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Effects of the plant volatile trans‑2-hexenal on the dispersal ability, nutrient metabolism and enzymatic activities of Bursaphelenchus xylophilus
- Zhao, Yunhe, Xu, Shuangyu, Lu, Hongbao, Zhang, Daxia, Liu, Feng, Lin, Jin, Zhou, Chenggang, Mu, Wei
- Pesticide biochemistry and physiology 2017 v.143 pp. 147-153
- Bursaphelenchus xylophilus, digestive enzymes, enzyme activity, esterases, fumigants, glutathione transferase, metabolism, nutrients, vascular wilt
- Bursaphelenchus xylophilus causes pine wilt disease (PWD), which severely damages pine species. The plant volatile trans‑2-hexenal has strong activity against nematodes, although the precise mechanism of this inhibitory action remains unclear. In this paper, the fumigant effects of the LC10 and LC30 of trans‑2-hexenal on B. xylophilus were demonstrated. The trans‑2-hexenal treatments significantly inhibited the dispersal ability of nematodes. The results also indicated that trans‑2-hexenal affects the metabolism of nutrients and the activity of digestive enzymes. Among detoxifying enzymes, after treatment with trans‑2-hexenal, glutathione S-transferase activity increased significantly and general esterase activity decreased significantly. Based on these results, trans‑2-hexenal disturbs the normal physiological and biochemical activities of this nematode. These results provide valuable insight into the nematicidal mechanisms of trans‑2-hexenal.