|Title||The red bayberry genome and genetic basis of sex determination|
|Author(s)||Jia, Hui Min; Jia, Hui Juan; Cai, Qing Le; Wang, Yan; Zhao, Hai Bo; Yang, Wei Fei; Wang, Guo Yun; Li, Ying Hui; Zhan, Dong Liang; Shen, Yu Tong; Niu, Qing Feng; Chang, Le; Qiu, Jie; Zhao, Lan; Xie, Han Bing; Fu, Wan Yi; Jin, Jing; Li, Xiong Wei; Jiao, Yun; Zhou, Chao Chao; Tu, Ting; Chai, Chun Yan; Gao, Jin Long; Fan, Long Jiang; Weg, Eric van de; Wang, Jun Yi; Gao, Zhong Shan|
|Source||Plant Biotechnology Journal (2018). - ISSN 1467-7644|
WUR PB Biodiversiteit en Genetische Variatie
|Publication type||Refereed Article in a scientific journal|
|Keyword(s)||genome - Morella rubra - sex-determining region - sex-linked marker|
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.