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	Ectopic expression of the cotton non-symbiotic hemoglobin gene ghhb1 triggers defense responses and increases disease tolerance in arabidopsis
	Qu, Zhan-Liang; Zhong, Nai-Qin; Wang, Hai-Yun; Chen, An-Ping; Jian, Gui-Liang; Xia, Gui-Xian
刊名	Plant and cell physiology
	2006-08-01
卷号	47期号:8页码:1058-1068
关键词	Non-symbiotic hemoglobin Nitric oxide Plant hormone Hypersensitive response Verticillium dahliae
ISSN号	0032-0781
DOI	10.1093/pcp/pcj076
通讯作者	Xia, gui-xian(guixianx@yahoo.com)
英文摘要	Plant non-symbiotic hemoglobins (nshbs) play important roles in a variety of cellular processes. previous evidence from this laboratory indicates that the expression of a class 1 nshb gene (ghhb1) from cotton is induced in cotton roots challenged with the verticillium wilt fungus. the present study examined further the expression patterns of the ghhb1 gene in cotton plants and characterized its in vivo function through ectopic overexpression of the gene in arahidopsis thaliana. expression of ghhb1 in cotton plants was induced by exogenously applied salicylic acid, methyl jasmonic acid, ethylene, hydrogen peroxide (h(2)o(2)) and nitric oxide (no). ectopic overproduction of ghhb1 in arabidopsis led to constitutive expression of the defense genes pr-1 and pdf1.2, and conferred enhanced disease resistance to pseudomonas syringae and tolerance to v. dahliae. ghhb1-transgenic arabidopsis seedlings were more tolerant to exogenous no and contained lower levels of cellular no than the wild-type control. moreover, transgenic plants with relatively high levels of expression of the ghhb1 gene developed spontaneous hypersensitive lesions on the leaves in the absence of pathogen inoculation. our results indicate that ghhb1 proteins play a role in the defense responses against pathogen invasions, possibly by modulating the no level and the ratio of h(2)o(2)/no in the defense process.
WOS关键词	PLANT-PATHOGEN INTERACTIONS ; NITRIC-OXIDE FUNCTIONS ; ALFALFA ROOT CULTURES ; PROGRAMMED CELL-DEATH ; REACTIVE OXYGEN ; HYPOXIC STRESS ; TRANSCRIPTION FACTOR ; RESISTANCE RESPONSE ; CLASS-1 HEMOGLOBIN ; LOTUS-JAPONICUS
WOS研究方向	Plant Sciences ; Cell Biology
WOS类目	Plant Sciences ; Cell Biology
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000240328700004
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2378531
专题	中国科学院大学
通讯作者	Xia, Gui-Xian
作者单位	1.Chinese Acad Sci, Inst Microbiol, State Key Lab Plant Genom, Beijing 100080, Peoples R China 2.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100094, Peoples R China 3.Hebei Univ, Coll Life Sci, Baoding 071002, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Qu, Zhan-Liang,Zhong, Nai-Qin,Wang, Hai-Yun,et al. Ectopic expression of the cotton non-symbiotic hemoglobin gene ghhb1 triggers defense responses and increases disease tolerance in arabidopsis[J]. Plant and cell physiology,2006,47(8):1058-1068.
APA	Qu, Zhan-Liang,Zhong, Nai-Qin,Wang, Hai-Yun,Chen, An-Ping,Jian, Gui-Liang,&Xia, Gui-Xian.(2006).Ectopic expression of the cotton non-symbiotic hemoglobin gene ghhb1 triggers defense responses and increases disease tolerance in arabidopsis.Plant and cell physiology,47(8),1058-1068.
MLA	Qu, Zhan-Liang,et al."Ectopic expression of the cotton non-symbiotic hemoglobin gene ghhb1 triggers defense responses and increases disease tolerance in arabidopsis".Plant and cell physiology 47.8(2006):1058-1068.

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