The MRE11-ATM-SOG1 DNA damage signaling pathway confers rice immunity to Xanthomonas oryzae
文献类型： 外文期刊
作者： Xu, Zhan 1 ; Qu, Mingnan 3 ; Shi, Chuanlin 2 ; Zhang, Hong 2 ; Chen, Wu 2 ; Qian, Hongge 2 ; Zhang, Zhipeng 2 ; Qiu, Jiehua 4 ; Qian, Qian 2 ; Shang, Lianguang 2 ;
作者机构： 1.Guangzhou City Acad Agr Sci, Key Lab Biol Genet & Breeding, Guangzhou 510000, Peoples R China
2.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Guangdong Lab Lingnan Modern Agr, Genome Anal Lab,Minist Agr & Rural Affairs,Shenzhe, Shenzhen 518120, Peoples R China
3.Yangzhou Univ, Coll Agr, Jiangsu Key Lab Crop Genom & Mol Breeding, Yangzhou 225009, Peoples R China
4.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 311400, Peoples R China
5.Yazhouwan Natl Lab, 8 Huanjin Rd, Sanya 572024, Hainan, Peoples R China
关键词： Oryza sativa; Xanthomonas oryzae pv. oryzae; DSBs; phytoalexins; MRE11-ATM-SOG1; TOP6; complex,
期刊名称：PLANT COMMUNICATIONS （ 影响因子：10.5； 五年影响因子：10.5 ）
ISSN： 2590-3462
年卷期： 2024 年 5 卷 4 期
页码：
收录情况： SCI
摘要： Plants are constantly exposed to microbial pathogens in the environment. One branch of innate plant immunity is mediated by cell -membrane -localized receptors, but less is known about associations between DNA damage and plant immune responses. Here, we show that rice ( Oryza sativa) mesophyll cells are prone to DNA double -stranded breaks (DSBs) in response to ZJ173, a strain of Xanthomonas oryzae pv. oryzae ( Xoo ). The DSB signal transducer ataxia telangiectasia mutated (ATM), but not the ATM and Rad3-related branch, confers resistance against Xoo . Mechanistically, the MRE11-ATM module phosphorylates suppressor of gamma response 1 (SOG1), which activates several phenylpropanoid pathway genes and prompts downstream phytoalexin biosynthesis during Xoo infection. Intriguingly, overexpression of the topoisomerase gene TOP6A3 causes a switch from the classic non -homologous end joining (NHEJ) pathway to the alternative NHEJ and homologous recombination pathways at Xoo- induced DSBs. The enhanced ATM signaling of the alternative NHEJ pathway strengthens the SOG1-regulated phenylpropanoid pathway and thereby boosts Xoo -induced phytoalexin biosynthesis in TOP6A3-OE1 overexpression lines. Overall, the MRE11-ATM-SOG1 pathway serves as a prime example of plant-pathogen interactions that occur via host non-specific recognition. The function of TOP6-facilitated ATM signaling in the defense response makes it a promising target for breeding of rice germplasm that exhibits resistance to bacterial blight disease without a growth penalty.
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