J Integr Plant Biol. ›› 2019, Vol. 61 ›› Issue (8): 917-923.DOI: 10.1111/jipb.12799

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AGAMOUS AND TERMINAL FLOWER controls floral organ identity and inflorescence development in Medicago truncatula

Butuo Zhu1†, Hui Li1,2†, Yifeng Hou3†, Pengcheng Zhang1, Xiuzhi Xia1, Na Wang1, Hui Wang1, Kirankumar S. Mysore4, Jiangqi Wen4, Yanxi Pei2, Lifang Niu1* and Hao Lin1*   

  1. 1Biotechnology Research Institute, the Chinese Academy of Agricultural Sciences, Beijing 100081, China
    2College of Life Science, Shanxi University, Taiyuan 030006, China
    3Institute of Genetics and Developmental Biology, the Chinese Academy of Sciences, Beijing 100101, China
    4Noble Research Institute, LLC, Ardmore, OK 73401, USA

    These authors contributed equally to this work.
    Email: Hao Lin (linhao@caas.cn, Dr. Lin is fully responsible for the distribution of all materials associated with this article); Lifang Niu (niulifang@caas.cn)
  • Received:2019-02-25 Accepted:2019-03-02 Online:2019-03-06 Published:2019-08-01


Angiosperms integrate a multitude of endogenous and environmental signals to control floral development, thereby ensuring reproductive success. Here, we report the identification of AGAMOUS AND TERMINAL FLOWER (AGTFL), a novel regulator of floral development in Medicago truncatula. Mutation of AGTFL led to the transformation of carpels and stamens into numerous sepals and petals and altered primary inflorescence identity. AGTFL encodes a nucleus‐localized protein containing a putative Myb/SANT‐like DNA‐binding domain and a PKc kinase domain. Molecular and genetic analyses revealed that AGTFL regulates the transcription of MtAGs and MtTFL1 to control floral organ identity and inflorescence development.

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