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- W2800883607 abstract "Premise of the Study Polyploidy or whole‐genome duplication ( WGD ) pervades the evolutionary history of angiosperms. Despite extensive progress in our understanding of WGD , the role of these events in promoting diversification is still not well understood. We seek to clarify the possible association between WGD and diversification rates in flowering plants. Methods Using a previously published phylogeny spanning all land plants (31,749 tips) and WGD events inferred from analyses of the 1000 Plants (1 KP ) transcriptome data, we analyzed the association of WGD s and diversification rates following numerous WGD events across the angiosperms. We used a stepwise AIC approach ( MEDUSA ), a Bayesian mixture model approach ( BAMM ), and state‐dependent diversification analyses (Mu SSE ) to investigate patterns of diversification. Sister‐clade comparisons were used to investigate species richness after WGD s. Key Results Based on the density of 1 KP taxon sampling, 106 WGD s were unambiguously placed on the angiosperm phylogeny. We identified 334–530 shifts in diversification rates. We found that 61 WGD events were tightly linked to changes in diversification rates, and state‐dependent diversification analyses indicated higher speciation rates for subsequent rounds of WGD . Additionally, 70 of 99 WGD events showed an increase in species richness compared to the sister clade. Conclusions Forty‐six of the 106 WGD s analyzed appear to be closely associated with upshifts in the rate of diversification in angiosperms. Shifts in diversification do not appear more likely than random within a four‐node lag phase following a WGD ; however, younger WGD events are more likely to be followed by an upshift in diversification than older WGD events." @default.
- W2800883607 created "2018-05-17" @default.
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- W2800883607 date "2018-03-01" @default.
- W2800883607 modified "2023-10-17" @default.
- W2800883607 title "Impact of whole‐genome duplication events on diversification rates in angiosperms" @default.
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