Chromosome-Level Reference Genome and Population Genomic Analysis Provide Insights into the Evolution and Improvement of Domesticated Mulberry (Morns alba)  被引量:21

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作  者:Feng Jiao Rongsong Luo Xuelei Dai Hui Liu Gang Yu Shuhua Han Xin Lu Chao Su Qi Chen Qinxia Song Caiting Meng Fanghong Li Hongmei Sun Rui Zhang Tian Hui Yonghua Qian Aichun Zhao Yu Jiang 

机构地区:[1]The Sericultural and Silk Research Institute,College of Animal Science and Technology,Northwest A&F University,Yangling 712100,China [2]Key Laboratory of Animal Genetics,Breeding and Reproduction of Shaanxi Province,College of Animal Science and Technology,Northwest A&F University,Yangling 712100,China [3]State Key Laboratory of Silkworm Genome Biology,Institute of Sericulture and Systems Biology,Southwest University,Chong Qing 400716,China [4]State Key Laboratory of Reproductive Regulation&Breeding of Grassland Livestock,Inner Mongolia University,Hohhot 010070,China

出  处:《Molecular Plant》2020年第7期1001-1012,共12页分子植物(英文版)

基  金:The work was supported by the National Key Research and Development Project of China,China(no.2019YFD1000600);the Fundamental Research Funds for the Central Universities of Northwest A&F University,China(2452619041);Funds of Modern Agricultural Industrial Technology System(no.CARS-18).

摘  要:Mulberry(Morns spp.)is the sole plant consumed by the domesticated silkworm.However,the genome of domesticated mulberry has not yet been sequenced,and the ploidy level of this species remains unclear.Here,we report a high-quality,chromosome-level domesticated mulberry(Morus alba)genome.Analysis of genomic data and karyotype analyses confirmed that M.alba is a diploid with 28 chromosomes(2/7=2x=28).Population genomic analysis based on resequencing of 134 mulberry accessions classified domesticated mulberry into three geographical groups,namely,Taihu Basin of southeastern China(Hu mulberry),northern and southwestern China,and Japan.Hu mulberry had the lowest nucleotide diversity among these accessions and demonstrated obvious signatures of selection associated with environmental adaptation.Further phylogenetic analysis supports a previous proposal that multiple domesticated mulberry accessions previously classified as different species actually belong to one species.This study expands our understanding of genome evolution of the genus Morus and population structure of domesticated mulberry,which would facilitate mulberry breeding and improvement.

关 键 词:domesticated mulberry de novo assembly population genomics comparative genomics SERICULTURE environment adaption 

分 类 号:Q94[生物学—植物学]

 

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