Modulation of phospholipid signaling by GLABRA2 in root-hair pattern formation

被引：222

作者：

Ohashi, Y

Oka, A

Rodrigues-Pousada, R

Possenti, M

Ruberti, I

Morelli, G

Aoyama, T ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[2] Ist Nazl Ric Alimenti & Nutr, I-00178 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Genet & Biol Mol, Ctr Studio Acidi Nucl, I-00185 Rome, Italy

来源：

SCIENCE | 2003年 / 300卷 / 5624期

关键词：

D O I：

10.1126/science.1083695

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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.

引用

页码：1427 / 1430

页数：5

共 20 条

[1] Identification of a cis-regulatory element for L1 layer-specific gene expression, which is targeted by an L1-specific homeodomain protein [J].