent plant defense makes nonhost Arabidopsis plants accessible to the American serpentine leafminer. Plant Physiol. 163: 1242–1253.
430. 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.
431. Hatmi, S. et al. Osmotic stress-induced polyamine oxidation mediates defence responses and reduces stress-enhanced grapevine susceptibility to Botrytis cinerea. J. Exp. Bot. in press.
432. Friedman, M. (2013). Rice brans, rice bran oils, and rice hulls: composition, food and industrial uses, and bioactivities in humans, animals, and cells. J. Agric. Food Chem. 61: 10626–10641.
2013年11月9日土曜日
送風乾燥機修理 & 今週の輪読
研究室では長谷川が学生の頃から 20 年以上使っているアドバンテックの送風乾燥機があるのですが，しばらく前からファンがイオンを出すようになっていて，9 月末には時折ファンが停止するような状態になってしまいました．古い機器なので，もう修理は無理かもしれないと半分諦めながらメーカーに問い合わせてみましたところ，ファンモーターの故障ならまだ修理可能ということで，引き取り修理をお願いしていました．その乾燥機が木曜日に一ヶ月ぶりに戻ってきました．戻ってきた乾燥機はファンの音が非常に静かになっていて，周りがうるさい実験室では動いているのが分からないぐらいになりました．ここのところ，製氷機，冷却水循環装置，送風乾燥機と立て続けに研究室のベテラン機器（いずれも 20 年以上使用）が不調に陥っていますが，それぞれ何とか使い続けることができています．
今週の輪読では下記の論文を取り上げました．
424. Thi, D.T., Shimatani, Z., Kawano, Y., Terada, R., and Shimamoto, K. Gene editing a constitutively active OsRac1 by homologous recombination-based gene targeting induces immune responses in rice. Plant Cell Physiol. in press.
425. Rühmann, S. et al. (2013). Induction of stilbene phytoalexins in grapevine (Vitis vinifera) and transgenic stilbene synthase-apple plants (Malus domestica) by a culture filtrate of Aureobasidium pullulans. Plant Physiol. Biochem. 72: 62–71.
426. Agati, G. et al. (2013). Functional roles of flavonoids in photoprotection: New evidence, lessons from the past. Plant Physiol. Biochem. 72: 35–45.
427. Zhang, X.- et al. The effect of the skeleton structure of flavanone and flavonoid on interaction with transferrin. Bioorg. Med. Chem. Lett. in press.
今週の輪読では下記の論文を取り上げました．
424. Thi, D.T., Shimatani, Z., Kawano, Y., Terada, R., and Shimamoto, K. Gene editing a constitutively active OsRac1 by homologous recombination-based gene targeting induces immune responses in rice. Plant Cell Physiol. in press.
425. Rühmann, S. et al. (2013). Induction of stilbene phytoalexins in grapevine (Vitis vinifera) and transgenic stilbene synthase-apple plants (Malus domestica) by a culture filtrate of Aureobasidium pullulans. Plant Physiol. Biochem. 72: 62–71.
426. Agati, G. et al. (2013). Functional roles of flavonoids in photoprotection: New evidence, lessons from the past. Plant Physiol. Biochem. 72: 35–45.
427. Zhang, X.- et al. The effect of the skeleton structure of flavanone and flavonoid on interaction with transferrin. Bioorg. Med. Chem. Lett. in press.
2013年11月7日木曜日
研究室セミナー
本日の研究室セミナーでの文献紹介の担当は四年生の五十嵐さんで，紹介した論文は Nishimura, T. et al. Xanthouroleuconaphin: a yellowish pigment from the aphid Uroleucon nigrotuberculatum and its total synthesis. Tetrahedron 69, 1808-1814 (2013) でした．セイタカアワダチソウヒゲナガアブラムシの黄色色素の単離とその全合成についての論文です．
2013年11月2日土曜日
研究室セミナー & 今週の輪読
水曜日の研究室セミナーでの文献紹介の担当は修士一年の濱名君で，紹介した論文は Lang, M. et al. Mutations in the neverland gene turned Drosophila pachea into an obligate specialist species. Science 337, 1658-1661 (2012) でした．パキアショウジョウバエが特定のサボテンしか餌にできなくなった原因は脱皮ホルモンであるエクジソン生合成に関わる酵素遺伝子の変異であった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．
419. Takeuchi, H., Kato, H., and Kurahashi, T. (2013). 2,4,6-Trichloroanisole is a potent suppressor of olfactory signal transduction. Proc. Natl. Acad. Sci. USA 110: 16235–16240.
420. Atwell, B.J., Han, W., and Scafaro, A.P. Could abiotic stress tolerance in wild relatives of rice be used to improve Oryza sativa? Plant Sci. in press.
421. Kain, P. et al. (2013). Odour receptors and neurons for DEET and new insect repellents. Nature 502: 507–512.
422. Barbieri, R.F., Lester, P.J., Miller, A.S., and Ryan, K.G. (2013). A neurotoxic pesticide changes the outcome of aggressive interactions between native and invasive ants. Proc. R. Soc. B 280: 20132157.
423. Höll, J. et al. The R2R3-MYB transcription factors MYB14 and MYB15 regulate stilbene biosynthesis in Vitis vinifera. Plant Cell in press.
今週の輪読では下記の論文を取り上げました．
419. Takeuchi, H., Kato, H., and Kurahashi, T. (2013). 2,4,6-Trichloroanisole is a potent suppressor of olfactory signal transduction. Proc. Natl. Acad. Sci. USA 110: 16235–16240.
420. Atwell, B.J., Han, W., and Scafaro, A.P. Could abiotic stress tolerance in wild relatives of rice be used to improve Oryza sativa? Plant Sci. in press.
421. Kain, P. et al. (2013). Odour receptors and neurons for DEET and new insect repellents. Nature 502: 507–512.
422. Barbieri, R.F., Lester, P.J., Miller, A.S., and Ryan, K.G. (2013). A neurotoxic pesticide changes the outcome of aggressive interactions between native and invasive ants. Proc. R. Soc. B 280: 20132157.
423. Höll, J. et al. The R2R3-MYB transcription factors MYB14 and MYB15 regulate stilbene biosynthesis in Vitis vinifera. Plant Cell in press.
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