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Genome-wide association analysis reveals a novel QTL CsPC1 for pericarp color in cucumber

文献类型： 外文期刊

作者： Huang, Hongyu 1 ; Yang, Qinqin 2 ; Zhang, Lidong 1 ; Kong, Weiliang 1 ; Wang, Huizhe 3 ; Wei, Aimin 3 ; Du, Shengli 3 ; Yang, Ruihuan 3 ; Li, Jiawang 1 ; Lin, Tao 2 ; Geng, Xiaolin 2 ; Li, Yuhe 3 ;

作者机构： 1.Tianjin Kernel Cucumber Res Inst, State Key Lab Vegetable Germplasm Innovat, Tianjin 300192, Peoples R China

2.China Agr Univ, Coll Hort, Beijing 100193, Peoples R China

3.Tianjin Acad Agr Sci, Inst Cucumber Res, Tianjin 300192, Peoples R China

关键词： Cucumber; Pericarp color; BSA-seq; GWAS; GATA transcription factor

期刊名称：BMC GENOMICS （ 影响因子：4.547； 五年影响因子：4.931 ）

ISSN： 1471-2164

年卷期： 2022 年 23 卷 1 期

页码：

收录情况： SCI

摘要： Background Cucumber is an important melon crop in the world, with different pericarp colors. However, the candidate genes and the underlying genetic mechanism for such an important trait in cucumber are unknown. In this study, a locus controlling pericarp color was found on chromosome 3 of cucumber genome. Results In this study, the light green inbred line G35 and the dark green inbred line Q51 were crossed to produce one F-2 population. Consequently, we identified a major locus CsPC1 (Pericarp color 1). Next, we mapped the CsPC1 locus to a 94-kb region chromosome 3 which contains 15 genes. Among these genes, Csa3G912920, which encodes a GATA transcription factor, was expressed at a higher level in the pericarp of the NIL-1334 line (with light-green pericarp) than in that of the NIL-1325 line (with dark-green pericarp). This study provides a new allele for the improvement of cucumber pericarp color. Conclusion A major QTL that controls pericarp color in cucumber, CsPC1, was identified in a 94-kb region that harbors the strong candidate gene CsGATA1.

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