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Altered circadian rhythms regulate growth vigour in hybrids and allopolyploids

Author

Listed:
  • Zhongfu Ni

    (Section of Molecular Cell and Developmental Biology,
    Present address: Department of Plant Genetics and Breeding, China Agricultural University, Yuanmingyuan Xilu No. 2, Beijing, 100094, China.)

  • Eun-Deok Kim

    (Section of Molecular Cell and Developmental Biology,)

  • Misook Ha

    (Section of Molecular Cell and Developmental Biology,
    Institute for Cellular and Molecular Biology,
    Center for Computational Biology and Bioinformatics, and,)

  • Erika Lackey

    (Section of Molecular Cell and Developmental Biology,)

  • Jianxin Liu

    (Section of Molecular Cell and Developmental Biology,)

  • Yirong Zhang

    (Section of Molecular Cell and Developmental Biology,
    Present address: Department of Plant Genetics and Breeding, China Agricultural University, Yuanmingyuan Xilu No. 2, Beijing, 100094, China.)

  • Qixin Sun

    (China Agricultural University, Yuanmingyuan Xilu No. 2, Beijing, 100094, China)

  • Z. Jeffrey Chen

    (Section of Molecular Cell and Developmental Biology,
    Institute for Cellular and Molecular Biology,
    Center for Computational Biology and Bioinformatics, and,
    Section of Integrative Biology, The University of Texas at Austin, One University Station, A-4800, Austin, Texas 78712, USA)

Abstract

Growing around the clock Polyploidy, or whole-genome duplication, is an evolutionary innovation common in plants. Several major crops, including wheat, cotton and canola, are allopolyploids, containing two or more divergent genomes and some plants exist as intra- and interspecific hybrids. Such plants can display vigorous growth. A study of hybrids of Arabidopsis thaliana and A. arenosa sheds light on the mechanistic basis of this increased vigour. Epigenetic modulation of circadian clock regulators is shown to mediate the expression of genes in photosynthetic and starch metabolic pathways in allopolyploids. As a result, they accumulate more chlorophyll, produce more starch, and grow larger than the parents. Thus the hybrid and allopolyploid plants appear to gain advantages from the control of physiological and metabolic pathways by reversibly adjusting circadian clock regulators to make better use of the daylight hours.

Suggested Citation

  • Zhongfu Ni & Eun-Deok Kim & Misook Ha & Erika Lackey & Jianxin Liu & Yirong Zhang & Qixin Sun & Z. Jeffrey Chen, 2009. "Altered circadian rhythms regulate growth vigour in hybrids and allopolyploids," Nature, Nature, vol. 457(7227), pages 327-331, January.
    • Handle: RePEc:nat:nature:v:457:y:2009:i:7227:d:10.1038_nature07523
    DOI: 10.1038/nature07523
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    Cited by:

    1. Riry Prihatini & Mohamad Puad Abdullah & Tuan Abdul Rashid bin Tuan Abdullah & Ismail Said & Halil Hussin & Norihan Mohamad Saleh, 2017. "Extremely low frequency electromagnetic field generator suitable for plant in vitro studies," Research in Agricultural Engineering, Czech Academy of Agricultural Sciences, vol. 63(4), pages 180-186.
    2. G. Qiao & X.P. Wen & L.F. Yu & X.B. Ji, 2011. "The enhancement of drought tolerance for pigeon pea inoculated by arbuscular mycorrhizae fungi," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(12), pages 541-546.

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