Comparative toxicity,growth inhibitory and biochemical effects of terpenes and phenylpropenes on Spodoptera littoralis (Boisd.) |
| |
| Affiliation: | 1. Ojeong Eco-Resilience Institute, Korea University, Seoul 02841, Republic of Korea;2. Department of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea;3. Institute of Environment and Ecology, OJERI, Korea University, Seoul 02841, Republic of Korea;1. The BCPH Unit of Molecular Physiology, Department of Chemistry, Biology and Marine Science, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan;2. Center for Research Advancement and Collaboration, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan;3. Japan Butterfly Conservation Society, Shinagawa, Tokyo, Japan;4. Institute for Integrated Radiation and Nuclear Science, Kyoto University, Kumatori, Osaka 590-0494, Japan;1. School of Horticulture and Plant Protection & Institute of Applied Entomology, Yangzhou University, Yangzhou 225009, China;2. Joint International Research Laboratory of Agriculture and Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou, China;1. Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University, Cheongju 28644, Republic of Korea;2. Plant Quarntine Technology Center, Animal and Plant Quarantine Agency, Gimcheon 39660, Republic of Korea;1. Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China;2. Southern Insect Management Research Unit, Agricultural Research Service, United States Department of Agriculture, Stoneville, MS 38776, USA;3. Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China |
| |
| Abstract: | Eleven monoterpenes, phenylpropenes and sesquiterpenes were evaluated for their insecticidal and growth inhibitory activities against the second and fourth larval instars of Spodoptera littoralis. Among the tested compounds, 1,8-cineole revealed the highest fumigant toxicity against the 2nd and 4th larval instars with LC50 values of 2.32 and 3.13 mg/L air, respectively. The monoterpenes, p-cymene, α-terpinene, (−)α-pinene and (−)-carvone were highly toxic to both larval stages as their LC50 values ranged between 7.35 and 13.79 mg/L air against 2nd larval instar and between 14.66 and 32.02 mg/L air against 4th larval instar. In topical application assay against the 4th larval instar, (−)-carvone (LD50 = 0.15 mg/larva) and cuminaldehyde (LD50 = 0.27 mg/larva) were the most potent contact toxicants. In residual film assay, trans-cinnamaldehyde, (−)-citronellal and p-cymene showed the highest insecticidal activity against the 2nd larval instar, while α-terpinene and (−)-carvone were most effective compounds against the 4th larval instar. Moreover, the tested compounds caused strong growth reduction of both larval stages with growth inhibition higher than 80% in the 2nd larval instar and higher than 70% in the 4th larval instar. On the other hand, (−)-carvone, cuminaldehyde and (Z,E)-nerolidol showed pronounced inhibitory effects on acetylcholinesterase (AChE) and adenosine triphosphatases (ATPases) activity of S. littoralis larvae. Cuminaldehyde (IC50 = 1.04 mM) and (Z,E)-nerolidol (IC50 = 0.02 mM) caused the highest inhibition of AChE and ATPases, respectively. Taken together, the results indicate that monoterpenes, phenylpropenes and phenylpropenes could be used to develop new botanical insecticides for S. littoralis management. |
| |
| Keywords: | Natural products: Fumigant toxicity Contact toxicity Residual toxicity Growth inhibition AChE ATPases |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
