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Genetic analysis and preliminary mapping by BSA-seq of the CmSR gene regulating the spotted rind trait in melon ( Cucumis melo L.)

文献类型： 外文期刊

作者： Zhang, Weiyan 1 ; Zhang, Huijun 2 ; Zhu, Xiuxiu 2 ; Li, Yahui 2 ; Yuan, Guoliang 3 ; Ma, Jian 3 ;

作者机构： 1.Nantong Coll Sci & Technol, Nantong, Jiangsu, Peoples R China

2.Huaibei Normal Univ, Anhui Prov Watermelon & Melon Biol Breeding Engn R, Sch Life Sci, Huaibei, Anhui, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Biol & Genet Improvement Hort Crops North, Beijing, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr BVRC, Zhanghua St, Beijing 100097, Peoples R China

关键词： Melon; rind color; CmSR; spotted rind; molecular marker.

期刊名称：GENETICS AND MOLECULAR BIOLOGY （ 影响因子：1.7； 五年影响因子：1.7 ）

ISSN： 1415-4757

年卷期： 2024 年 47 卷 3 期

页码：

收录情况： SCI

摘要： Melon (Cucumis melo L.) is an economically important horticultural crop. Spotted rind at maturity is an important appearance quality trait in melons. However, the gene controlling this trait remains unknown. In this study, the inheritance pattern of this trait was explored, and the candidate gene underlying this trait was also successfully identified. Genetic analysis showed that a single dominant gene, Cucumis melo Spotted Rind (CmSR), regulates the spotted rind trait. A preliminary genetic mapping analysis was conducted based on a BSA-seq approach. The CmAPRR2 gene was identified to be linked with the spotted rind trait and was located on the short arm of chromosome 4. It harbored two single-nucleotide mutations (chr4: 687014 G/A and chr4: 687244 C/A) in the non-spotted line 'Yellow 2', which may result in the alternative splicing of the transcript and an amino acid change in the respective protein, from proline to glutamine, respectively. Moreover, marker SNP687014-G/A was developed and co-segregated with the spotted rind trait. Therefore, it is speculated that the CmAPRR2 gene may be involved in the regulation of the spotted rind trait in melon. This study provides a theoretical foundation for further research on the gene regulatory mechanism of the rind color in melon.

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