Two divergent haplotypes from a highly heterozygous lychee genome suggest independent domestication events for early and late-maturing cultivars.
Two divergent haplotypes from a highly heterozygous lychee genome suggest independent domestication events for early and late-maturing cultivars.
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来自高度杂合荔枝基因组的两种不同的单倍型表明早熟和晚熟品种的独立驯化事件
DOI：
10.1038/s41588-021-00971-3
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发表时间：
2022-01
期刊：
影响因子：
30.8
通讯作者：
Li J
中科院分区：
文献类型：
--
作者：
Hu G;Feng J;Xiang X;Wang J;Salojärvi J;Liu C;Wu Z;Zhang J;Liang X;Jiang Z;Liu W;Ou L;Li J;Fan G;Mai Y;Chen C;Zhang X;Zheng J;Zhang Y;Peng H;Yao L;Wai CM;Luo X;Fu J;Tang H;Lan T;Lai B;Sun J;Wei Y;Li H;Chen J;Huang X;Yan Q;Liu X;McHale LK;Rolling W;Guyot R;Sankoff D;Zheng C;Albert VA;Ming R;Chen H;Xia R;Li J
荔枝是一种具有独特风味的热带水果。将妃子笑的基因组组装成15条假染色体，总长度约为470 Mb。高杂合度（2.27%）导致两个完整的单倍型组装。共发现13，517个等位基因（42.4%）在不同组织中差异表达。对72份重测序荔枝种质的分析揭示了两个独立的驯化事件。极早熟品种优先对齐一个单倍型驯化的野生种群在云南，而晚熟品种，主要映射到第二个单倍型驯化独立于野生种群在海南。广东早熟品种可能是由极早熟品种与晚熟品种杂交而成。一对CONSTANS样基因所包含的3.7 kb区域的可变缺失可能调节荔枝品种之间的果实成熟差异。这些基因组资源为荔枝驯化的自然历史提供了见解，并将加速荔枝和相关作物的改良。从高度杂合的荔枝品种“妃子笑”基因组中分离出两种不同的单倍型，并对72份荔枝种质进行重测序，为荔枝基因组进化和驯化历史提供了新的视角。
Lychee is an exotic tropical fruit with a distinct flavor. The genome of cultivar ‘Feizixiao’ was assembled into 15 pseudochromosomes, totaling ~470 Mb. 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 3.7 kb 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. Two divergent haplotypes from a highly heterozygous lychee genome of the cultivar ‘Feizixiao’ and resequencing of 72 lychee accessions provide insights into the genome evolution and domestication history of lychee.
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影响因子：
9.2
作者：
Chang CC;Chow CC;Tellier LC;Vattikuti S;Purcell SM;Lee JJ
通讯作者：
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影响因子：
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作者：
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影响因子：
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影响因子：
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作者：
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通讯作者：
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影响因子：
9.3
作者：
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