Fusarium phytotoxin trichothecenes have an elicitor-like activity in Arabidopsis thaliana, but the activity differed significantly among their molecular species

Fusarium phytotoxin trichothecenes have an elicitor-like activity in Arabidopsis thaliana, but the activity differed significantly among their molecular species

フォーマット:

論文

責任表示:

Nishiuchi, Takumi ; Masuda, Daisuke ; Nakashita, Hideo ; Ichimura, Kazuya ; Shinozaki, Kazuo ; Yoshida, Shigeo ; Kimura, Makoto ; Yamaguchi, Isamu ; Yamaguchi, Kazuo

言語:

英語

出版情報:

American Phytopathological Society, 2006-05-01

著者名:

掲載情報:

Molecular Plant-Microbe Interactions

ISSN:

0894-0282

巻:

19

通号:

5

開始ページ:

512

終了ページ:

520

バージョン:

publisher

概要:

金沢大学学際科学実験センター遺伝子研究施設<br />Phytopathogenic fungi such as Fusarium spp. synthesize trichothecene family phytotoxins. Although the type B trichothecene, deoxynivalenol (DON), is thought to be a virulence factor allowing infection of pla … nts by their trichothecene-producing Fusarium spp., little is known about effects of trichothecenes on the defense response in host plants. Therefore, in this article, we investigated these effects of various trichothecenes in Fusarium-susceptible Arabidopsis thaliana. Necrotic lesions were observed in Arabidopsis leaves infiltrated by 1 μM type A trichothecenes such as T-2 toxin. Trichothecene-induced lesions exhibited dead cells, callose deposition, generation of hydrogen peroxide, and accumulation of salicylic acids. Moreover, infiltration by trichothecenes caused rapid and prolonged activation of two mitogen-activated protein kinases and induced expression of both PR-1 and PDF1.2 genes. Thus, type A trichothecenes trigger the cell death by activation of an elicitor-like signaling pathway in Arabidopsis. Although DON did not have such an activity even at 10 μM, translational inhibition by DON was observed at concentrations above 5 μM. These results suggested that DON is capable of inhibiting translation in Arabidopsis cells without induction of the elicitor-like signaling pathway. © 2006 The American Phytopathological Society.. 続きを見る

URL:

http://hdl.handle.net/2297/14524

タイトル・著者・出版者が同じ資料

詳細

主題:	DAS; MAP kinase cascade
受理日:	2006-05-01

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