Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (6): 130-136.doi: 10.11924/j.issn.1000-6850.casb2020-0166

Special Issue: 生物技术

Previous Articles     Next Articles

The Insect-resistance Physiology of Plants: A Review

Yang Jinrui(), Xiao Guanli()   

  1. College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201
  • Received:2020-06-11 Revised:2020-08-26 Online:2021-02-25 Published:2021-02-24
  • Contact: Xiao Guanli E-mail:15087707991@163.com;glxiao9@163.com

Abstract:

Pests are an important factor that seriously affects the yield and quality of crops. An in-depth study on the interaction between plants and pests can provide theoretical reference for practitioners to explore the suitable measures for insect resistance in agricultural production. Based on reviewing relevant research literature, this article analyzes the defense mechanism of plants against pests and the specific measures taken by insects to adapt to plant defense responses, and reviews the research status of plant resistance physiology against insects. (1) Plants can reduce their attractiveness to pests by changing their nutrient content, and nutrients can also participate in the defense response to improve plant’s resistance against insects. (2) Plant secondary metabolites have insect-resistance role, which affect the behavior, feeding and digestion of pests, and achieve the resistance against pests. (3) Plant defense enzymes are involved in the occurrence of insect resistance reactions and maintain the normal growth and metabolism balance in the plant to improve plant resistance to insects. (4) Plant hormone signal pathways contribute to the expression of plant defense genes, the occurrence of defense responses, and the production of insect-resistance substances, thereby enhancing the resistance of host plants against insect. (5) Insects can use their own secretions and carry pathogens to adapt to plant cell walls and inhibit the expression of plant defense responses. In addition, the insect's own detoxification system can also reduce the adverse effects of insect-resistance substances produced by plants. At last, the existing problems and future research directions are also discussed in this paper.

Key words: plant, insect resistance, pest stress, induced defense, insect

CLC Number: