文献类型：期刊文献

英文题名：Genome-wide analysis of Eucalyptus grandis WRKY genes family and their expression profiling in response to hormone and abiotic stress treatment

作者：Fan, Chunjie[1,2] Yao, Hairong[1,3] Qiu, Zhenfei[1,2] Ma, Haibin[1] Zeng, Bingshan[1]

第一作者：范春节

通信作者：Zeng, BS[1]

机构：[1]Chinese Acad Forestry, Key Lab State Forestry Adm Trop Forest Res, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[3]Hainan Univ, Coll Environm & Plant Protect, Haikou 570208, Hainan, Peoples R China

年份：2018

卷号：678

起止页码：38-48

外文期刊名：GENE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000447483000006)】；

基金：We'd like to thank Dr. Zehong Ding for his critical comments on this manuscript. This research was supported by the National Natural Science Foundation of China (Grant no. 31400554) and the National High-tech Research and Development Program of China (Grant no. 2013AA102705).

语种：英文

外文关键词：Eucalyptus grandis; WRKY gene family; Expression pattern; Abiotic stress; Plant hormone

摘要：The WRKY transcription factors, a large family of proteins in plants, are involved in multiple developmental and biological processes including response to phytohormones and abiotic stress. However, little information is available regarding the WRKY family in Eucalyptus, which has been the most widely planted hardwood trees in tropical and subtropical areas. In this study, a total of 79 WRKY genes (named as EgrWRKY1-79) were identified from the Eucalyptus grandis genome and classified into three main groups according to the phylogenetic analysis, which was further supported by their gene structure and conserved motifs. Of which, 28 EgrWRKYs were involved in tandem duplication but none for segmental duplication, indicating that tandem duplication was the main cause for the expansion of WRKY gene family in E. grandis. Subsequently, expression profiles of EgrWRKY genes in eight different tissues and in response to treatments of three hormones (SA, JA, and BR) and two abiotic stresses (salt and cold) were analyzed. The results revealed that the EgrWRKY genes had differential expression in their transcript abundance and they were differentially expressed in response to plant hormones and salt and cold stresses, suggesting their contributions to plant developmental processes as well as abiotic stresses with the involvement of hormone signaling transduction. Taken together, these findings will increase our understanding of EgrWRKY gene family involved in abiotic stresses and hormone signaling transduction, and also will provide some stress-responsive candidate EgrWRKY genes for further characterization of their functions in Eucalyptus.