Ethylene signalling is essential for the resistance of Nicotiana attenuata against Alternaria alternata and phytoalexin scopoletin biosynthesis

doi:10.1111/ppa.12568

	Ethylene signalling is essential for the resistance of Nicotiana attenuata against Alternaria alternata and phytoalexin scopoletin biosynthesis
	Sun, H.1,2 ; Song, N.1; Ma, L.1; Li, J.1,2 ; Ma, L.1; Wu, J.1; Wu, J.1
	2017-02-01
发表期刊	PLANT PATHOLOGY
卷号	66 期号:2 页码:277-284
摘要	The phytohormone ethylene plays an important role in plant defence responses to pathogen attack. When infected by the necrotrophic fungal pathogen Alternaria alternata (tobacco pathotype), which causes severe diseases in Nicotiana species, the wild tobacco plant Nicotiana attenuata accumulates a high amount of the jasmonate (JA)-dependent phytoalexin scopoletin to defend itself against this fungal pathogen. However, it is still not known whether ethylene signalling is also involved in scopoletin biosynthesis and the resistance of N. attenuata. After infection, ethylene biosynthetic genes were highly elicited. Furthermore, plants strongly impaired in ethylene biosynthesis or perception had dramatically decreased scopoletin levels, and these plants became more susceptible to the fungus, while A. alternata- elicited JA levels were increased, indicating that the decreased defence responses were not due to lower JA levels. Thus, it is concluded that after infection, ethylene signalling is activated together with JA signalling in N. attenuata plants and this subsequently regulates scopoletin biosynthesis and plant resistance.
关键词	Aco Ein2 Etr1 Phytoalexin Plant Resistance Scopoletin
DOI	10.1111/ppa.12568
收录类别	SCI
语种	英语
WOS记录号	WOS:000397025200010
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/51016
专题	中国西南野生生物种质资源库
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Res & Dev Wild Plant Resources, Key Lab Econ Plants & Biotechnol, Kunming 650201, Peoples R China 2.Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, H.,Song, N.,Ma, L.,et al. Ethylene signalling is essential for the resistance of Nicotiana attenuata against Alternaria alternata and phytoalexin scopoletin biosynthesis[J]. PLANT PATHOLOGY,2017,66(2):277-284.
APA	Sun, H..,Song, N..,Ma, L..,Li, J..,Ma, L..,...&Wu, J..(2017).Ethylene signalling is essential for the resistance of Nicotiana attenuata against Alternaria alternata and phytoalexin scopoletin biosynthesis.PLANT PATHOLOGY,66(2),277-284.
MLA	Sun, H.,et al."Ethylene signalling is essential for the resistance of Nicotiana attenuata against Alternaria alternata and phytoalexin scopoletin biosynthesis".PLANT PATHOLOGY 66.2(2017):277-284.

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