Cited by 1,486Plant Molecular Biology ResearchDevelopmental Biology and Gene RegulationPlant Parasitism and Resistance

Genes involved in organ separation in Arabidopsis: an analysis of the cup-shaped cotyledon mutant.

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Aida, M, Ishida, T, Fukaki, H, Fujisawa, H, Tasaka, M·1997·The Plant Cell

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.

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Crossref · 10.1105/tpc.9.6.841

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  • NAM/CUC family genes are consistently expressed in boundary zones and their loss of function causes fusion of adjacent organs that would normally be separated.

    “These genes are consistently expressed in boundary zones and their loss of function causes fusion of adjacent organs (e.g.cotyledons, floral organs, and ovules) that would normally be separated (Souer et al., 1996;Aida et al., 1997;Takada et al., 2001;Vroemen et al., 2003;Weir et al., 2004; Fig. 1e,f).”
  • Loss of CUC1 and CUC2 gene function causes a lack of embryonic SAM.

    “Loss of CUC1 and CUC2 gene function causes a lack of embryonic SAM (Aida et al., 1997).”
  • CUC1 and CUC2 are required for the formation of the inter-cotyledon boundary zone and the SAM.

    “Very important are the NAM/CUC genes CUC1 and CUC2, required for the formation of the inter-cotyledon boundary zone and the SAM.”
  • Loss-of-function mutants of CUC1-3 show fusions of various organs.

    “| CUC1-3 | Gob (tomato (Solanum | NAC | Fusions of various organs, | SAM and lateral organs | Souer et al. (1996); Aida et al. |”
  • The Arabidopsis CUC1, CUC2 and CUC3 genes encode NAC protein family proteins.

    “| CUC1-3 | Gob (tomato (Solanum | NAC | Fusions of various organs, | SAM and lateral organs | Souer et al. (1996); Aida et al. |”

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Authors
Aida, M., Ishida, T., Fukaki, H., Fujisawa, H., & Tasaka, M.
Affiliations
Kyoto University (JP)
Venue
The Plant Cell
Published
1997-06
Volume
9
Issue
6
Pages
841-857
ISSN
  • 1040-4651 (ISSN-L)
  • 1532-298X
OpenAlex
W1972538870
Cited by
1,486
References
18
Citations by year
2026: 46 · 2025: 55 · 2024: 70 · 2023: 65 · 2022: 89 · 2021: 90 · 2020: 72 · 2019: 65 · 2018: 59 · 2017: 69 · 2016: 49 · 2015: 64 · 2014: 62 · 2013: 56 · 2012: 58
FWCI
24.44
Type
journal article
Language
en
Open access
Locations
  • The Plant Cell (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
Keywords
CUC1, CUC2, Arabidopsis thaliana, shoot apical meristem, floral organ development, gene cloning, double mutants
MeSH terms
Amino Acid Sequence, Chromosome Mapping, Cloning, Molecular, DNA Transposable Elements, DNA Mutational Analysis, Molecular Sequence Data, Mutation, Phenotype, Plant Proteins, Genes, Plant, Arabidopsis, Gene Expression Regulation, Developmental, Cotyledon, DNA, Plant, Arabidopsis Proteins

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