Journal
DEVELOPMENT
Volume 143, Issue 18, Pages 3259-3271Publisher
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.134080
Keywords
ABC model; Floral homeotic gene; MIKC-type MADS-domain transcription factor; Nucleosome; Pioneer transcription factor; Plant evolution
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [TH417/5-3]
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The floral quartet model of floral organ specification poses that different tetramers of MIKC-type MADS-domain transcription factors control gene expression and hence the identity of floral organs during development. Here, we provide a brief history of the floral quartet model and review several lines of recent evidence that support the model. We also describe how the model has been used in contemporary developmental and evolutionary biology to shed light on enigmatic topics such as the origin of land and flowering plants. Finally, we suggest a novel hypothesis describing how floral quartetlike complexes may interact with chromatin during target gene activation and repression.
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