根毛
细胞生物学
同源盒
生物
转录因子
异位表达
拟南芥
基因
遗传学
突变体
作者
Yohei Ohashi,Atsuhiro Oka,Renato A. Rodrigues-Pousada,Marco Possenti,Ida Ruberti,Giorgio Morelli,Takashi Aoyama
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2003-05-30
卷期号:300 (5624): 1427-1430
被引量:271
标识
DOI:10.1126/science.1083695
摘要
The root-hair pattern of Arabidopsis is determined through a regulatory circuit composed of transcription factor genes. The homeobox gene GLABRA2 (GL2) has been considered a key component, acting farthest downstream in this regulation. GL2 modified to include a transactivating function caused epidermal cells to develop ectopic root hairs or root hair-like structures. With this system, the phospholipase Dzeta1 gene (AtPLDzeta1) was identified as a direct target of GL2. Inducible expression of AtPLDzeta1 promoted ectopic root-hair initiation. We conclude that GL2 exerts its regulatory effect on root-hair development through modulation of phospholipid signaling.
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