期刊
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE
卷 83, 期 4, 页码 343-349出版社
NATL RESEARCH COUNCIL CANADA
DOI: 10.1139/B05-017
关键词
SHOOTMERISTEMLESS; LATERAL SUPPRESSOR; AINTEGUMENTA; adaxial primordial domain; abaxial primordial domain; shoot morphogenesis
Axillary and floral meristems are shoot meristems that initiate postembryonically. In Arabidopsis, axillary meristems give rise to branches during vegetative development while floral meristems give rise to flowers during reproductive development. This review compares the development of these meristems from their initiation at the shoot apical meristem up to the establishment of their specific developmental fates. Axillary and floral meristems originate from lateral primordia that form at flanks of the shoot apical meristem. Initial development of vegetative and reproductive primordia are similar, resulting in the formation of a morphologically defined primordium partitioned into adaxial and abaxial domains. The adaxial primordial domain is competent to form a meristem, while the abaxial domain correlates with the formation of a leaf. This review proposes that all primordia partition into domains competent to form the meristem and the leaf. According to this model, a vegetative primordium develops as leaf-bias while a reproductive primordium develops as meristem-bias.shoot morphogenesis.
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