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ASYMMETRIC LEAVES2-LIKE1 gene, a member of the AS2/LOB family, controls proximal-distal patterning in Arabidopsis petals.
ASYMMETRIC LEAVES2-LIKE1 gene, a member of the AS2/LOB family, controls proximal-distal patterning in Arabidopsis petals.
- Source :
-
Plant molecular biology [Plant Mol Biol] 2005 Mar; Vol. 57 (4), pp. 559-75. - Publication Year :
- 2005
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Abstract
- The formation and the development of the floral organs require an intercalate expression of organ-specific genes. At the same time, meristem-specific genes are repressed to complete the differentiation of the organs in the floral whorls. In an Arabidopsis activation tagging population, a mutant affected in inflorescence architecture was identified. This gain-of-function mutant, designated downwards siliques1 (dsl1-D), has shorter internodes and the lateral organs such as flowers are bending downwards, similar to the loss-of-function brevipedicellus (bp) mutant. The affected gene in dsl1-D appeared to be ASYMMETRIC LEAVES2-LIKE1 (ASL1)/LATERAL ORGAN BOUNDARIES domain gene 36 (LBD36), which is a member of the ASYMMETRIC LEAVES2 (AS2)/LATERAL ORGAN BOUNDARIES (LOB) domain gene family. Analysis of the loss-of-function mutant asl1/lbd36 did not show morphological aberration. Double mutant analysis of asl1/lbd36 together with as2, the ASL1/LBD36 closest homologue, demonstrates that these two members of the AS2/LOB family act partially redundant to control cell fate determination in Arabidopsis petals. Moreover, molecular analysis revealed that overexpression of ASL1/LBD36 leads to repression of the homeobox gene BP, which supports the model that an antagonistic relationship between ASL/LBD and homeobox members is required for the differentiation of lateral organs.
- Subjects :
- Arabidopsis growth & development
Flowers growth & development
Flowers ultrastructure
Gene Expression Regulation, Plant
Microscopy, Electron, Scanning
Mutation
Phenotype
Plant Epidermis cytology
Plant Epidermis ultrastructure
Plants, Genetically Modified
Suppression, Genetic
Arabidopsis genetics
Arabidopsis Proteins genetics
Bacterial Proteins genetics
Flowers genetics
Subjects
Details
- Language :
- English
- ISSN :
- 0167-4412
- Volume :
- 57
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Plant molecular biology
- Publication Type :
- Academic Journal
- Accession number :
- 15821980
- Full Text :
- https://doi.org/10.1007/s11103-005-0698-4