The red bayberry genome and genetic basis of sex determination

文献类型： 外文期刊

第一作者： Jia, Hui-Min

作者： Jia, Hui-Min;Jia, Hui-Juan;Wang, Yan;Zhao, Hai-Bo;Shen, Yu-Tong;Niu, Qing-Feng;Qiu, Jie;Zhao, Lan;Xie, Han-Bing;Fu, Wan-Yi;Jin, Jing;Gao, Zhong-Shan;Cai, Qing-Le;Yang, Wei-Fei;Zhan, Dong-Liang;Gao, Jin-Long;Wang, Jun-Yi;Wang, Guo-Yun;Zhou, Chao-Chao;Li, Ying-Hui;Shen, Yu-Tong;Shen, Yu-Tong;Chang, Le;Fan, Long-Jiang;Chang, Le;Fan, Long-Jiang;Li, Xiong-Wei;Jiao, Yun;Tu, Ting;Chai, Chun-Yan;van de Weg, Eric;Yang, Wei-Fei

作者机构：

关键词： Morella rubra; genome; sex-determining region; sex-linked marker

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：9.803； 五年影响因子：9.555 ）

ISSN： 1467-7644

年卷期： 2019 年 17 卷 2 期

页码：

收录情况： SCI

摘要： Morella rubra, red bayberry, is an economically important fruit tree in south China. Here, we assembled the first high-quality genome for both a female and a male individual of red bayberry. The genome size was 313-Mb, and 90% sequences were assembled into eight pseudo chromosome molecules, with 32 493 predicted genes. By whole-genome comparison between the female and male and association analysis with sequences of bulked and individual DNA samples from female and male, a 59-Kb region determining female was identified and located on distal end of pseudochromosome 8, which contains abundant transposable element and seven putative genes, four of them are related to sex floral development. This 59-Kb female-specific region was likely to be derived from duplication and rearrangement of paralogous genes and retained non-recombinant in the female-specific region. Sex-specific molecular markers developed from candidate genes co-segregated with sex in a genetically diverse female and male germplasm. We propose sex determination follow the ZW model of female heterogamety. The genome sequence of red bayberry provides a valuable resource for plant sex chromosome evolution and also provides important insights for molecular biology, genetics and modern breeding in Myricaceae family.

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