Divergent regulatory OsMADS2 functions control size, shape and differentiation of the highly derived rice floret second-whorl organ.

ABSTRACT: Functional diversification of duplicated genes can contribute to the emergence of new organ morphologies. Model eudicot plants like Arabidopsis thaliana and Antirrhinum majus have a single PI/GLO gene that together with AP3/DEF regulate petal and stamen formation. Lodicules of grass flowers are morphologically distinct reduced organs occupying the position of petals in other flowers. They serve a distinct function in partial and transient flower opening to allow stamen emergence and cross-pollination. Grasses have duplicated PI/GLO-like genes and in rice (Oryza sativa) one these genes, OsMADS2, controls lodicule formation without affecting stamen development. In this study, we investigate the mechanistic roles played by OsMADS2. We ascribe a function for OsMADS2 in controlling cell divisio

SUBMITTER: Yadav SR 

PROVIDER: S-EPMC1893039 | biostudies-literature | 2007 May

REPOSITORIES: biostudies-literature