大学院入試＆今週の輪読

今日は茨城大学大学院農学研究科の大学院入試が実施されました．例年の大学院入試は 8 月上旬にあるのですが，来年度からは従来の 3 専攻から 1 専攻への改組されるため，その影響でこの時期の入試になりました．

今週の輪読では下記の論文を取り上げました．

1021. Luo, D. et al. (2016). Oxidation and cyclization of casbene in the biosynthesis of Euphorbia factors from mature seeds of Euphorbia lathyris L. Proc. Natl. Acad. Sci. USA 113: E5082–E5089.

1022. Liu, M. et al. (2016). Crystal structure analysis and the identification of distinctive functional regions of the protein elicitor MoHrip2. Front. Plant Sci. 7: 1103.

1023. Hutin, M. et al. Ectopic activation of the rice NLR heteropair RGA4/RGA5 confers resistance to bacterial blight and bacterial leaf streak diseases. Plant J. in press.

勝間田駿君の論文が Chemistry & Biodiversity 誌に掲載

修士課程 1 年生の勝間田駿君が筆頭著者でスイス Wiley-VHCA 社の英文学術雑誌 Chemistry & Biodiversity に投稿していた論文が 9/16 にアクセプトされ，9/19 には Wiley Online Library で Accepted Manuscript が公開されました．

Katsumata, S., Hamana, K., Horie, K., Toshima, H., and Hasegawa, M. Identification of sternbin and naringenin as detoxified metabolites from the rice flavanone phytoalexin sakuranetin by Pyricularia oryzae. Chem. Biodiversity in press.

この論文ではイネのフラボノイド系フィトアレキシンであるサクラネチンがイネいもち病菌によってステルンビンとナリンゲニンに代謝されることを明らかにしています．代謝されたステルンビンとナリンゲニンのいもち病菌に対する抗菌活性はサクラネチンよりも低く，いもち病菌はサクラネチンをステルンビンやナリンゲニンに代謝することによって解毒している可能性が考えられます．イネは抗菌活性物質であるフィトアレキシンを作って病原菌の感染拡大を抑えていると考えられていますが，病原菌もフィトアレキシンを解毒することによって植物に対抗しているのかもしれないと我々は推測しています．

この研究は第二著者の修士課程修了生濱名一穂君の修士論文研究を勝間田君が引き継いで卒業論文研究で完成させた結果です．

研究室旅行，研究室セミナー，7/25 〜 9/16 の輪読

しばらくブログ更新をサボってしまいました

9/13 に生物制御化学研究室・化学生態学研究室合同で日帰りの研究室旅行に行ってきました．残念ながら戸嶋先生と何名かの学生が不参加でしたが，
あしかがフラワーパーク，佐野ラーメン工場見学（休憩中で操業していなくて残念），イタリアンバイキングの昼食，ぶどう狩りというバスツアーに参加してきました．バスに乗るときは大雨で先が危ぶまれたのですが，訪問先に着いた時には幸い雨も上がってくれました．

あしかがフラワーパークでは睡蓮が見頃ということでしたが，ポツポツ咲いているだけで，ややフラワー成分は少なめでした．

7/29 の研究室セミナーの文献紹介の担当は 4 年生の西脇さんで下記の論文を紹介しました．
Bundó, M., and Coca, M. (2016). Enhancing blast disease resistance by overexpression of the calcium-dependent protein kinase OsCPK4 in rice. Plant Biotechnol. J. 14: 1357–1367.

8/5 は化学生態学研究室 4 年生の高須さんの担当で下記の論文を紹介しました．
Liu, Z. et al. (2016). Repression of callus initiation by the miRNA-directed interaction of auxin–cytokinin in Arabidopsis thaliana. Plant J. 87: 391–402.

7/25 〜 9/16 の輪読では下記の論文を取り上げました．

990. Chen, X.-L. et al. Peroxisomal fission is induced during appressorium formation and is required for full virulence of the rice blast fungus. Mol. Plant Pathol. in press.

991. Fang, C. et al. (2016). Role of allene oxide cyclase in the regulation of rice phenolic acids synthesis and allelopathic inhibition on barnyardgrass. Plant Growth Regul. 79: 265–273.

992. Sharpee, W. et al. Identification and characterization of suppressors of plant cell death (SPD) genes from Magnaporthe oryzae. Mol. Plant Pathol. in press.

993. Kitaoka, N., Wu, Y., Zi, J., and Peters, R.J. Investigating inducible short-chain alcohol dehydrogenases/reductases clarifies rice oryzalexin biosynthesis. Plant J. in press.

994. Seo, S. et al. (2016). L-Histidine induces resistance in plants to the bacterial pathogen Ralstonia solanacearum partially through the activation of ethylene signaling. Plant Cell Physiol. 57: 1932–1942.

995. Khan, N.U., Liu, M., Yang, X., and Qiu, D. (2016). Fungal elicitor MoHrip2 induces disease resistance in rice leaves, triggering stress-related pathways. PLoS ONE 11: e0158112.

