Abstract
Mutations in CUC1 and CUC2 (for CUP-SHAPED COTYLEDON), which are newly identified genes of Arabidopsis, caused defects in the separation of cotyledons (embryonic organs), sepals, and stamens (floral organs) as well as in the formation of shoot apical meristems. These defects were most apparent in the double mutant. Phenotypes of the mutants suggest a common mechanism for separating adjacent organs within the same whorl in both embryos and flowers. We cloned the CUC2 gene and found that the encoded protein was homologous to the petunia NO APICAL MERISTEM (NAM) protein, which is thought to act in the development of embryos and flowers.
MeSH Terms
Amino Acid Sequence
Arabidopsis/genetics
Arabidopsis Proteins
Chromosome Mapping
Cloning, Molecular
Cotyledon/genetics
DNA Mutational Analysis
DNA Transposable Elements
DNA, Plant/chemistry
Gene Expression Regulation, Developmental
Genes, Plant
Molecular Sequence Data
Mutation
Phenotype
Plant Proteins/chemistry,genetics
Chemicals
Arabidopsis Proteins
CUC2 protein, Arabidopsis
DNA Transposable Elements
DNA, Plant
NAM protein, Petunia hybrida
Plant Proteins
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Aida M
Department of Botany, Graduate School of Science, Kyoto University, Japan.
Ishida T
Fukaki H
Fujisawa H
Tasaka M
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