Zhao Yuanling, Chang Xin, Qi Dongyue, Dong Lidong, Wang Guangjin, Fan Sujie, Jiang Liangyu, Cheng Qun, Chen Xi, Han Dan, Xu Pengfei, Zhang Shuzhen
Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural UniversityHarbin, China; Biotechnology Research Institute, Heilongjiang Academy of Agricultural SciencesHarbin, China.
Key Laboratory of Soybean Biology of Chinese Education Ministry, Soybean Research Institute, Northeast Agricultural University Harbin, China.
Front Plant Sci. 2017 Mar 7;8:299. doi: 10.3389/fpls.2017.00299. eCollection 2017.
Phytophthora root and stem rot of soybean caused by the oomycete , is a destructive disease worldwide. Ethylene response factors (ERFs) play important roles in regulating plant biotic and abiotic stress tolerance. In this study, a new ERF gene, , was isolated from the highly resistant soybean 'Suinong 10.' Sequence analysis suggested that the protein encoded by contained a conserved AP2/ERF domain of 58 amino acid and belonged to the B-4 subgroup of the ERF subfamily. Expression of was significantly induced by , ethylene, and methyl jasmonate. GmERF113 protein localized to the nucleus when transiently expressed in protoplasts, could bind to the GCC-box, and acted as a transcription activator. In addition, a region of the full-length GmERF113, GmERF113-II, interacted with a basic helix-loop-helix transcription factor (GmbHLH) in yeast cells. Full-length GmERF113 also interacted with GmbHLH -overexpressing transgenic plants in susceptible cultivar 'Dongnong 50' soybean exhibited increased resistance to and positively regulated the expression of the pathogenesis-related genes, and . These results indicate that may play a crucial role in the defense of soybean against infection.
由卵菌引起的大豆疫霉根腐病是一种在全球范围内具有破坏性的病害。乙烯响应因子(ERFs)在调节植物对生物和非生物胁迫的耐受性方面发挥着重要作用。在本研究中,从高抗大豆品种‘绥农10’中分离出一个新的ERF基因, 。序列分析表明, 编码的蛋白质含有一个由58个氨基酸组成的保守AP2/ERF结构域,属于ERF亚家族的B-4亚组。 的表达受到 、乙烯和茉莉酸甲酯的显著诱导。GmERF113蛋白在 原生质体中瞬时表达时定位于细胞核,能够与GCC-box结合,并作为转录激活因子发挥作用。此外,全长GmERF113的一个区域GmERF113-II在酵母细胞中与一个碱性螺旋-环-螺旋转录因子(GmbHLH)相互作用。全长GmERF113还与在感病品种‘东农50’大豆中过表达GmbHLH的转基因植物相互作用,该品种对 表现出增强的抗性,并正向调节病程相关基因 和 的表达。这些结果表明, 可能在大豆抵御 侵染的防御过程中发挥关键作用。