Paleo-polyploidization in Lycophytes.

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 H PATERSON; Xiyin WANG

Genomics, Proteomics & Bioinformatics 2020;18(3):333-340

doi:10.1016/j.gpb.2020.10.002

Paleo-polyploidization in Lycophytes.

Jinpeng WANG ¹ ; Jigao YU ² ; Pengchuan SUN ³ ; Chao LI ³ ; Xiaoming SONG ⁴ ; Tianyu LEI ³ ; Yuxian LI ³ ; Jiaqing YUAN ³ ; Sangrong SUN ³ ; Hongling DING ³ ; Xueqian DUAN ³ ; Shaoqi SHEN ³ ; Yanshuang SHEN ³ ; Jing LI ³ ; Fanbo MENG ³ ; Yangqin XIE ³ ; Jianyu WANG ³ ; Yue HOU ³ ; Jin ZHANG ³ ; Xianchun ZHANG ⁵ ; Xiu-Qing LI ⁶ ; Andrew H PATERSON ⁷ ; Xiyin WANG ⁸

Affiliations

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1. Center for Computational Biology and Genomics, and School of Life Sciences, North China University of Science and Technology, Tangshan 063200, China; National Key Laboratory for North China Crop Improvement and Regulation, Agriculture University of Hebei, Baoding 071001, China; State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Science, Beijing 100093, China.

2. Center for Computational Biology and Genomics, and School of Life Sciences, North China University of Science and Technology, Tangshan 063200, China; State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Science, Beijing 100093, China.

3. Center for Computational Biology and Genomics, and School of Life Sciences, North China University of Science and Technology, Tangshan 063200, China.

4. Center for Computational Biology and Genomics, and School of Life Sciences, North China University of Science and Technology, Tangshan 063200, China; National Key Laboratory for North China Crop Improvement and Regulation, Agriculture University of Hebei, Baoding 071001, China.

5. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Science, Beijing 100093, China.

6. Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, New Brunswick, E3B 4Z7, Canada.

7. Plant Genome Mapping Laboratory, University of Athens, Athens, GA 30602, USA; Department of Plant Biology, University of Georgia, Athens, GA 30602, USA; Department of Crop and Soil Science, University of Georgia, Athens, GA 30602, USA; Department of Genetics, University of Georgia, Athens, GA 30602, USA.

8. Center for Computational Biology and Genomics, and School of Life Sciences, North China University of Science and Technology, Tangshan 063200, China; National Key Laboratory for North China Crop Improvement and Regulation, Agriculture University of Hebei, Baoding 071001, China. Electronic address: wangxiyin@vip.sina.com.

Keywords

Evolution; Genome; Lycophytes; Polyploidy; Vascular plant

Country

China

Language

English

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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.

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