Acta Agriculturae Zhejiangensis ›› 2025, Vol. 37 ›› Issue (7): 1595-1604.DOI: 10.3969/j.issn.1004-1524.20240870

• Review • Previous Articles    

Current research status and future perspectives on the effects of microplastics on plants and the molecular biological mechanisms of plant hormones in resistance to microplastics

ZHAO Hongyu1,2(), ZHOU Yujie3, LI Jianzhong4, ZHENG Han1,2, BI Ji’an5, YU Chulang6, ZHOU Yuhang2,6, HOU Fan7, DAI Binfeng8, ZHONG Liequan8, YAN Chengqi5, ZHANG Haipeng1, YANG Yong2, CHEN Jianping6,*(), WANG Chengyu1,*()   

  1. 1. College of Agronomy, Anhui Agricultural University, Hefei 230036, China
    2. National Key Laboratory of Agricultural Product Quality and Safety, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs of China and Zhejiang Province, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    3. Zhuji Agricultural Technology Extension Center, Zhuji 311800, Zhejiang, China
    4. Qujiang District Agricultural Technology Extension Center, Quzhou 323000, Zhejiang, China
    5. Institute of Crop Research, Ningbo Academy of Agricultural Sciences, Ningbo 315000, Zhejiang, China
    6. National Key Laboratory of Agricultural Product Quality and Safety, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Rural Affairs of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, Zhejiang, China
    7. Zhejiang Wuwangnong Seeds Shareholding Co., Ltd., Hangzhou 311200, China
    8. Taizhou Agroecological Protection and Quality Safety Center, Taizhou 317000, Zhejiang, China
  • Received:2024-10-15 Online:2025-07-25 Published:2025-08-20

Abstract:

In recent years, the continuous growth in the use of plastic products has led to an increasingly prominent problem of microplastic pollution. Due to their non-biodegradability, small particle size, wide distribution, and easy uptake by organisms, microplastics pose a serious threat to the natural environment. Among them, the pollution risk of microplastics to terrestrial ecosystems, especially agricultural ecosystems, is receiving increasing attention. Higher plants, as an indispensable part of the ecosystem, play a key role in maintaining ecological balance. This review summarizes the definition, sources, and entry pathways of microplastics into plants, comprehensively discusses on the specific impacts of microplastics on the growth and development of higher plants, and explores the physiological responses of plants to microplastic stress and their regulatory effects on plant hormones. For example, the entry of microplastics into plants may lead to the down-regulation of the expression of the key gene CDC2 that controls mitosis, disrupting the plant growth cycle; at the same time, it affects the expression of key genes such as GDT1, GDH2 and GAD involved in the plant tricarboxylic acid cycle, and reduces the rate of adenosine triphosphate (ATP) synthesis, thereby affecting photosynthesis. The down-regulation of these gene expressions ultimately damages the essential nutrient metabolism processes of plants. In addition, this article also analyzes the mechanism by which microplastics affect plant hormones and the responses of the plant antioxidant system. These studies contribute to a deeper understanding of the complex effects of microplastics on plant biology. On this basis, future research directions are prospected, and the potential ecological risks of microplastic pollution are evaluated. By integrating the current understanding of the impact of microplastics on plant biology, this study aims to provide a scientific basis for the prevention, control and management of microplastic pollution, and contribute to the sustainable development of ecosystems. In summary, this review not only summarizes the current research on the effects of microplastics on the growth and development of higher plants but also proposes new research ideas, providing an important reference for addressing the challenges of microplastic pollution.

Key words: microplastic, plant, hormone, environmental pollution

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