Genetic Diversity Analysis of Non-Heading Chinese Cabbage of Resistance to Clubroot Disease Based on SNP Molecular Markers
文献类型： 外文期刊
作者： Miao, Liming 1 ; Xi, Dandan 1 ; Li, Xiaofeng 1 ; Zhang, Changwei 2 ; Gao, Lu 1 ; Li, Ying 2 ; Zhu, Yuying 1 ; Zhu, Hongfang 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Hort Res Inst, Shanghai Key Lab Hort Protected Hort Technol, Zhuanghang Comprehens Expt Stn, Shanghai 201403, Peoples R China
2.Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China
关键词： non-heading Chinese cabbage; clubroot disease; SNPs; genetic diversity; selective sweep
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 1 期
页码：
收录情况： SCI
摘要： Clubroot disease is a kind of soil-borne disease that seriously infects Brassica species. In this study, we collected 121 varieties of non-heading Chinese cabbages. In order to better understand the genetic variation and to screen suitable clubroot disease-resistant parental material, we re-sequenced them to examine the population genetic structure, population genetic diversity, population differentiation index, and selective sweep based on SNPs. The mapping rate with the reference genome was high, and data quality analysis revealed that the sequencing quality was good. The annotated data indicated that intronic and intergenic areas held the majority of SNPs and indels. Four subgroups of 121 non-heading Chinese cabbages were identified using principal component analysis, phylogenetic tree, and genetic structure analysis. An examination of genetic diversity revealed that while selfing may happen in subgroups C and D, heterozygosity may exist in subgroups A and B. In subgroup B, self-fertilization is not possible. There was a moderate degree of genetic differentiation between subgroups B and C (Fst = 0.0744347). For genes in certain sweep regions, we also ran GO enrichment and KEGG enrichment analysis. Two disease resistance-related genes, BraA01g042910.3.5C and BraA06g019360.3.5C, were examined. These findings will serve as a theoretical foundation for developing novel, clubroot disease-resistant types of non-heading Chinese cabbages.
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