Publication Date:
2003-05-31
Description:
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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ohashi, Yohei -- Oka, Atsuhiro -- Rodrigues-Pousada, Renato -- Possenti, Marco -- Ruberti, Ida -- Morelli, Giorgio -- Aoyama, Takashi -- New York, N.Y. -- Science. 2003 May 30;300(5624):1427-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775839" target="_blank"〉PubMed〈/a〉
Keywords:
Arabidopsis/*genetics/growth & development/*metabolism
;
Arabidopsis Proteins/chemistry/*genetics/*metabolism
;
Dexamethasone/pharmacology
;
Gene Expression Regulation, Plant
;
Genes, Plant
;
Homeodomain Proteins/chemistry/genetics/*metabolism
;
Morphogenesis
;
Phospholipase D/*genetics/metabolism
;
Phospholipids/*metabolism
;
Plant Epidermis/cytology/metabolism
;
Plant Roots/cytology/*growth & development/metabolism
;
Plants, Genetically Modified
;
Promoter Regions, Genetic
;
*Signal Transduction
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink
