Fine mapping of a major co-localized QTL associated with self-incompatibility identified in two F2 populations (broccoli x cauliflower and cauliflower x Chinese kale)
文献类型： 外文期刊
作者： Shen, Yusen 1 ; Wang, Jiansheng 1 ; Sheng, Xiaoguang 1 ; Yu, Huifang 1 ; Shaw, Ranjan K. 1 ; Song, Mengfei 1 ; Cai, Shiyi 1 ; Qiao, Shuting 1 ; Lin, Fan 1 ; Gu, Honghui 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Vegetables, Hangzhou 310021, Peoples R China
2.Zhejiang Agr & Forestry Univ, Coll Hort Sci, Hangzhou 311300, Peoples R China
3.China Agr Univ, Sanya Inst, Yazhou Bay, Sanya 572025, Peoples R China
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：4.2； 五年影响因子：4.9 ）
ISSN： 0040-5752
年卷期： 2024 年 137 卷 12 期
页码：
收录情况： SCI
摘要： Key messageA major QTL responsible for self-incompatibility was stably identified in two F2 populations. Through fine mapping and qRT-PCR analysis, ARK3 emerged as the most promising candidate gene, playing a pivotal role in regulating self-incompatibility in Brassica oleracea.AbstractSelf-incompatibility (SI) is a common phenomenon in Brassica oleracea species, which can maintain genetic diversity but will also limit seed production. Although the S locus has been extensively studied in Arabidopsis and some Brassicaceae crops, map-based cloning of self-incompatibility genes has not been conducted in Brassica oleracea, such as cauliflower and broccoli. In the present study, we identified a major co-localized QTL on chromosome C6 that control SI in two F2 populations derived from intervarietal crosses: broccoli x cauliflower (CL_F2) and cauliflower x Chinese kale (CJ_F2). Subsequently, this QTL was narrowed down to 168.5 Kb through fine mapping using 3,429 F2:3 progenies and 12 available KASP markers. Within this 168.5 Kb region, BolC6t39084H, a homologue of Arabidopsis ARK3, could be a candidate gene that plays a key role in regulating SI in B. oleracea species. This finding can pave the way for an in-depth understanding of the molecular mechanisms underlying SI, and will contribute to the seed production of B. oleracea vegetables.
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