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Published on: August 29, 2019
Dual Fertilization, Intragenomic Conflict, Genome Downsizing, and Angiosperm Dominance
1San Francisco State University, San Francisco, CA 94132, USA.
Abstract:
New work suggests 'subgenome dominance' in polyploids may only occur in angiosperms. Subgenome dominance could explain angiosperm-specific genome reduction, with potential implications for angiosperms' global dominance. I suggest that evolution of the endosperm could have selected for the evolution of subgenome dominance, due to increased hybrid/polyploid incompatibilities and/or through direct reciprocal suppression of maternally- and paternally-inherited genomes.
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