Arabidopsis WRKY55 Transcription Factor Enhances Soft Rot Disease Resistance with ORA59.

IF 1.8 3区 农林科学 Q2 PLANT SCIENCES Plant Pathology Journal Pub Date : 2024-10-01 DOI:10.5423/PPJ.OA.08.2024.0126
Ji Eun Kang, Hyunsun Kim, Kyungyoung Song, Changhyun Choi, Yun Ju Kim, Duk-Ju Hwang, Eui-Hwan Chung
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Abstract

Pectobacterium is a major bacterial causal agent leading to soft rot disease in host plants. With the Arabidopsis-Pectobacterium pathosystem, we investigated the function of an Arabidopsis thaliana WRKY55 during defense responses to Pectobacterium carotovorum ssp. carotovorum (Pcc). Pcc-infection specifically induced WRKY55 gene expression. The overexpression of WRKY55 was resistant to the Pcc infection, while wrky55 knockout plants compromised the defense responses against Pcc. WRKY55 expression was mediated via Arabidopsis COI1-dependent signaling pathway showing that WRKY55 can contribute to the gene expression of jasmonic acid-mediated defense marker genes such as PDF1.2 and LOX2. WRKY55 physically interacts with Arabidopsis ORA59 facilitating the expression of PDF1.2</i. Our results suggest that WRKY55 can function as a positive regulator for resistance against Pcc in Arabidopsis.

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拟南芥 WRKY55 转录因子通过 ORA59 增强软腐病抗性
果胶杆菌是导致寄主植物软腐病的主要细菌病原。通过拟南芥-果胶杆菌病理系统,我们研究了拟南芥 WRKY55 在果胶杆菌(Pcc)防御反应过程中的功能。Pcc 感染能特异性诱导 WRKY55 基因的表达。过表达 WRKY55 的植株能抵抗 Pcc 感染,而 WRKY55 基因敲除植株则会影响对 Pcc 的防御反应。WRKY55 的表达是通过拟南芥 COI1 依赖性信号通路介导的,这表明 WRKY55 能促进茉莉酸介导的防御标记基因(如 PDF1.2 和 LOX2)的基因表达。WRKY55 与拟南芥 ORA59 发生物理相互作用,促进了 PDF1.2</i 的表达。我们的研究结果表明,WRKY55 可作为拟南芥抗 Pcc 的正调控因子。
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来源期刊
Plant Pathology Journal
Plant Pathology Journal 生物-植物科学
CiteScore
4.90
自引率
4.30%
发文量
71
审稿时长
12 months
期刊介绍: Information not localized
期刊最新文献
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