Genetic association of ETHYLENE-INSENSITIVE3-like sequence with the sex-determining M locus in cucumber (Cucumis sativus L.)

文献类型： 外文期刊

第一作者： Jia, Zhiqi

作者： Jia, Zhiqi;Huang, Sanwen;Xu, Liang;Lu, Xiangyang;Chen, Huiming;Xu, Yong;Fei, Zhangjun;Fei, Zhangjun;Xu, Liang;Lu, Xiangyang;Chen, Huiming;Liu, Shiqiang;Yang, Qing

作者机构：

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期： 2008 年 117 卷 6 期

页码：

收录情况： SCI

摘要： Cucumber (Cucumis sativus L.) has served as the model system for sex expression in flowering plants and its sex type is predominantly controlled by two genetic loci, F and M. Ethylene is the major plant hormone that regulates sex expression in cucumber. The current model predicts that ethylene serves as both a promoter of femaleness via the F locus and an inhibitor of the male sex via the M locus. In support of this model, genetic, genomic, and transcript analyses indicate that the F gene encodes a key enzyme in ethylene biosynthesis. In this study, we discovered that the M locus co-segregates with an ETHYLENE-INSENSITIVE3 (EIN3)-like genomic sequence in an F(2) population of 96 individuals. This genetic association agrees with the prediction that the M locus is involved in ethylene signaling, thus providing another line of evidence in favor of the model. In addition, we generated an amplified fragment length polymorphism (AFLP((R))) map of the M locus, which was delimited into a genetic interval of 2.5 cM. The genetic association and the local map will assist the molecular isolation of the M gene using the combination of positional cloning and candidate gene approach.

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