996. Fuentes, P. et al. (2016). A new synthetic biology approach allows transfer of an entire metabolic pathway from a medicinal plant to a biomass crop. eLife 5: e13664.

997. Peng, M. et al. (2016). Evolutionarily distinct BAHD N-acyltransferases are responsible for natural variation of aromatic amine conjugates in rice. Plant Cell 28: 1533–1550.

998. Carere, J. et al. Enzyme-driven metabolomic screening: a proof-of-principle method for discovery of plant defence compounds targeted by pathogens. New Phytol. in press.

999. Machado, R.A.R., McClure, M., Hervé, M.R., Baldwin, I.T., and Erb, M. (2016). Benefits of jasmonate-dependent defenses against vertebrate herbivores in nature. eLife 5: e13720.

1000. Breen, S., Williams, S.J., Winterberg, B., Kobe, B., and Solomon, P.S. Wheat PR-1 proteins are targeted by necrotrophic pathogen effector proteins. Plant J. in press.

1001. Li, X. et al. (2016). The systemic acquired resistance regulator OsNPR1 attenuates growth by repressing auxin signaling and promoting IAA-amido synthase expression. Plant Physiol. 172: 546–558.

1002. Zhang, C. et al. (2016). Suppression of jasmonic acid-mediated defense by viral-inducible microrna319 facilitates virus infection in rice. Mol. Plant 9: 1302–1314.

1003. Casas, M.I. et al. (2016). Identification and characterization of maize salmon silks genes involved in insecticidal maysin biosynthesis. Plant Cell 28: 1297–1309.

1004. Yang, Z. et al. (2016). Metabolome analysis of Oryza sativa (rice) using liquid chromatography-mass spectrometry for characterizing organ specificity of flavonoids with anti-inflammatory and anti-oxidant activity. Chem. Pharm. Bull. 64: 952–956.

1005. De Bruyne, L. et al. (2016). Comparative chemical screening and genetic analysis reveal tentoxin as a new virulence factor in Cochliobolus miyabeanus, the causal agent of brown spot disease on rice. Mol. Plant Pathol. 17: 805–817.

1006. Vaughan, M.M. et al. (2016). Interactive effects of elevated [CO2] and drought on the maize phytochemical defense response against mycotoxigenic Fusarium verticillioides. PLoS ONE 11: e0159270.

1007. Shine, M.B. et al. Cooperative functioning between phenylalanine ammonia lyase and isochorismate synthase activities contributes to salicylic acid biosynthesis in soybean. New Phytol. in press.

1008. Kothari, K.S., Dansana, P.K., Giri, J., and Tyagi, A.K. (2016). Rice stress associated protein 1 (OsSAP1) interacts with aminotransferase (OsAMTR1) and pathogenesis-related 1a protein (OsSCP) and regulates abiotic stress responses. Front. Plant Sci. 7: 1057.

1009. Sakoda, C.P.P. et al. (2016). Sakuranetin reverses vascular peribronchial and lung parenchyma remodeling in a murine model of chronic allergic pulmonary inflammation. Acta Histochem. 118: 615–624.

1010. Kumagai, M. et al. (2016). Rice varieties in archaic East Asia: reduction of its diversity from past to present times. Mol. Biol. Evol. 33: 2496–2505.

1011. Nagano, M. et al. (2016). Plasma membrane microdomains are essential for Rac1-RbohB/H-mediated immunity in rice. Plant Cell 28: 1966–1983.

1012. Smith, J.D., Woldemariam, M., Mescher, M.C., Jander, G., and De Moraes, C.M. (2016). Glucosinolates from host plants influence parasitic plant growth and susceptibility to herbivores. Plant Physiol. 172: 181–197.

1013. Yang, T. et al. (2016). A stilbenoid-specific prenyltransferase utilizes dimethylallyl pyrophosphate from the plastidic terpenoid pathway. Plant Physiol. 171: 2483–2498.

1014. Fang, C. et al. Control of leaf senescence by a MeOH-jasmonates cascade that is epigenetically regulated by OsSRT1 in rice. Mol. Plant in press.

1015. Yao, R. et al. (2016). DWARF14 is a non-canonical hormone receptor for strigolactone. Nature 536: 469–473.

1016. Machado, R.A.R. et al. (2016). Auxin is rapidly induced by herbivory attack and regulates systemic, jasmonate-dependent defenses. Plant Physiol. 172: 521–532.

1017. Otaka, J., Seo, S., and Nishimura, M. (2016). Lutein, a natural carotenoid, induces α-1,3-glucan accumulation on the cell wall surface of fungal plant pathogens. Molecules 21: 980.

1018. Handrick, V. et al. (2016). Biosynthesis of 8-O-methylated benzoxazinoid defense compounds in maize. Plant Cell 28: 1682–1700.

1019. Ray, S. et al. (2016). Analysis of Magnaporthe oryzae genome reveals a fungal effector, which is able to induce resistance response in transgenic rice line containing resistance gene, Pi54. Front. Plant Sci. 7: 1140.

1020. Moselhy, S.S. et al. (2016). Spermidine, a polyamine, confers resistance to rice blast. J. Pestic. Sci. 41: 79–82.