Genome-wide analysis of WRKY gene family in Cucumis sativus

doi:10.1186/1471-2164-12-471

	Genome-wide analysis of WRKY gene family in Cucumis sativus
	Ling, Jian; Jiang, Weijie; Zhang, Ying; Yu, Hongjun; Mao, Zhenchuan; Gu, Xingfang; Huang, Sanwen; Xie, Bingyan
刊名	BMC GENOMICS
	2011
卷号	12 页码:-
ISSN号	1471-2164
DOI	10.1186/1471-2164-12-471
通讯作者	Ling, Jian
英文摘要	Background: WRKY proteins are a large family of transcriptional regulators in higher plant. They are involved in many biological processes, such as plant development, metabolism, and responses to biotic and abiotic stresses. Prior to the present study, only one full-length cucumber WRKY protein had been reported. The recent publication of the draft genome sequence of cucumber allowed us to conduct a genome-wide search for cucumber WRKY proteins, and to compare these positively identified proteins with their homologs in model plants, such as Arabidopsis.Results: We identified a total of 55 WRKY genes in the cucumber genome. According to structural features of their encoded proteins, the cucumber WRKY (CsWRKY) genes were classified into three groups ( group 1-3). Analysis of expression profiles of CsWRKY genes indicated that 48 WRKY genes display differential expression either in their transcript abundance or in their expression patterns under normal growth conditions, and 23 WRKY genes were differentially expressed in response to at least one abiotic stresses ( cold, drought or salinity). The expression profile of stress-inducible CsWRKY genes were correlated with those of their putative Arabidopsis WRKY ( AtWRKY) orthologs, except for the group 3 WRKY genes. Interestingly, duplicated group 3 AtWRKY genes appear to have been under positive selection pressure during evolution. In contrast, there was no evidence of recent gene duplication or positive selection pressure among CsWRKY group 3 genes, which may have led to the expressional divergence of group 3 orthologs.Conclusions: Fifty-five WRKY genes were identified in cucumber and the structure of their encoded proteins, their expression, and their evolution were examined. Considering that there has been extensive expansion of group 3 WRKY genes in angiosperms, the occurrence of different evolutionary events could explain the functional divergence of these genes.
学科主题	Biotechnology & Applied Microbiology ; Genetics & Heredity ; BIOTECHNOLOGY & APPLIED MICROBIOLOGY ; GENETICS & HEREDITY
语种	英语
出版者	BIOMED CENTRAL LTD
WOS记录号	WOS:000295881400002
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/101137]
专题	蔬菜花卉研究所_植物保护研究室
作者单位	Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Ling, Jian,Jiang, Weijie,Zhang, Ying,et al. Genome-wide analysis of WRKY gene family in Cucumis sativus[J]. BMC GENOMICS,2011,12:-.
APA	Ling, Jian.,Jiang, Weijie.,Zhang, Ying.,Yu, Hongjun.,Mao, Zhenchuan.,...&Xie, Bingyan.(2011).Genome-wide analysis of WRKY gene family in Cucumis sativus.BMC GENOMICS,12,-.
MLA	Ling, Jian,et al."Genome-wide analysis of WRKY gene family in Cucumis sativus".BMC GENOMICS 12(2011):-.