华南农业大学李建国等研究人员合作揭示早熟和晚熟栽培荔枝品种的独立驯化事件。相关论文于2022年1月3日在线发表在《自然—遗传学》杂志上。
Title: Two divergent haplotypes from a highly heterozygous lychee genome suggest independent domestication events for early and late-maturing cultivars
Author: Hu, Guibing, Feng, Junting, Xiang, Xu, Wang, Jiabao, Salojrvi, Jarkko, Liu, Chengming, Wu, Zhenxian, Zhang, Jisen, Liang, Xinming, Jiang, Zide, Liu, Wei, Ou, Liangxi, Li, Jiawei, Fan, Guangyi, Mai, Yingxiao, Chen, Chengjie, Zhang, Xingtan, Zheng, Jiakun, Zhang, Yanqing, Peng, Hongxiang, Yao, Lixian, Wai, Ching Man, Luo, Xinping, Fu, Jiaxin, Tang, Haibao, Lan, Tianying, Lai, Biao, Sun, Jinhua, Wei, Yongzan, Li, Huanling, Chen, Jiezhen, Huang, Xuming, Yan, Qian, Liu, Xin, McHale, Leah K., Rolling, William, Guyot, Romain, Sankoff, David, Zheng, Chunfang, Albert, Victor A., Ming, Ray, Chen, Houbin, Xia, Rui, Li, Jianguo
Issue&Volume: 2022-01-03
Abstract: Lychee is an exotic tropical fruit with a distinct flavor. The genome of cultivar ‘Feizixiao’ was assembled into 15 pseudochromosomes, totaling ~470Mb. High heterozygosity (2.27%) resulted in two complete haplotypic assemblies. A total of 13,517 allelic genes (42.4%) were differentially expressed in diverse tissues. Analyses of 72 resequenced lychee accessions revealed two independent domestication events. The extremely early maturing cultivars preferentially aligned to one haplotype were domesticated from a wild population in Yunnan, whereas the late-maturing cultivars that mapped mostly to the second haplotype were domesticated independently from a wild population in Hainan. Early maturing cultivars were probably developed in Guangdong via hybridization between extremely early maturing cultivar and late-maturing cultivar individuals. Variable deletions of a 3.7kb region encompassed by a pair of CONSTANS-like genes probably regulate fruit maturation differences among lychee cultivars. These genomic resources provide insights into the natural history of lychee domestication and will accelerate the improvement of lychee and related crops.
DOI: 10.1038/s41588-021-00971-3
Source: https://www.nature.com/articles/s41588-021-00971-3
Nature Genetics:《自然—遗传学》,创刊于1992年。隶属于施普林格·自然出版集团,最新IF:41.307
官方网址:https://www.nature.com/ng/
投稿链接:https://mts-ng.nature.com/cgi-bin/main.plex
本期文章:《自然—遗传学》:Online/在线发表