Identification of a male-specific region (MSR) in Spinacia oleracea

文献类型： 外文期刊

第一作者： She, Hongbing

作者： She, Hongbing;Li, Ying;She, Hongbing;Xu, Zhaosheng;Zhang, Helong;Li, Guoliang;Wu, Jian;Wang, Xiaowu;Liu, Zhiyuan;Qian, Wei

作者机构：

关键词： Spinacia oleracea; Dioecy; MSR (male-specific region); Sex chromosome

期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：3.032； ）

ISSN： 2095-9885

年卷期： 2021 年 7 卷 4 期

页码：

收录情况： SCI

摘要： Dioecy, the presence of male and female individual, has evolved independently from hermaphroditism in multiple flowering plant lineages. Spinach, an important leafy vegetable crop worldwide, is a dioecious species with an XY sex-determination system. Although some markers that are fully linked to male-determination locus were identified, the male-specific region (MSR) remained unclear. In this research, five male individuals and five female lines were resequenced to identify the male-specific region. We identified a region (similar to 21 kb) on chromosome 4 (putative sex chromosome) where the five females had a low reads coverage, while the five males had high coverage. A KASP marker, SponR, developed from a single nucleotide polymorphism (SNP) closely linked to the MSR was co-segregating with the sex determination gene in the population of 958 individuals, suggesting that the MSR might be specifically present in male spinach plants.

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