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PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY · 2017 · IF 2.59

Effects of the plant volatile trans‑2-hexenal on the dispersal ability, nutrient metabolism and enzymatic activities of Bursaphelenchus xylophilus

Yunhe Zhao,Shuangyu Xu,Hongbao Lu,Daxia Zhang,Feng Liu,Jin Lin,Chenggang Zhou,Wei Mu

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 LC 10 and LC 30 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.

CAS / MDL: 6728-26-3 121-33-5 90-15-3 100-02-7 830-81-9

✓ 已验证产品关联 DOI PubMed 高影响因子

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PEST MANAGEMENT SCIENCE · 2024 · IF 3.8

Identification of pine wood nematode (Bursaphelenchus xylophilus) loading response genes in Japanese pine sawyer (Monochamus alternatus) through comparative genomics and transcriptomics

Xiangying Zou,Jiayu Jia,Tengfei Zhu,Shouping Cai,Yiman He,Shunde Su,Yu Fang,Jian Li,Guifang Lin,Jun Su

BACKGROUND Pine wood nematode (PWN; Bursaphelenchus xylophilus ) is the causative agent of pine wilt disease (PWD), which is considered the most dangerous biohazard to conifer trees globally. The transmission of PWN relies on insect vectors, particularly the Japanese pine sawyer (JPS; Monochamus alternatus ). However, the molecular mechanism underlying PWN-JPS assembly remains largely unknown. RESULTS Here, we found that both geographical and gender could significantly affect the PCA (PWN carrying amount) of JPS; thus, JPS transcriptomes from diverse locations and genders were explored regard to PWN loading. Due to the shortage of genomes, we developed a full-length reference transcriptome for analyzing next-generation sequencing data. A comparative genomic study was performed, and 11 248 potential PWN-carrying associate genes (β) were nominated in JPS by using the reported genomes of PWN and non-PWN carrier insect species. Then, 151 differentially expressed transcripts (DETs), 28 of them overlapped with β, correlated with the PCA of JPS were nominated by RNA-Seq, and found that fatty acid β-oxidation might be the key factor that affected the PCA of JPS. Furthermore, JPS fatty acid β-oxidation rates were experimentally decreased using the inhibitor Etomoxir, leading to an increased PCA of JPS. Meanwhile, silencing MaCPT1 in JPS by RNA interference led to a decreased fatty acid β-oxidation rate and increased PCA of JPS. CONCLUSIONS In conclusion, MaCPT1 was able to decrease the PWN-JPS assembly formation through the fatty acid β-oxidation of JPS. These results provide new insights for exploring the impact of PWN invasion on JPS. © 2024 Society of Chemical Industry.

CAS / MDL: 124083-20-1

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Effects of the plant volatile trans‑2-hexenal on the dispersal ability, nutrient metabolism and enzymatic activities of Bursaphelenchus xylophilus

Identification of pine wood nematode (Bursaphelenchus xylophilus) loading response genes in Japanese pine sawyer (Monochamus alternatus) through comparative genomics and transcriptomics