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Early selection of bZIP73 facilitated adaptation of japonica rice to cold climates

Author

Listed:
  • Citao Liu

    (Chinese Academy of Sciences)

  • Shujun Ou

    (Chinese Academy of Sciences
    Michigan State University)

  • Bigang Mao

    (China National Hybrid Rice Research and Development Center)

  • Jiuyou Tang

    (Chinese Academy of Sciences)

  • Wei Wang

    (Chinese Academy of Sciences)

  • Hongru Wang

    (Chinese Academy of Sciences)

  • Shouyun Cao

    (Chinese Academy of Sciences)

  • Michael R. Schläppi

    (Marquette University)

  • Bingran Zhao

    (China National Hybrid Rice Research and Development Center)

  • Guoying Xiao

    (Institute of Subtropical Agriculture Chinese Academy of Sciences)

  • Xiping Wang

    (Beijing Normal University)

  • Chengcai Chu

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

Abstract

Cold stress is a major factor limiting production and geographic distribution of rice (Oryza sativa). Although the growth range of japonica subspecies has expanded northward compared to modern wild rice (O. rufipogon), the molecular basis of the adaptation remains unclear. Here we report bZIP73, a bZIP transcription factor-coding gene with only one functional polymorphism (+511 G>A) between the two subspecies japonica and indica, may have facilitated japonica adaptation to cold climates. We show the japonica version of bZIP73 (bZIP73Jap) interacts with bZIP71 and modulates ABA levels and ROS homeostasis. Evolutionary and population genetic analyses suggest bZIP73 has undergone balancing selection; the bZIP73Jap allele has firstly selected from standing variations in wild rice and likely facilitated cold climate adaptation during initial japonica domestication, while the indica allele bZIP73Ind was subsequently selected for reasons that remain unclear. Our findings reveal early selection of bZIP73Jap may have facilitated climate adaptation of primitive rice germplasms.

Suggested Citation

  • Citao Liu & Shujun Ou & Bigang Mao & Jiuyou Tang & Wei Wang & Hongru Wang & Shouyun Cao & Michael R. Schläppi & Bingran Zhao & Guoying Xiao & Xiping Wang & Chengcai Chu, 2018. "Early selection of bZIP73 facilitated adaptation of japonica rice to cold climates," Nature Communications, Nature, vol. 9(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05753-w
    DOI: 10.1038/s41467-018-05753-w
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    Cited by:

    1. Huaijun Wang & Tiantian Ye & Zilong Guo & Yilong Yao & Haifu Tu & Pengfei Wang & Yu Zhang & Yao Wang & Xiaokai Li & Bingchen Li & Haiyan Xiong & Xuelei Lai & Lizhong Xiong, 2024. "A double-stranded RNA binding protein enhances drought resistance via protein phase separation in rice," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    2. Chuanzhong Zhang & Hongru Wang & Xiaojie Tian & Xinyan Lin & Yunfei Han & Zhongmin Han & Hanjing Sha & Jia Liu & Jianfeng Liu & Jian Zhang & Qingyun Bu & Jun Fang, 2024. "A transposon insertion in the promoter of OsUBC12 enhances cold tolerance during japonica rice germination," Nature Communications, Nature, vol. 15(1), pages 1-16, December.
    3. Xin Dong & Tianyi Zhang & Xiaoguang Yang & Tao Li, 2023. "Breeding priorities for rice adaptation to climate change in Northeast China," Climatic Change, Springer, vol. 176(6), pages 1-19, June.

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