Floral stem cell termination involves the direct regulation of AGAMOUS by PERIANTHIA

被引：78

作者：

Das, Pradeep ^{[1
,2
]}

Ito, Toshiro ^{[1
,3
]}

Wellmer, Frank ^{[1
,4
]}

Vernoux, Teva ^{[2
]}

Dedieu, Annick ^{[2
]}

Traas, Jan ^{[2
]}

Meyerowitz, Elliot M. ^{[1
]}

机构：

[1] CALTECH, Div Biol 156 29, Pasadena, CA 91125 USA

[2] Ecole Normale Super Lyon, Lab RDP, F-69007 Lyon, France

[3] Natl Univ Singapore, Temasek Life Sci Lab, Singapore 117604, Singapore

[4] Univ Dublin Trinity Coll, Smurfit Inst Genet, Dublin 2, Ireland

来源：

DEVELOPMENT | 2009年 / 136卷 / 10期

关键词：

AGAMOUS; Flower development; Stem cells; Arabidopsis; ARABIDOPSIS SHOOT MERISTEM; HOMEOTIC GENE; FLOWER DEVELOPMENT; ORGAN IDENTITY; EXPRESSION; THALIANA; ELEMENTS; WUSCHEL; TRANSCRIPTION; ACTIVATION;

D O I：

10.1242/dev.035436

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In Arabidopsis, the population of stem cells present in young flower buds is lost after the production of a fixed number of floral organs. The precisely timed repression of the stem cell identity gene WUSCHEL (WUS) by the floral homeotic protein AGAMOUS (AG) is a key part of this process. In this study, we report on the identification of a novel input into the process of floral stem cell regulation. We use genetics and chromatin immunoprecipitation assays to demonstrate that the bZIP transcription factor PERIANTHIA (PAN) plays a role in regulating stem cell fate by directly controlling AG expression and suggest that this activity is spatially restricted to the centermost region of the AG expression domain. These results suggest that the termination of floral stem cell fate is a multiply redundant process involving loci with unrelated floral patterning functions.

引用

页码：1605 / 1611

页数：7

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