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ABERRANT PANICLE ORGANIZATION 2/RFL, the rice ortholog of Arabidopsis LEAFY, suppresses the transition from inflorescence meristem to floral meristem through interaction with APO1.
- Source :
-
Plant Journal . Jan2012, Vol. 69 Issue 1, p168-180. 13p. - Publication Year :
- 2012
-
Abstract
- Summary The temporal and spatial control of meristem identity is a key element in plant development. To better understand the molecular mechanisms that regulate inflorescence and flower architecture, we characterized the rice aberrant panicle organization 2 ( apo2) mutant which exhibits small panicles with reduced number of primary branches due to the precocious formation of spikelet meristems. The apo2 mutants also display a shortened plastochron in the vegetative phase, late flowering, aberrant floral organ identities and loss of floral meristem determinacy. Map-based cloning revealed that APO2 is identical to previously reported RFL gene, the rice ortholog of the Arabidopsis LEAFY ( LFY) gene. Further analysis indicated that APO2/RFL and APO1, the rice ortholog of Arabidopsis UNUSUAL FLORAL ORGANS, act cooperatively to control inflorescence and flower development. The present study revealed functional differences between APO2/RFL and LFY. In particular, APO2/RFL and LFY act oppositely on inflorescence development. Therefore, the genetic mechanisms for controlling inflorescence architecture have evolutionarily diverged between rice (monocots) and Arabidopsis (eudicots). [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09607412
- Volume :
- 69
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Plant Journal
- Publication Type :
- Academic Journal
- Accession number :
- 69947385
- Full Text :
- https://doi.org/10.1111/j.1365-313X.2011.04781.x