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B and C floral organ identity functions require SEPALLATA MADS-box genes

Author

Listed:
  • Soraya Pelaz

    (Section of Cell and Developmental Biology)

  • Gary S. Ditta

    (Section of Cell and Developmental Biology)

  • Elvira Baumann

    (Max-Planck-Institut für Züchtungsforschung)

  • Ellen Wisman

    (Max-Planck-Institut für Züchtungsforschung)

  • Martin F. Yanofsky

    (Section of Cell and Developmental Biology)

Abstract

Abnormal flowers have been recognized for thousands of years, but only in the past decade have the mysteries of flower development begun to unfold. Among these mysteries is the differentiation of four distinct organ types (sepals, petals, stamens and carpels), each of which may be a modified leaf1. A landmark accomplishment in plant developmental biology is the ABC model of flower organ identity2,3. This simple model provides a conceptual framework for explaining how the individual and combined activities of the ABC genes produce the four organ types of the typical eudicot flower. Here we show that the activities of the B and C organ-identity genes require the activities of three closely related and functionally redundant MADS-box genes, SEPALLATA1/2/3 (SEP1/2/3). Triple mutant Arabidopsis plants lacking the activity of all three SEP genes produce flowers in which all organs develop as sepals. Thus SEP1/2/3 are a class of organ-identity genes that is required for development of petals, stamens and carpels.

Suggested Citation

  • Soraya Pelaz & Gary S. Ditta & Elvira Baumann & Ellen Wisman & Martin F. Yanofsky, 2000. "B and C floral organ identity functions require SEPALLATA MADS-box genes," Nature, Nature, vol. 405(6783), pages 200-203, May.
    • Handle: RePEc:nat:nature:v:405:y:2000:i:6783:d:10.1038_35012103
    DOI: 10.1038/35012103
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    Cited by:

    1. Ki-Hong Jung & Jinwon Lee & Chris Dardick & Young-Su Seo & Peijian Cao & Patrick Canlas & Jirapa Phetsom & Xia Xu & Shu Ouyang & Kyungsook An & Yun-Ja Cho & Geun-Cheol Lee & Yoosook Lee & Gynheung An , 2008. "Identification and Functional Analysis of Light-Responsive Unique Genes and Gene Family Members in Rice," PLOS Genetics, Public Library of Science, vol. 4(8), pages 1-19, August.
    2. Zainab Majed ALMUTAIRI, 2017. "Expression profiling of certain MADS-box genes in Arabidopsis thaliana plant treated with silver nanoparticles," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 53(1), pages 30-36.

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