title: Aphicidal Activity of an Ageraphorone Extract From Eupatorium adenophorum Against Pseudoregma bambucicola (Homoptera: Aphididae, Takahashi).
abstract: The bamboo aphid, Pseudoregma bambucicola, is an important insect pest of bamboo that affects normal bamboo growth and induces sooty molds. The control of P. bambucicola involves the application of chemicals, such as imidacloprid, to which many species are resistant. In this study, we isolate a novel botanical pesticide (9-oxo-10,11-dehydro-ageraphorone) from an Eupatorium adenophorum(Asteraceae: Compositae) petroleum ether extract and test the aphicidal activity of this compound against P. bambucicola in laboratory bioassay and field-based experiments. This ageraphorone compound at a concentration of 2 mg/ml caused 73.33% mortality (corrected mortality [Subtracted the mortality of the negative control]: 70%) of P. bambucicola by laboratory bioassay within 6 h. Even at lower concentrations, this compound caused greater 33% mortality (corrected mortality: 30%) of aphids. Field experiments with naturally infested bamboo plants showed that two applications of 2 mg/ml ageraphorone to infested plants completely cleared infestations within 30 d. These effects were similar to those of the positive control (imidacloprid). These results reveal that 9-oxo-10,11-dehydro-ageraphorone exhibits significant aphicidal activity against bamboo aphids. We suggest that future research be directed at developing this ageraphorone compound from E. adenophorum as an aphicidal agent for biocontrol.
authors.affiliation: College of Life Science, Leshan Normal University, Le'shan 614000, China *These authors contributed equally to this work.
authors.forename: Xiang
authors.initials: X
authors.lastname: Nong
authors.affiliation: College of Life Science, Leshan Normal University, Le'shan 614000, China *These authors contributed equally to this work.
authors.forename: Feng-Zheng
authors.initials: FZ
authors.lastname: Chen
authors.affiliation: College of Life Science, Leshan Normal University, Le'shan 614000, China yangyaojun68@163.com rsyyj@126.com.
authors.forename: Yao-Jun
authors.initials: YJ
authors.lastname: Yang
authors.affiliation: College of Life Science, Leshan Normal University, Le'shan 614000, China.
authors.forename: Zi
authors.initials: Z
authors.lastname: Liang
authors.affiliation: College of Life Science, Leshan Normal University, Le'shan 614000, China.
authors.forename: Bao-Lian
authors.initials: BL
authors.lastname: Huang
authors.affiliation: College of Life Science, Leshan Normal University, Le'shan 614000, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
authors.affiliation: Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guang'zhou 510640, China.
authors.forename: Tian-Fei
authors.initials: TF
authors.lastname: Liu
authors.affiliation: Sichuan Entry-exit Inspection and Quarantine Bureau, Cheng'du 610041, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Yu
mesh_terms: D036603:Ageratina / Q000737:chemistry*; D000818:Animals; D001042:Aphids / Q000502:physiology*; D031723:Bambusa / Q000469:parasitology; D007093:Imidazoles; D007300:Insect Control; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; D010936:Plant Extracts / Q000737:chemistry; D012717:Sesquiterpenes
chemical_list: C098165:9-oxo-10,11-dehydroagerophorone; D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; D010936:Plant Extracts; D012717:Sesquiterpenes; C082359:imidacloprid
keywords: Ageraphorone; Pseudoregma bambucicola; bamboo aphid; insect biocontrol