Evaluation and identification of potential organic nematicidal volatiles from soil bacteria

摘要: Abstract Naturally occurring volatile compounds with nematicidal activities (NAs) are of significant economical importance in agriculture and forestry. In this study, organic (VOCs) produced by 200 isolates soil bacterial were evaluated vitro experiments. Our results identified that among the isolates, 149 (74.5%) 165 (82.5%) exhibited a greater than 20% NA against free-living nematode Panagrellus redivivus pinewood Bursaphelenchus xylophilus, respectively. Among them, 22 showed 100% P. seven B. xylophilus. When exposed to volatiles, nematodes gradually reduced their movements within 1–12 h after treatment, most stopped moving completely 24 h. analysis indicated variation capability VOCs not only species but also same species. Volatiles representative extracted using solid-phase micro-extraction (SPME) structures gas chromatography–mass spectrometry (GC–MS). The detected so included alcohols, aldehydes, ketones, alkenes ethers. Of 20 strong (⩾80%), nine (phenol, 2-octanol, benzaldehyde, benzeneacetaldehyde, decanal, 2-nonanone, 2-undecanone, cyclohexene dimethyl disulfide) displayed both model nematodes. Furthermore, five (terpineol, benzeneethanol, propanone, phenyl ethanone nonane) different xylophilus (75–100%) (17.02–100%).