GmMKK4-activated GmMPK6 stimulates GmERF113 to trigger resistance to Phytophthora sojae in soybean
文献类型: 外文期刊
作者: Gao, Hong 1 ; Jiang, Liangyu 1 ; Du, Banghan 1 ; Ning, Bin 1 ; Ding, Xiaodong 1 ; Zhang, Chuanzhong 1 ; Song, Bo 1 ; Liu, Shanshan 1 ; Zhao, Ming 1 ; Zhao, Yuxin 1 ; Rong, Tianyu 1 ; Liu, Dongxue 1 ; Wu, Junjiang 3 ; Xu, Pengfei 1 ; Zhang, Shuzhen 1 ;
作者机构: 1.Northeast Agr Univ, Soybean Res Inst, Key Lab Soybean Biol, Chinese Educ Minist, Harbin 150030, Peoples R China
2.Jilin Agr Univ, Changchun 130118, Peoples R China
3.Soybean Res Inst Heilongjiang Acad Agr Sci, Key Lab Soybean Cultivat, Minist Agr PR China, Harbin 150086, Peoples R China
关键词: soybean; Phytophthora sojae; Mitogen-activated protein kinase cascade (MAPK); Ethylene response factor (ERF) transcription factor
期刊名称:PLANT JOURNAL ( 影响因子:7.091; 五年影响因子:8.028 )
ISSN: 0960-7412
年卷期: 2022 年 111 卷 2 期
页码:
收录情况: SCI
摘要: Phytophthora root and stem rot is a worldwide soybean (Glycine max) disease caused by the soil-borne pathogen Phytophthora sojae. This disease is devastating to soybean production, so improvement of resistance to P. sojae is a major target in soybean breeding. Mitogen-activated protein kinase (MAPK) cascades are important signaling modules that convert environmental stimuli into cellular responses. Compared with extensive studies in Arabidopsis, the molecular mechanism of MAPK cascades in soybean disease resistance is barely elucidated. In this work, we found that the gene expression of mitogen-activated protein kinase 6 (GmMPK6) was potently induced by P. sojae infection in the disease-resistant soybean cultivar 'Suinong 10'. Overexpression of GmMPK6 in soybean resulted in enhanced resistance to P. sojae and silencing of GmMPK6 led to the opposite phenotype. In our attempt to dissect the role of GmMPK6 in soybean resistance to phytophthora disease, we found that MAPK kinase 4 (GmMKK4) and the ERF transcription factor GmERF113 physically interact with GmMPK6, and we determined that GmMKK4 could phosphorylate and activate GmMPK6, which could subsequently phosphorylate GmERF113 upon P. sojae infection, suggesting that P. sojae can stimulate the GmMKK4-GmMPK6-GmERF113 signaling pathway in soybean. Moreover, phosphorylation of GmERF113 by the GmMKK4-GmMPK6 module promoted GmERF113 stability, nuclear localization and transcriptional activity, which significantly enhanced expression of the defense-related genes GmPR1 and GmPR10-1 and hence improved disease resistance of the transgenic soybean seedlings. In all, our data reveal that the GmMKK4-GmMPK6-GmERF113 cascade triggers resistance to P. sojae in soybean and shed light on functions of MAPK kinases in plant disease resistance.
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