Lineage-specific rediploidization is a mechanism to explain time-lags between genome duplication and evolutionary diversification
作者: Fiona M. RobertsonManu Kumar GundappaFabian GrammesTorgeir R. HvidstenAnthony K. RedmondSigbjørn LienSamuel A. M. MartinPeter W. H. HollandSimen R. SandveDaniel J. Macqueen
作者单位: 1University of Aberdeen
2Norwegian University of Life Sciences
3Umeå University
4University of Oxford
刊名: Genome Biology, 2017, Vol.18 (1)
来源数据库: Springer Nature Journal
DOI: 10.1186/s13059-017-1241-z
关键词: Whole genome duplicationRediploidizationSpecies radiationLineage-specific Ohnologue Resolution (LORe)Duplicate genesFunctional divergenceAutotetraploidizationSalmonid fish
原始语种摘要: The functional divergence of duplicate genes (ohnologues) retained from whole genome duplication (WGD) is thought to promote evolutionary diversification. However, species radiation and phenotypic diversification are often temporally separated from WGD. Salmonid fish, whose ancestor underwent WGD by autotetraploidization ~95 million years ago, fit such a ‘time-lag’ model of post-WGD radiation, which occurred alongside a major delay in the rediploidization process. Here we propose a model, ‘lineage-specific ohnologue resolution’ (LORe), to address the consequences of delayed rediploidization. Under LORe, speciation precedes rediploidization, allowing independent ohnologue divergence in sister lineages sharing an ancestral WGD event.
全文获取路径: Springer Nature  (合作)

  • specific 
  • evolutionary 进化
  • between 在中间
  • duplication 重复
  • divergence 分歧
  • genome 基因组
  • often 往往
  • radiation 辐射
  • promote 助长
  • process 过程