Chinese Bulletin of Botany ›› 2021, Vol. 56 ›› Issue (2): 138-141.DOI: 10.11983/CBB21040

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A Sweet Meet—New Mechanism on Nutrient and Hormone Regulation of Plant Growth

Xing Wen1,2, Lian Jin1,2, Hongwei Guo1,2,*()   

  1. 1Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Institute of Plant and Food Science, Southern University of Science and Technology, Shenzhen 518055, China
    2School of Life Scien- ces, Southern University of Science and Technology, Shenzhen 518055, China
  • Received:2021-02-24 Accepted:2021-02-26 Online:2021-03-01 Published:2021-03-17
  • Contact: Hongwei Guo

Abstract: Continuously exposed to a variety of environmental stresses, plants need to integrate internal and external information in order to achieve the purpose of adaption to environment. Among this process the perception and regulation of the energy state and soluble sugar level are of great importance. However, the molecular mechanisms underlying the integration of sugar signaling, nutrient metabolism and stress response in plants remain unclear. Recently, a team led by Prof. Yan Xiong from Fujian Agriculture and Forestry University (FAFU) have discovered that TOR kinase, the central player in metabolic signaling pathways, can directly bind and phosphorylate the core component of ethylene signaling EIN2 protein, forming a regulatory axis to coordinate TOR and ethylene signaling. The two kinases TOR and CTR1 precisely regulates distinct phosphorylation sites on EIN2, respectively, which makes EIN2 become a coordination hub of glucose signal and ethylene signal, and precisely control plant growth and development.

Key words: glucose, ethylene, TOR, EIN2, phosphorylation