您好,欢迎访问河北省农林科学院 机构知识库!

Recursive Paleohexaploidization Shaped the Durian Genome

文献类型: 外文期刊

作者: Wang, Jinpeng 1 ; Yuan, Jiaqing 1 ; Yu, Jigao 1 ; Meng, Fanbo 1 ; Sun, Pengchuan 1 ; Li, Yuxian 1 ; Yang, Nanshan 1 ; Wan 1 ;

作者机构: 1.North China Univ Sci & Technol, Sch Life Sci, Tangshan 063210, Hebei, Peoples R China

2.North China Univ Sci & Technol, Ctr Genom & Computat Biol, Tangshan 063210, Hebei, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Cereal & Oil Crop Inst, 162 Hengshanjie St, Shijiazhuang 050035, Hebei, Peoples R China

4.Agr & Agri Food Canada, Fredericton Res & Dev Ctr, Fredericton, NB E3B 4Z7, Canada

期刊名称:PLANT PHYSIOLOGY ( 影响因子:8.34; 五年影响因子:8.972 )

ISSN: 0032-0889

年卷期: 2019 年 179 卷 1 期

页码:

收录情况: SCI

摘要: The durian (Durio zibethinus) genome has recently become available, and analysis of this genome reveals two paleopolyploidization events previously inferred as shared with cotton (Gossypium spp.). Here, we reanalyzed the durian genome in comparison with other well-characterized genomes. We found that durian and cotton were actually affected by different polyploidization events: hexaploidization in durian; similar to 19-21 million years ago (mya) and decaploidization in cotton; similar to 13-14 mya. Previous interpretations of shared polyploidization events may have resulted from the elevated evolutionary rates in cotton genes due to the decaploidization and insufficient consideration of the complexity of plant genomes. The decaploidization elevated evolutionary rates of cotton genes by; similar to 64% compared to durian and explained a previous; similar to 4-fold over dating of the event. In contrast, the hexaploidization in durian did not prominently elevate gene evolutionary rates, likely due to its long generation time. Moreover, divergent evolutionary rates probably explain 98.4% of reconstructed phylogenetic trees of homologous genes being incongruent with expected topology. The findings provide further insight into the roles played by polypoidization in the evolution of genomes and genes, and they suggest revisiting existing reconstructed phylogenetic trees.

  • 相关文献
作者其他论文 更多>>