A dynamical phyllotaxis model to determine floral organ number.

ABSTRACT: How organisms determine particular organ numbers is a fundamental key to the development of precise body structures; however, the developmental mechanisms underlying organ-number determination are unclear. In many eudicot plants, the primordia of sepals and petals (the floral organs) first arise sequentially at the edge of a circular, undifferentiated region called the floral meristem, and later transition into a concentric arrangement called a whorl, which includes four or five organs. The properties controlling the transition to whorls comprising particular numbers of organs is little explored. We propose a development-based model of floral organ-number determination, improving upon earlier models of plant phyllotaxis that assumed two developmental processes: the sequential initiation of

SUBMITTER: Kitazawa MS 

PROVIDER: S-EPMC4423988 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature