Paleo-polyploidization in Lycophytes  

作　　者：Jinpeng Wang Jigao Yu Pengchuan Sun Chao Li Xiaoming Song Tianyu Lei Yuxian Li Jiaqing Yuan Sangrong Sun Hongling Ding Xueqian Duan Shaoqi Shen Yanshuang Shen Jing Li Fanbo Meng Yangqin Xie Jianyu Wang Yue Hou Jin Zhang Xianchun Zhang Xiu-Qing Li Andrew HPaterson Xiyin Wang 

机构地区：[1]Center for Computational Biology and Genomics,and School of Life Sciences,North China University of Science and Technology,Tangshan 063200,China [2]National Key Laboratory for North China Crop Improvement and Regulation,Agriculture University of Hebei,Baoding 071001,China [3]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Science,Beijing 100093,China [4]Fredericton Research and Development Centre,Agriculture and Agri-Food Canada,Fredericton,New Brunswick,E3B 4Z7,Canada [5]Plant Genome Mapping Laboratory,University of Athens,Athens,GA 30602,USA [6]Department of Plant Biology,University of Georgia,Athens,GA 30602,USA [7]Department of Crop and Soil Science,University of Georgia,Athens,GA 30602,USA [8]Department of Genetics,University of Georgia,Athens,GA 30602,USA

出　　处：《Genomics, Proteomics & Bioinformatics》2020年第3期333-340,共8页基因组蛋白质组与生物信息学报（英文版）

基　　金：the Ministry of Science and Technology of the People’s Republic of China(Grant No.2016YFD0101001);the China National Science Foundation(Grant Nos.31371282 to XW,31510333 to JW,and 31661143009 to XW);the Natural Science Foundation of Hebei Province(Grant No.C2015209069 to JW);Tangshan Key Laboratory Project to XW。

摘　　要：Lycophytes and seed plants constitute the typical vascular plants.Lycophytes have been thought to have no paleo-polyploidization although the event is known to be critical for the fast expansion of seed plants.Here,genomic analyses including the homologous gene dot plot analysis detected multiple paleo-polyploidization events,with one occurring approximately 13–15 million years ago(MYA)and another about 125–142 MYA,during the evolution of the genome of Selaginella moellendorffii,a model lycophyte.In addition,comparative analysis of reconstructed ancestral genomes of lycophytes and angiosperms suggested that lycophytes were affected by more paleopolyploidization events than seed plants.Results from the present genomic analyses indicate that paleo-polyploidization has contributed to the successful establishment of both lineages—lycophytes and seed plants—of vascular plants.

关 键 词：Vascular plant LYCOPHYTES GENOME POLYPLOIDY EVOLUTION 

分 类 号：Q943[生物学—植物学]