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Pod shattering resistance associated with domestication is mediated by a NAC gene in soybean

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  • Yang Dong

    (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Xia Yang

    (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences)

  • Jing Liu

    (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Bo-Han Wang

    (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Bo-Ling Liu

    (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences)

  • Yin-Zheng Wang

    (State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences)

Abstract

Loss of seed dispersal is a key agronomical trait targeted by ancient human selection and has been regarded as a milestone of crop domestication. In this study, in the legume crop soybean Glycine max (L.) Merr. which provides vegetable oils and proteins for humans, we show that the key cellular feature of the shattering-resistant trait lies in the excessively lignified fibre cap cells (FCC) with the abscission layer unchanged in the pod ventral suture. We demonstrate that a NAC (NAM, ATAF1/2 and CUC2) gene SHATTERING1-5 (SHAT1-5) functionally activates secondary wall biosynthesis and promotes the significant thickening of FCC secondary walls by expression at 15-fold the level of the wild allele, which is attributed to functional disruption of the upstream repressor. We show that strong artificial selection of SHAT1-5 has caused a severe selective sweep across ~116 kb on chromosome 16. This locus and regulation mechanism could be applicable to legume crop improvement.

Suggested Citation

  • Yang Dong & Xia Yang & Jing Liu & Bo-Han Wang & Bo-Ling Liu & Yin-Zheng Wang, 2014. "Pod shattering resistance associated with domestication is mediated by a NAC gene in soybean," Nature Communications, Nature, vol. 5(1), pages 1-11, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4352
    DOI: 10.1038/ncomms4352
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    Cited by:

    1. Xiaobing Liu & Bingjie Tu & Qiuying Zhang & Stephen J. Herbert, 2019. "Physiological and molecular aspects of pod shattering resistance in crops," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 55(3), pages 87-92.
    2. Ayda Krisnawati & Andy Soegianto & Budi Waluyo & Kuswanto, 2020. "The pod shattering resistance of soybean lines based on the shattering incidence and severity," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 56(3), pages 111-122.

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