Floral evolution by simplification in Monanthotaxis (Annonaceae) and hypotheses for pollination system shifts.

ABSTRACT: Simplification by reduction has occurred many times independently in the floral evolution of angiosperms. These reductions have often been attributed to changes in reproductive biology. In the angiosperm plant family Annonaceae, most species have flowers with six petals, and many stamens and carpels. In the genus Monanthotaxis several deviations from this pattern have been observed, including flowers that contain three petals and three stamens only. New DNA sequences were generated for 42 specimens of Monanthotaxis. Five chloroplast markers and two nuclear markers for 72 out of 94 species of Monanthotaxis were used to reconstruct a phylogeny of the genus, which revealed several well-supported, morphologically distinct clades. The evolution of four quantitative and two qualitative floral ch

SUBMITTER: Hoekstra PH 

PROVIDER: S-EPMC6089970 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature