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GmTOC1b negatively regulates resistance to Soybean mosaic virus

文献类型： 外文期刊

作者： Zhang, Yuhang 1 ; Du, Haiping 1 ; Zhao, Tiantian 2 ; Liao, Chunmei 1 ; Feng, Tu 3 ; Qin, Jun 2 ; Liu, Baohui 1 ; Kong, Fanjiang 1 ; Che, Zhijun 4 ; Chen, Liyu 1 ;

作者机构： 1.Guangzhou Univ, Guangzhou Key Lab Crop Gene Editing, Sch Life Sci, Guangdong Key Lab Plant Adaptat & Mol Design,Innov, Guangzhou 510006, Guangdong, Peoples R China

2.Hebei Acad Agr & Forestry Sci, Natl Soybean Improvement Ctr Shijiazhuang Sub Ctr, Hebei Lab Crop Genet & Breeding, Minist Agr & Rural Affairs,Inst Cereal & Oil Crops, Shijiazhuang 050035, Hebei, Peoples R China

3.Guizhou Univ Engn Sci, Sch Ecol Engn, Bijie 551700, Guizhou, Peoples R China

4.Ningxia Univ, Sch Agr, Yinchuan 750021, Ningxia, Peoples R China

5.Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050024, Hebei, Peoples R China

关键词： GmTOC1b; GmWRKY40; Soybean; Soybean mosaic virus

期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）

ISSN： 2095-5421

年卷期： 2023 年 11 卷 6 期

页码：

收录情况： SCI

摘要： Soybean (Glycine max) is a major oil and feed crop worldwide. Soybean mosaic virus (SMV) is a globally occurring disease that severely reduces the yield and quality of soybean. Here, we characterized the role of the clock gene TIMING OF CAB EXPRESSION 1b (GmTOC1b) in the resistance of soybean to SMV. Homozygous Gmtoc1b mutants exhibited increased tolerance to SMV strain SC3 due to the activation of programmed cell death triggered by a hypersensitive response. Transcriptome deep sequencing and RT-qPCR analysis suggested that GmTOC1b likely regulates the expression of target genes involved in the salicylic acid (SA) signaling pathway. GmTOC1b binds to the promoter of GmWRKY40, which encodes a protein that activates the expression of SA-mediated defense-related genes. Moreover, we revealed that the GmTOC1bH1 haplotype, which confers increased tolerance to SMV, was artificially selected in improved cultivars from the Northern and Huang-Huai regions of China. Our results therefore identify a previously unknown SMV resistance component that could be deployed in the molecular breeding of soybean to enhance SMV resistance. (c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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