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Epidermal Patterning Factor 2-like (McEPFL2): A Putative Candidate for the Continuous Ridge (cr) Fruit Skin Locus in Bitter Gourd (Momordica charantia L.)

文献类型： 外文期刊

作者： Yang, Jing 1 ; Weng, Yiqun 2 ; Li, Huihong 1 ; Kong, Qiusheng 1 ; Wang, Weiluan 1 ; Yan, Chenghuan 3 ; Wang, Liping 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Hort & Forestry Sci, Key Lab Hort Plant Biol, Minist Educ, Wuhan 430070, Peoples R China

2.Univ Wisconsin, Hort Dept, USDA ARS, Vegetable Crops Res Unit, Madison, WI 53706 USA

3.Hubei Acad Agr Sci, Inst Econ Crops, Hubei Key Lab Vegetable Germplasm Enhancement & G, Wuhan 430064, Peoples R China

关键词： bitter gourd; skin texture; fruit ridge; EPIDERMAL PATTERNING FACTOR 2-like; marker-assisted breeding

期刊名称：GENES （ 影响因子：4.141； 五年影响因子：4.474 ）

ISSN：

年卷期： 2022 年 13 卷 7 期

页码：

收录情况： SCI

摘要： Bitter gourd (Momordica charantia L.) is an economically important vegetable and medicinal crop in many Asian countries. Limited work has been conducted in understanding the genetic basis of horticulturally important traits in bitter gourd. Bitter gourd is consumed primarily for its young, immature fruit, and fruit appearance plays an important role in market acceptability. One such trait is the ridges on the fruit skin. In the present study, molecular mapping of a locus underlying fruit ridge continuity was conducted. Genetic analysis in segregating populations, derived from the crosses between two inbred lines Y1 with continuous ridges (CR) and Z-1-4 with discontinuous ridges (DCR), suggested that CR was controlled by a single recessive gene (cr). High-throughput genome sequencing of CR and DCR bulks combined with high-resolution genetic mapping in an F-2 population delimited cr into a 108 kb region with 16 predicted genes. Sequence variation analysis and expression profiling supported the epidermal patterning factor 2-like (McEPFL2) gene as the best candidate of the cr locus. A 1 bp deletion in the first exon of McEPFL2 in Y1 which would result in a truncated McEPFL2 protein may be the causal polymorphism for the phenotypic difference between Y1 and Z-1-4. The association of this 1 bp deletion with CR was further supported by gDNA sequencing of McEPFL2 among 31 bitter gourd accessions. This work provides a foundation for understanding the genetic and molecular control of fruit epidermal pattering and development, which also facilitates marker-assisted selection in bitter melon breeding.

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