Evidence of a largely staminal origin for the Jaltomata calliantha (Solanaceae) floral corona.

ABSTRACT:

Background

Understanding the evolution of novel features requires homology assessments at different levels of biological organization. In flowering plants, floral coronas that play various roles in plant-pollinator interactions have evolved multiple times independently, but are highly variable in their final position and overall morphology. Coronas of the Solanaceae species Jaltomata calliantha are found between the corolla and stamens, adjacent to the gynoecium, and form cups that house copious amounts of their characteristic blood red nectar. To test the hypothesis that J. calliantha coronas evolved as an outgrowth of stamens and therefore have staminal identity, we assessed their development, floral organ identity gene expression, and cellular morphology.

Result

SUBMITTER: Kostyun JL 

PROVIDER: S-EPMC6475103 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature