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Genome-Wide Analysis Revealed NBS-LRR Gene Candidates Associated with Bacterial Wilt Resistance in Eggplant (Solanum melongena L.)

文献类型： 外文期刊

作者： Jiang, Yaolan 1 ; Li, Zhiliang 2 ; Li, Wenxiang 3 ; Cheng, Hefen 1 ; Zhao, Wei 2 ; Li, Tao 2 ; Sun, Baojuan 2 ; You, Qian 2 ; Zhou, Dinggang 1 ;

作者机构： 1.Hunan Univ Sci & Technol, Sch Life & Hlth Sci, Hunan Key Lab Econ Crops Genet Improvement & Integ, Xiangtan 411201, Peoples R China

2.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangdong Key Lab New Technol Res Vegetables, Guangzhou 510640, Peoples R China

3.South China Agr Univ, Coll Hort, Guangzhou 510642, Peoples R China

关键词： eggplant; NBS-LRR; disease resistance; genome-wide investigation; bacterial wilt resistance

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 10 期

页码：

收录情况： SCI

摘要： NBS-LRR genes constitute one of the largest resistance gene families in plants, which play key roles in resistance to pathogens. Although the identification and characterization of the NBS-LRR gene family has been extensively reported in various species, a comprehensive analysis in eggplant has not been previously documented. In this study, a total of 269 SmNBS genes were identified in the eggplant genome. Based on domain classification and phylogenetic analysis, SmNBSs were divided into three subgroups 231 CNLs (CC-NBS-LRR), 36 TNLs (TIR-NBS-LRR), and 2 RNLs (RPW8-NBS-LRR). Chromosomal mapping analysis revealed an uneven distribution of SmNBSs in clusters across chromosomes, with a predominant presence on chromosomes 10, 11, and 12. Structural analysis identified eight conserved motifs previously reported in SmNBSs, exhibiting high conservation in both amino acid sequences and their order. Evolutionary analysis demonstrated that tandem duplication events mainly contributed to the expansion of SmNBS. Subsequently, qRT-PCR analysis demonstrated that nine SmNBSs exhibited differential expression patterns in response to R. solanacearum stress, with EGP05874.1 potentially involved in the resistance response. In conclusion, this study provides a comprehensive insight into SmNBSs, which will enhance the research on eggplant disease resistance and facilitate the breeding of new disease-resistant varieties.

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