Fine mapping and candidate gene analysis of gynoecy trait in chieh-qua (Benincasa hispida Cogn. var. chieh-qua How)
文献类型： 外文期刊
作者： Wang, Min 1 ; Yang, Songguang 1 ; Liu, Wei 1 ; Cao, Zhenqiang 1 ; Chen, Lin 1 ; Liu, Wenrui 1 ; Xie, Dasen 1 ; Yan, Jinqiang 1 ; Jiang, Biao 1 ; Peng, Qingwu 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou, Peoples R China
2.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Res Vegetables, Guangzhou, Peoples R China
关键词： chieh-qua; gynoecy; gene mapping; CqNET4; ethylene synthesis related genes
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 14 卷
页码：
收录情况： SCI
摘要： Gynoecy demonstrates an earlier production of hybrids and a higher yield and improves the efficiency of hybrid seed production. Therefore, the utilization of gynoecy is beneficial for the genetic breeding of chieh-qua. However, little knowledge of gynoecious-related genes in chieh-qua has been reported until now. Here, we used an F-2 population from the cross between the gynoecious line 'A36' and the monoecious line 'SX' for genetic mapping and revealed that chieh-qua gynoecy was regulated by a single recessive gene. We fine-mapped it into a 530-kb region flanked by the markers Indel-3 and KASP145 on Chr.8, which harbors eight candidate genes. One of the candidate genes, Bhi08G000345, encoding networked protein 4 (CqNET4), contained a non-synonymous SNP resulting in the amino acid substitution of isoleucine (ATA; I) to methionine (ATG; M). CqNET4 was prominently expressed in the female flower, and only three genes related to ethylene synthesis were significantly expressed between 'A36' and 'SX.' The results presented here provide support for the CqNET4 as the most likely candidate gene for chieh-qua gynoecy, which differed from the reported gynoecious genes.
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