Genome sequencing and phylogenetic analysis of allotetraploid Salix matsudana Koidz

查看全文 作　　者：Jian [1]Zhang;Huwei [2]Yuan;Yujuan [3]Li;Yanhong [1]Chen;Guoyuan [1]Liu;Meixia [4]Ye;Chunmei [1]Yu;Bolin [1]Lian;Fei [1]Zhong;Yuna [1]Jiang;Jichen [4,5]Xu

机构地区：[1]Key Lab of Landscape Plant Genetics and Breeding,School of Life Science,Nantong University,226019 Nantong,China;[2]State Key Laboratory of Subtropical Silviculture,Zhejiang A&F University,311300 Hangzhou,China;[3]Jiangsu Riverine Institute of Agricultural Sciences,226541 Nantong,Jiangsu,China;[4]College of Biological Sciences and Technology,Beijing Forestry University,100083 Beijing,China;[5]National Engineering Laboratory of Tree Breeding,Beijing Forestry University,100083 Beijing,China

出　　处：《Horticulture Research》索引2020年第7卷第1期,共11页

基　　金：supported by the National Natural Science Foundation of China(31971681);Jiangsu Province Forestry Science and Technology Innovation and Promotion Project(LYKJ[2018]36);Nantong University Scientific Research Start-up Project for Introducing Talents(18R08). 摘　　要：Polyploidy is a common phenomenon among willow species.In this study,genome sequencing was conducted for Salix matsudana Koidz(also named Chinese willow),an important greening and arbor tree species,and the genome of this species was compared with those of four other tree species in Salicaceae.The total genome sequence of S.matsudana was 655.72 Mb in size,with repeated sequences accounting for 45.97%of the total length.In total,531.43 Mb of the genome sequence could be mapped onto 38 chromosomes using the published genetic map as a reference.The genome of S.matsudana could be divided into two groups,the A and B genomes,through homology analysis with the genome of Populus trichocarpa,and the A and B genomes contained 23,985 and 25,107 genes,respectively.4DTv combined transposon analysis predicted that allotetraploidy in S.matsudana appeared~4 million years ago.The results from this study will help reveal the evolutionary history of S.matsudana and lay a genetic basis for its breeding. 关键词：SPECIES GENOME ANALYSIS

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Genome sequencing and phylogenetic analysis of allotetraploid Salix matsudana Koidz

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