Year: 2022

HOTSPOT. "The Hawaiian flora has the highest incidence of polyploidy known, and most Hawaiian species are paleopolyploid, having evolved polyploidy prior to the dispersal of their ancestors to Hawaii." https://lnkd.in/eg_D7BR View in LinkedIn

EXPLOSIVE SPECIATION. "Nowhere else in the history of life is the influence of polyploidy more apparent as a possible diversifying force as it is among the angiosperms. Only the tetraploidization event in the stem lineage of ray-finned fish may come close, having potentially resulted in >20 000 living species." https://lnkd.in/eg_D7BR View in LinkedIn

EXCEPTIONAL STATUS. "Despite clear evidence for WGD underlying all vertebrates, many fewer lineage-specific polyploidy events have been detected than among angiosperms, which have a far shorter combined evolutionary history." (WGD = whole genome duplication). https://lnkd.in/eg_D7BR View in LinkedIn

ANGIOSPERMS VS VERTEBRATE WGD. "Much of this disparity can be attributed to the different nature of plant vs. animal development vis-à-vis compensation for gene dosage. Subfunctionalization of gene duplicates has been shown to be a prominent molecular evolutionary force for coping with WGD in both flowering plants and ray-finned fish." (WGD = whole genome duplication). https://lnkd.in/eg_D7BR View in LinkedIn

GLOBAL IMPACT. "The angiosperms have diverged into many more habitats, life forms, and biotic interactions, and as such, the importance of their polyploid heritage cannot be underestimated as a force of truly global impact." https://lnkd.in/eg_D7BR View in LinkedIn

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TWO GENE DUPLICATION TYPES. "Comparative analysis of multiple angiosperm genomes has implicated gene duplication in the expansion and diversification of many gene families. However, empirical data and theory suggest that whole-genome and small-scale duplication events differ with respect to the types of genes preserved as duplicate pairs." https://lnkd.in/eHCDVhZ View in LinkedIn

FIRST DUPLICATION TYPE. "Whole genome duplicates are 700 bp longer and are expressed in 20% more tissues than tandem duplicates." https://lnkd.in/eHCDVhZ View in LinkedIn

SELECTIVE DUPLICATION. "Certain functional categories are over-represented in each class of duplicates." https://lnkd.in/eHCDVhZ View in LinkedIn

GENE ENRICHMENT IN DUPLICATION. "Disease resistance genes and receptor-like kinases commonly occur in tandem but are significantly under-retained following whole genome duplication, while whole genome duplicate pairs are enriched for members of signal transduction cascades and transcription factors." https://lnkd.in/eHCDVhZ View in LinkedIn