Biotechnology Bulletin ›› 2025, Vol. 41 ›› Issue (1): 1-13.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0590

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Research Progress in Exogenous Hydrogen Peroxide(H2O2)Affecting Plant Growth and Physiological Metabolism under Abiotic Stress

YIN Yuan(), CHENG Shuang, LIU Ding-hao, DENG Xiao-xia, LI Kai-yue, WANG Jing-hong, LIN Ji-xiang()   

  1. College of Landscape Architecture, Northeast Forestry University, Harbin 150040
  • Received:2024-06-19 Online:2025-01-26 Published:2025-01-22
  • Contact: LIN Ji-xiang E-mail:2019224832@nefu.edu.cn;linjixiang@nefu.edu.cn

Abstract:

Hydrogen peroxide(H2O2)as an important signal molecule of reactive oxygen species(ROS), plays an important role in the process of plant stress resistance by regulating REDOX reaction and participating in cell response to various stress signals. It not only participates in and regulates the cell response to various stress signals, but also plays an important role in the process of REDOX reaction and stress resistance. Appropriate amount of exogenous H2O2 can alleviate the damage of abiotic stress to plants, and even accelerate their growth and development process, such as promoting seed germination and seedling growth. In addition, H2O2 is colorless, non-toxic, easy to decompose under strong light and other environmentally friendly characteristics. Therefore, it is particularly important to deeply explore the mechanism of exogenous H2O2's influence on plant growth and physiological metabolism under abiotic stress, which has important practical significance for widely applying H2O2 as an effective plant growth regulator to promote plant growth and improve crop yield and stress resistance in the future. Based on this, this paper induced and summarized the research progress in exogenous H2O2 regulating plant growth and physiology under abiotic stress, and reviewed the growth process of seed germination, seedling growth, flowering and fruit bearing, as well as the physiological response of photosynthesis and antioxidant defense system, aiming to clarify the response mechanism of plants and to provide a certain scientific basis for the wide application of H2O2 in agricultural production in the future.

Key words: exogenous hydrogen peroxide(H2O2), abiotic stress, plant growth regulator, growth, physiology