Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate.

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Abstract Text:

Yinbo Gan,Chang Liu,Hao Yu,Pierre Broun,

The effective integration of hormone signals is essential to normal plant growth and development. Gibberellins (GA) and cytokinins act antagonistically in leaf formation and meristem maintenance and GA counteract some of the effects of cytokinins on epidermal differentiation. However, both can stimulate the initiation of defensive epidermal structures called trichomes. To understand how their relative influence on epidermal cell fate is modulated, we investigated the molecular mechanisms through which they regulate trichome initiation in Arabidopsis. The control by cytokinins of trichome production requires two genes expressed in late inflorescence organs, ZFP8 and GIS2, which encode C2H2 transcription factors related to GLABROUS INFLORESCENCE STEMS (GIS). Cytokinin-inducible GIS2 plays a prominent role in the cytokinin response, in which it acts downstream of SPINDLY and upstream of GLABROUS1. In addition, GIS2 and ZFP8 mediate, like GIS, the regulation of trichome initiation by gibberellins. By contrast, GIS does not play a significant role in the cytokinin response. Collectively, GIS, ZFP8 and GIS2, which encode proteins that are largely equivalent in function, play partially redundant and essential roles in inflorescence trichome initiation and in its regulation by GA and cytokinins. These roles are consistent with their pattern of expression and with the regional influence of GA and cytokinins on epidermal differentiation. Our findings show that functional specialization within a transcription factor gene family can facilitate the integration of different developmental cues in the regulation of plant cell differentiation.

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Publishing Authors By Initials

Y Gan,C Liu,H Yu,P Broun,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Development (Cambridge, England)

VOLUME: 134

Page Numbers: 2073-81

Journal Abbreviation: Development

ISSN: 0950-1991

DAY: 17

MONTH: Jun

YEAR: 2007

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 8701744

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate.

AFFILIATION: CNAP, Department of Biology, University of York, York, UK.

Country: England

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Development

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate Related Publications

• A reducing diet with moderate fat content.
• A study of the blood lipids in omnivorous animals.
• Attempts to produce leukemia experimentally with extracts of urine.
• Encouraging the right women to attend for cervical cancer screening: results from a targeted television campaign in Victoria, Australia.
• Genetic and molecular regulation by della proteins of trichome development in Arabidopsis.
• Integration of cytokinin and gibberellin signalling by Arabidopsis transcription factors GIS, ZFP8 and GIS2 in the regulation of epidermal cell fate.
• Primary carcinoma of the male urethra; case report.
• Relationship of hypertensive vascular disease to mortality in cases of St. Louis encephalitis.
• Treatment of hepatic cirrhosis.
• [The functional state of the posterior structures of the rabbit hypothalamus in experimental tuberculosis]