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Tiller Number1 encodes an ankyrin repeat protein that controls tillering in bread wheat

Author

Listed:
  • Chunhao Dong

    (Chinese Academy of Agricultural Sciences)

  • Lichao Zhang

    (Chinese Academy of Agricultural Sciences)

  • Qiang Zhang

    (Chinese Academy of Agricultural Sciences
    China National Rice Research Institute)

  • Yuxin Yang

    (Chinese Academy of Agricultural Sciences)

  • Danping Li

    (Chinese Academy of Agricultural Sciences)

  • Zhencheng Xie

    (Chinese Academy of Agricultural Sciences)

  • Guoqing Cui

    (Chinese Academy of Agricultural Sciences)

  • Yaoyu Chen

    (Chinese Academy of Agricultural Sciences)

  • Lifen Wu

    (Chinese Academy of Agricultural Sciences)

  • Zhan Li

    (Chinese Academy of Agricultural Sciences)

  • Guoxiang Liu

    (Chinese Academy of Agricultural Sciences)

  • Xueying Zhang

    (Chinese Academy of Agricultural Sciences)

  • Cuimei Liu

    (Chinese Academy of Sciences)

  • Jinfang Chu

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

  • Guangyao Zhao

    (Chinese Academy of Agricultural Sciences)

  • Chuan Xia

    (Chinese Academy of Agricultural Sciences)

  • Jizeng Jia

    (Chinese Academy of Agricultural Sciences)

  • Jiaqiang Sun

    (Chinese Academy of Agricultural Sciences)

  • Xiuying Kong

    (Chinese Academy of Agricultural Sciences)

  • Xu Liu

    (Chinese Academy of Agricultural Sciences)

Abstract

Wheat (Triticum aestivum L.) is a major staple food for more than one-third of the world’s population. Tiller number is an important agronomic trait in wheat, but only few related genes have been cloned. Here, we isolate a wheat mutant, tiller number1 (tn1), with much fewer tillers. We clone the TN1 gene via map-based cloning: TN1 encodes an ankyrin repeat protein with a transmembrane domain (ANK-TM). We show that a single amino acid substitution in the third conserved ankyrin repeat domain causes the decreased tiller number of tn1 mutant plants. Resequencing and haplotype analysis indicate that TN1 is conserved in wheat landraces and modern cultivars. Further, we reveal that the expression level of the abscisic acid (ABA) biosynthetic gene TaNCED3 and ABA content are significantly increased in the shoot base and tiller bud of the tn1 mutants; TN1 but not tn1 could inhibit the binding of TaPYL to TaPP2C via direct interaction with TaPYL. Taken together, we clone a key wheat tiller number regulatory gene TN1, which promotes tiller bud outgrowth probably through inhibiting ABA biosynthesis and signaling.

Suggested Citation

  • Chunhao Dong & Lichao Zhang & Qiang Zhang & Yuxin Yang & Danping Li & Zhencheng Xie & Guoqing Cui & Yaoyu Chen & Lifen Wu & Zhan Li & Guoxiang Liu & Xueying Zhang & Cuimei Liu & Jinfang Chu & Guangyao, 2023. "Tiller Number1 encodes an ankyrin repeat protein that controls tillering in bread wheat," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-36271-z
    DOI: 10.1038/s41467-023-36271-z
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    References listed on IDEAS

    as
    1. Xueyong Li & Qian Qian & Zhiming Fu & Yonghong Wang & Guosheng Xiong & Dali Zeng & Xiaoqun Wang & Xinfang Liu & Sheng Teng & Fujimoto Hiroshi & Ming Yuan & Da Luo & Bin Han & Jiayang Li, 2003. "Control of tillering in rice," Nature, Nature, vol. 422(6932), pages 618-621, April.
    2. Huan Wang & Shenghao Zou & Yiwen Li & Fanyun Lin & Dingzhong Tang, 2020. "An ankyrin-repeat and WRKY-domain-containing immune receptor confers stripe rust resistance in wheat," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
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