Requirement of ABA signalling-mediated stomatal closure for resistance of wild tobacco to Alternaria alternata

doi:10.1111/ppa.12181

	Requirement of ABA signalling-mediated stomatal closure for resistance of wild tobacco to Alternaria alternata
	Sun, H.1 ; Hu, X.2; Ma, J.3; Hettenhausen, C.1; Wang, L.1 ; Sun, G.1; Wu, J.1; Wu, J.1; Wu,J (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Econ Plants & Biotechnol,Lanhei Rd 132,Kunming 650201,Peoples R China.; jinsongwu@mail.kib.ac.cn
	2014-10-01
发表期刊	PLANT PATHOLOGY
ISSN	0032-0862
卷号	63 期号:5 页码:1070-1077
摘要	Abscisic acid (ABA) is important for mediating abiotic stress responses and also in plant immunity. Its involvement in the resistance of wild tobacco Nicotiana attenuata to the pathogenic fungus Alternaria alternata, tobacco pathotype, was investigated. After infection, many fungal hyphae were observed to enter leaf tissue through stomata within 24h, and necrotic lesions were formed after 3-6days. Importantly, source-sink transition leaves (leaf 0) were more resistant than all fully expanded ones, and this was correlated with more ABA and ABA-related gene transcripts and lower stomatal conductance in leaf 0 after infection. When supplied with ABA or incubated in the dark for 1day, fully expanded leaves, which accumulated less ABA and showed higher stomatal conductance after infection in comparison to leaf 0, showed increased resistance. Mitogen-activated protein kinase 4-silenced plants, in which ABA-induced stomatal closure responses and resistance to A.alternata were highly impaired, did not show stomatal conductance change after infection, and leaf 0 and fully expanded leaves all developed bigger lesions than in wildtype plants. Thus the ABA signalling pathway mediated by NaMPK4 is required for the resistance of N.attenuata to A.alternata, at least in part through the stomatal closure responses.
关键词	Aba Alternaria Alternata Mitogen-activated Protein Kinase 4 (Nampk4) Nicotiana Attenuata Stomata
学科领域	Agriculture ; Plant Sciences
DOI	10.1111/ppa.12181
收录类别	SCI
语种	英语
WOS记录号	WOS:000342808300012
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/18366
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Wu,J (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Econ Plants & Biotechnol,Lanhei Rd 132,Kunming 650201,Peoples R China.; jinsongwu@mail.kib.ac.cn
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650201, Peoples R China 2.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China 3.Yunnan Acad Tobacco Agr Sci, Kunming 650031, Peoples R China
推荐引用方式 GB/T 7714	Sun, H.,Hu, X.,Ma, J.,et al. Requirement of ABA signalling-mediated stomatal closure for resistance of wild tobacco to Alternaria alternata[J]. PLANT PATHOLOGY,2014,63(5):1070-1077.
APA	Sun, H..,Hu, X..,Ma, J..,Hettenhausen, C..,Wang, L..,...&jinsongwu@mail.kib.ac.cn.(2014).Requirement of ABA signalling-mediated stomatal closure for resistance of wild tobacco to Alternaria alternata.PLANT PATHOLOGY,63(5),1070-1077.
MLA	Sun, H.,et al."Requirement of ABA signalling-mediated stomatal closure for resistance of wild tobacco to Alternaria alternata".PLANT PATHOLOGY 63.5(2014):1070-1077.

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