Convergent evolutionary patterns of heterostyly across angiosperms support the pollination-precision hypothesis

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 9, 2024

Since the insights by Charles Darwin, heterostyly, a floral polymorphism with morphs bearing stigmas and anthers at reciprocal heights, has become model system for study of natural selection. Based on his archetypal heterostylous flower, including regular symmetry, few stamens tube, Darwin hypothesised that heterostyly evolved to promote outcrossing through efficient pollen transfer between involving different areas pollinator's body, thus proposing seminal pollination-precision hypothesis. Here we update number other style-length polymorphic taxa 247 genera belonging 34 families, notably expanding known cases 20%. Using phylogenetic comparative analyses across angiosperms, show numerous independent origins associated actinomorphic, tubular flowers low sex organs, fused corolla, pollination long-tongued insects. These associations provide support Darwinian hypothesis as basis convergent evolution angiosperms.

Language: Английский

Cell elongation and altered phytohormone levels play a role in establishing distyly in Averrhoa carambola

Gene, Journal Year: 2024, Volume and Issue: 939, P. 149167 - 149167

Published: Dec. 15, 2024

Language: Английский