Nature 1996 Feb 29;379(6568):791-7

Control of inflorescence architecture in Antirrhinum.

Bradley D, Carpenter R, Copsey L, Vincent C, Rothstein S, Coen E

Genetics Department, John Innes Centre, Norwich, UK.

Flowering plants exhibit two types of inflorescence architecture: determinate
and indeterminate. The centroradialis mutation causes the normally indeterminate
inflorescence of Antirrhinum to terminate in a flower. We show that
centroradialis is expressed in the inflorescence apex a few days after floral
induction, and interacts with the floral-meristem-identity gene floricaula to
regulate flower position and morphology. The protein CEN is similar to animal
proteins that associate with lipids and GTP-binding proteins. We propose a model
for how different inflorescence structures may arise through the action and
evolution of centroradialis.

PMID: 8587601, UI: 96172853