Biochemical substances in the transmission of Bursaphelenchus xylophilus
Pine wilt disease(PWD)is one of the main causes of serious damage to pine forest resources in China.The spread of PWD is mainly caused by the infection of healthy pine trees by Bursaphelenchus xylophilus parasitic on vectors.In this paper,the biochemical substances in the transmission of B.xylophilus carried by the vector insect Monochamus alterna-tus were introduced.Fatty acids,volatile terpenes,hydrocarbons and CO2 play an important role in the process of B.xylo-philus entering the vector insect;In the process of searching for hosts,vector insects will be affected by volatile terpenes and hydrocarbons produced by host plants;The content of neutral lipids in B.xylophilus is the chemical switch that determines the release of volatiles from vector insects.
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