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Subfunctionalisation and self-repression of duplicated E1 homologues finetunes soybean flowering and adaptation

Author

Listed:
  • Chao Fang

    (Guangzhou University, Guangzhou Higher Education Mega Center
    Chinese Academy of Sciences
    China Agricultural University)

  • Zhihui Sun

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Shichen Li

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Tong Su

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Lingshuang Wang

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Lidong Dong

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Haiyang Li

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Lanxin Li

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Lingping Kong

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Zhiquan Yang

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Xiaoya Lin

    (Guangzhou University, Guangzhou Higher Education Mega Center)

  • Alibek Zatybekov

    (Institute of Plant Biology and Biotechnology)

  • Baohui Liu

    (Guangzhou University, Guangzhou Higher Education Mega Center
    Chinese Academy of Sciences)

  • Fanjiang Kong

    (Guangzhou University, Guangzhou Higher Education Mega Center
    Chinese Academy of Sciences
    China Agricultural University)

  • Sijia Lu

    (Guangzhou University, Guangzhou Higher Education Mega Center)

Abstract

Soybean is a photoperiod-sensitive staple crop. Its photoperiodic flowering has major consequences for latitudinal adaptation and grain yield. Here, we identify and characterise a flowering locus named Time of flower 4b (Tof4b), which encodes E1-Like b (E1Lb), a homologue of the key soybean floral repressor E1. Tof4b protein physically associates with the promoters of two FLOWERING LOCUS T (FT) genes to repress their transcription and delay flowering to impart soybean adaptation to high latitudes. Three E1 homologues undergo subfunctionalisation and show differential subcellular localisation. Moreover, they all possess self-repression capability and each suppresses the two homologous counterparts. Subfunctionalisation and the transcriptional regulation of E1 genes collectively finetune flowering time and high-latitude adaptation in soybean. We propose a model for the functional fate of the three E1 genes after the soybean whole-genome duplication events, refine the molecular mechanisms underlying high-latitude adaption, and provide a potential molecular-breeding resource.

Suggested Citation

  • Chao Fang & Zhihui Sun & Shichen Li & Tong Su & Lingshuang Wang & Lidong Dong & Haiyang Li & Lanxin Li & Lingping Kong & Zhiquan Yang & Xiaoya Lin & Alibek Zatybekov & Baohui Liu & Fanjiang Kong & Sij, 2024. "Subfunctionalisation and self-repression of duplicated E1 homologues finetunes soybean flowering and adaptation," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50623-3
    DOI: 10.1038/s41467-024-50623-3
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    References listed on IDEAS

    as
    1. Mohamed A. El-Brolosy & Zacharias Kontarakis & Andrea Rossi & Carsten Kuenne & Stefan Günther & Nana Fukuda & Khrievono Kikhi & Giulia L. M. Boezio & Carter M. Takacs & Shih-Lei Lai & Ryuichi Fukuda &, 2019. "Genetic compensation triggered by mutant mRNA degradation," Nature, Nature, vol. 568(7751), pages 193-197, April.
    2. Lidong Dong & Chao Fang & Qun Cheng & Tong Su & Kun Kou & Lingping Kong & Chunbao Zhang & Haiyang Li & Zhihong Hou & Yuhang Zhang & Liyu Chen & Lin Yue & Lingshuang Wang & Kai Wang & Yongli Li & Zhuor, 2021. "Genetic basis and adaptation trajectory of soybean from its temperate origin to tropics," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
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