Wheat bHLH transcription factor gene, TabHLH060, enhances susceptibility of transgenic Arabidopsis thaliana to Pseudomonas syringae

文献类型： 外文期刊

第一作者： Lin, Ruiming

作者： Lin, Ruiming;Feng, Jing;Qiu, Dewen;Chen, Wanquan;Xu, Shichang

作者机构：

关键词： Basic-helix-loop-helix;Disease resistance;Ethylene;Jasmonic acid;Stripe rust;Triticum aestivum

期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY （ 影响因子：2.747； 五年影响因子：2.388 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Plant bHLH transcription factors have important roles in regulation of developmental processes and responses to environmental stresses, but little is known about their functions in wheat in response to infection by pathogens. A new bHLH-type gene TabHLH060 was cloned from bread wheat (Triticum aestivum) and characterized. TabHLH060 was strongly expressed in wheat leaves and involved in response to infection by the obligate pathogen Puccinia striiformis f. sp. tritici. Treatments with defense-related hormones salicylic acid, methyl jasmonate and particularly ethylene suppressed the transcription level of TabHLH060 to different extents. Susceptibility of TabHLH060-overexpressing Arabidopsis plants to Pseudomonas syringae DC3000 was significantly enhanced. TabHLH060 overexpression resulted in suppression of transcription levels of resistance-related genes PR1, PR2 and PR5 involved in SA signaling pathway, but enhanced genes PDF1.2 and ORA59 involved in the jasmonic acid and ethylene signaling pathways. TabHLH060 is a novel bHLH member of the IVc subgroup, and negatively regulates plant disease resistance through jasmonic acid and ethylene signaling. (C) 2015 Elsevier Ltd. All rights reserved.

分类号： S432.1

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