Heterologous expression of OsWRKY6 gene in Arabidopsis activates the expression of defense related genes and enhances resistance to pathogens

被引：61

作者：

Hwang, Seon-Hee ^{[2
]}

Yie, Se Won ^{[2
]}

Hwang, Duk-Ju ^{[1
]}

机构：

[1] Rural Dev Adm, Natl Acad Agr Sci, Biocrop Dev Div, Suwon 440707, South Korea

[2] Kangwon Natl Univ, Sch Biosci & Biotechnol, Dept Mol Biosci, Chunchon 200701, South Korea

来源：

PLANT SCIENCE | 2011年 / 181卷 / 03期

关键词：

WRKY transcription factor; Disease resistance; WRKY TRANSCRIPTION FACTORS; DNA-BINDING PROTEINS; DISEASE RESISTANCE; SIGNALING PATHWAY; RICE; SUPERFAMILY; FAMILY; PROMOTER; ELEMENTS; GROWTH;

D O I：

10.1016/j.plantsci.2011.06.007

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The WRKY proteins are a major family of plant transcription factors implicated in the regulation of plant defense mechanisms against pathogens. OsWRKY6 was isolated based on expression profiling data carried out with samples infected by Xanthomonas oryzae pv. oryzae (Xoo). OsWRKY6 encodes a DNA binding protein that contains one WRKY domain, a nuclear localization signal and C2H2-type zinc finger motif. OsWRKY6 is a member of the group II family of WRKY proteins. Based on the result of yeast one hybrid assay this OsWRKY6 protein binds to the typical W box ((T)TGACC/T). OsWRKY6 functions as a transcriptional activator in yeast. OsWRKY6 enhanced the expression of the reporter gene downstream of OsPR1 promoter, indicating that OsWRKY6 is a transcriptional activator in rice as well. Heterologous expression of OsWRKY6 enhanced disease resistance to pathogen. Defense-related genes were constitutively expressed in Arabidopsis transgenic lines overexpressing OsWRKY6. All together, OsWRKY6 functions as a positive transcriptional regulator of the plant defense response. (C) 2011 Elsevier Ireland Ltd. All rights reserved.

引用

页码：316 / 323

页数：8

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