Advances in the research on the resistance of conifer resin to pests

Author of the article:CAO Yi-Xia^1,2,3;ZAHNG Zhen³;LIU Sui-Cun⁴;LI Lian-Zhi⁴;LI Dian-Mo¹

Author's Workplace：1..State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology，Chinese Academy of Sciences，Beijing 100101, China；2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China；3. The Research Institute of Forest Ecology，Environment and Protection，Chinese Academy of Forestry， Beijing 100091, China； 4. Shanxi Academy of Forestry， Taiyuan 030012，China

Key Words：conifer resin， resinbased resistance， environment， biosynthesis

Abstract：Pest infestation and associated fungal infection are a serious disease problem in conifers, which have evolved elaborate, constitutive and inducible, terpene-based defense mechanisms to deter insect pests and their symbiotic fungal pathogens. This process involves the secretion of oleoresin, a complex mixture of monoterpenes, sesquiterpenes and diterpenoid acids. The article detailedly presents resin’s composition and its defensive function, and analyses the variation of resin’s resistance depending on environmental factor. Then route and common regulation of inducible terpene biosynthesis and relevant genes identification are provided.，and the strategies and prospects for conifer protection with improving resin-based resistance are discussed.