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Gene Mapping of a Mutant Mungbean (Vigna radiata L.) Using New Molecular Markers Suggests a Gene Encoding a YUC4-like Protein Regulates the Chasmogamous Flower Trait

文献类型： 外文期刊

作者： Chen, Jingbin 1 ; Somta, Prakit 2 ; Chen, Xin 1 ; Cui, Xiaoyan 1 ; Yuan, Xingxing 1 ; Srinives, Peerasak 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Vegetable Crops, Nanjing, Jiangsu, Peoples R China

2.Kasetsart Univ, Dept Agron, Fac Agr Kamphaeng Saen, Nakhon Pathom, Thailand

关键词： mungbean;Vigna radiata;chasmogamy;outcrossing;gene mapping;hybrid development

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2016 年 7 卷

页码：

收录情况： SCI

摘要： Mungbean (Vigna radiata L.) is a cleistogamous plant in which flowers are pollinated before they open, which prevents yield improvements through heterosis. We previously generated a chasmogamous mutant (CM) mungbean in which open flowers are pollinated. In this study, we developed insertion/deletion (indel) markers based on the transcriptome differences between CM and Sulu-1 (i.e., normal flowering) plants. An F-2 population derived from a cross between CM and Sulu-1 was used for gene mapping. Segregation analyses revealed that a single recessive gene regulates the production of chasmogamous flowers. Using newly developed indel and simple sequence repeat markers, the cha gene responsible for the chasmogamous flower trait was mapped to a 277.1-kb segment on chromosome 6. Twelve candidate genes were detected in this segment, including Vradi06g12650, which encodes a YUCCA family protein associated with floral development. A single base pair deletion producing a frame-shift mutation and a premature stop codon in Vradi06g12650 was detected only in CM plants. This suggested that Vradi06g12650 is a cha candidate gene. Our results provide important information for the molecular breeding of chasmogamous mungbean lines, which may serve as new genetic resources for hybrid cultivar development.

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[1]Novel Alleles of Two Tightly Linked Genes Encoding Polygalacturonase-Inhibiting Proteins (VrPGIP1 and VrPGIP2) Associated with the Br Locus That Confer Bruchid (Callosobruchus spp.) Resistance to Mungbean (Vigna radiata) Accession V2709. Kaewwongwal, Anochar,Somta, Prakit,Yimram, Tarika,Srinives, Peerasak,Kaewwongwal, Anochar,Somta, Prakit,Srinives, Peerasak,Chen, Jingbin,Chen, Xin,Kongjaimun, Alisa. 2017

[2]Genome re-sequencing of two accessions and fine mapping the locus of lobed leaflet margins in mungbean. Jiao, Keyuan,Guo, Wuxiu,Jiao, Keyuan,Li, Xin,Yuan, Xingxing,Yuan, Xingxing,Cui, Xiaoyan,Chen, Xin.

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