New Roles for MADS-box Genes in Higher Plants

Abstract

Putative transcription factors bearing a particular DNA-binding domain called "MADS-box", have been mainly involved in processes related to flower development. It is generally accepted that MADS-box genes may have played a central role in the evolution of plant reproductive structures. During the last years increasing evidence points to more general roles of these factors that spans to the control of the flowering time, but also to other non-reproductive processes. Moreover, sequencing of the Arabidopsis genome has led to the recognition of above hundred MADS-box genes in this model organism, most of them still uncharacterized. This opens the possibility of uncovering new roles for MADS-box genes in plant development and evolution.