- Author:
Jinpeng WANG
1
,
2
,
3
;
Jigao YU
1
,
3
;
Pengchuan SUN
4
;
Chao LI
4
;
Xiaoming SONG
1
,
5
;
Tianyu LEI
4
;
Yuxian LI
4
;
Jiaqing YUAN
4
;
Sangrong SUN
4
;
Hongling DING
4
;
Xueqian DUAN
4
;
Shaoqi SHEN
4
;
Yanshuang SHEN
4
;
Jing LI
4
;
Fanbo MENG
4
;
Yangqin XIE
4
;
Jianyu WANG
4
;
Yue HOU
4
;
Jin ZHANG
4
;
Xianchun ZHANG
6
;
Xiu-Qing LI
7
;
Andrew H PATERSON
8
,
9
,
10
,
11
;
Xiyin WANG
1
,
12
Author Information
- Publication Type:Research Support, Non-U.S. Gov't
- Keywords: Evolution; Genome; Lycophytes; Polyploidy; Vascular plant
- MeSH: Evolution, Molecular; Genome, Plant; Genomics; Phylogeny; Polyploidy; Selaginellaceae/genetics*
- From: Genomics, Proteomics & Bioinformatics 2020;18(3):333-340
- CountryChina
- Language:English
- Abstract: 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 paleo-polyploidization 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.