Chinese Bulletin of Botany ›› 2023, Vol. 58 ›› Issue (3): 486-498.DOI: 10.11983/CBB22079

• SPECIAL TOPICS • Previous Articles     Next Articles

Research Advances on the Effect of High Temperature Stress on Plant Photosynthesis

Yongjiang Sun1, Qi Wang1, Qiwen Shao1, Zhiming Xin2, Huijie Xiao1, Jin Cheng1()   

  1. 1Beijing Forestry University, Beijing 100083, China
    2Experimental Center of Desert Forestry,Chinese Academy Forestry, Dengkou 015200, China
  • Received:2022-04-20 Accepted:2022-07-06 Online:2023-05-01 Published:2023-05-17
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Abstract: With the increase in atmospheric CO2 concentration caused by human activities, the global climate continues to warm. The past five years have been the hottest since the record of temperature. High temperature stress has become one of the main adverse factors affecting plant growth and development. Photosynthesis is the basis of life activities on earth, and it is highly sensitive to fluctuation in environmental factors. Understanding the response of plant photosynthesis under high temperature stress can provide a scientific basis for exploring the physiological and ecological mechanisms of plant tolerance to high temperature stress, cultivating new heat-tolerant varieties and taking reasonable measures to adapt to extreme climate in the future. In this paper, the effects of high temperature stress on the process of photosynthetic electron transfer and carbon fixation in plants were reviewed, and the effects of light on photosynthesis under high temperature stress were comprehensively analyzed from the perspective of light quality and light intensity. This paper also expounded the ways and mechanisms to improve the tolerance of plants to high temperature stress from the aspects of plants themselves and exogenous mitigating substances. Meanwhile, the research direction of plant photosynthesis response to high temperature stress and the application of multi-histology combined analysis in the comprehensive study of the mechanism of plant tolerance to high temperature stress were prospected.

Key words: high temperature stress, plant photosynthesis, response mechanism, defense mechanism