| AINTEGUMENTA promotes petal identity and acts as a negative regulator of AGAMOUS. | |
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MedLine Citation:
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PMID: 10948255 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Arabidopsis AINTEGUMENTA (ANT) gene has been shown previously to be involved in ovule development and in the initiation and growth of floral organs. Here, we show that ANT acts in additional processes during flower development, including repression of AGAMOUS (AG) in second whorl cells, promotion of petal epidermal cell identity, and gynoecium development. Analyses of ap2-1 ant-6 double mutants reveal that ANT acts redundantly with AP2 to repress AG in second whorl cells. The abaxial surface of ant petals contains features such as stomata and elongated, interdigitated cells that are not present on wild-type petals. The loss of petal identity in these second whorl cells does not result from ectopic AG expression, suggesting that ANT acts in a pathway promoting petal cell identity that is independent of its role in repression of AG. These data suggest that ANT may function as a class A gene. |
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Authors:
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B A Krizek; V Prost; A Macias |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: The Plant cell Volume: 12 ISSN: 1040-4651 ISO Abbreviation: Plant Cell Publication Date: 2000 Aug |
Date Detail:
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Created Date: 2000-09-19 Completed Date: 2000-12-14 Revised Date: 2010-09-14 |
Medline Journal Info:
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Nlm Unique ID: 9208688 Medline TA: Plant Cell Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1357-66 Citation Subset: IM |
Affiliation:
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Department of Biological Sciences, University of South Carolina, Columbia, South Carolina 29208, USA. krizek@sc.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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AGAMOUS Protein, Arabidopsis Alleles Arabidopsis / cytology, genetics, growth & development*, ultrastructure Arabidopsis Proteins* Cell Differentiation DNA-Binding Proteins / antagonists & inhibitors*, genetics, metabolism Evolution Gene Expression Regulation, Developmental Gene Expression Regulation, Plant* Genes, Plant / genetics Homeodomain Proteins / genetics, metabolism MADS Domain Proteins Microscopy, Electron, Scanning Mutation / genetics Nuclear Proteins / genetics, metabolism Phenotype Plant Epidermis / cytology, metabolism Plant Proteins / antagonists & inhibitors*, genetics, metabolism* Plant Structures / cytology, genetics, growth & development*, ultrastructure RNA, Plant / analysis, genetics Repressor Proteins / genetics, metabolism* Signal Transduction Transcription Factors / genetics, metabolism* |
| Chemical | |
Reg. No./Substance:
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0/AGAMOUS Protein, Arabidopsis; 0/AINTEGUMENTA protein, Arabidopsis; 0/AP1 protein, Arabidopsis; 0/APETALA2 protein, Arabidopsis; 0/Arabidopsis Proteins; 0/DNA-Binding Proteins; 0/Homeodomain Proteins; 0/MADS Domain Proteins; 0/Nuclear Proteins; 0/Plant Proteins; 0/RNA, Plant; 0/Repressor Proteins; 0/Transcription Factors |
| Comments/Corrections | |
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