FLORICAULA - A HOMEOTIC GENE REQUIRED FOR FLOWER DEVELOPMENT IN ANTIRRHINUM-MAJUS
FLORICAULA - A HOMEOTIC GENE REQUIRED FOR FLOWER DEVELOPMENT IN ANTIRRHINUM-MAJUS
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DOI：
10.1016/0092-8674(90)90426-f
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发表时间：
1990-12-21
期刊：
影响因子：
64.5
通讯作者：
CARPENTER, R
中科院分区：
文献类型：
--
作者：
COEN, ES;ROMERO, JM;CARPENTER, R
携带floricaula（flo）突变的植物不能从花序过渡到花分生组织，并且在花的位置有不定芽。 flo-613等位基因携带Tam 3转座子插入，这使得flo基因座的分离成为可能。 flow基因编码一个假定的蛋白质（FLO），含有一个富含脯氨酸的N-末端和一个高酸性区域。 原位杂交结果表明，flo基因在花发育的极早期阶段瞬时表达。 最早的表达见于苞片原基，其次为萼片、花瓣和腕足原基，但在雄蕊原基中未检测到表达。 这种表达模式对flo如何影响叶序性、器官识别和决定性有意义。 我们建议，flo相互作用的顺序与其他同源异型基因影响花器官的身份。
Plants carrying the floricaula (flo) mutation cannot make the transition from inflorescence to floral meristems and have indeterminate shoots in place of flowers. The flo-613 allele carries a Tam3 transposon insertion, which allowed the isolation of the flo locus. The flow gene encodes a putative protein (FLO) containing a proline-rich N-terminus and a highly acidic region. In situ hybridization shows that the flo gene is transiently expressed in the very early stages of flower development. The earliest expression seen is in bract primordia, followed by sepal, petal, and carpal primordia, but no expression is detected in stamen primordia. This pattern of expression has implications for how flo affects phyllotaxis, organ identify, and determinancy. We propose that flo interacts in a sequential manner with other homeotic genes affecting floral organ identity.