title: Soybean oil-degrading bacterial cultures as a potential for control of green peach aphids (Myzus persicae).
abstract: Microorganisms capable of degrading crude oil were isolated and grown in soybean oil as a sole carbon source. The microbial cultures were used to control green peach aphids in vitro. Approximately 60% mortality of aphids was observed when the cultures were applied alone onto aphids. To examine the cultures as a pesticide formulation mixture, the cultures were combined with a low dose of the insecticide imidacloprid (one-fourth dose of recommended field-application rate) and applied onto aphids. The cultures enhanced significantly the insecticidal effectiveness of imidacloprid, which was higher than imidacloprid alone applied at the low dose. The isolated microorganisms exhibited high emulsifying index values and decreased surface tension values after being grown in soybean oil media. GC/MS analyses showed that microorganisms degraded soybean oil to fatty acids. The cultures were suggested to play the roles of wetting, spreading, and sticking agents to improve the effectiveness of imidacloprid. This is the first report on the control of aphids by using oil-degrading microbial cultures.
authors.affiliation: Division of Applied Bioscience and Biotechnology, Environmentally-Friendly Agricultural Research Center, Institute of Agricultural Science and Technology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju, Korea.
authors.forename: Seul Ki
authors.initials: SK
authors.lastname: Kim
authors.forename: Seo Ri
authors.initials: SR
authors.lastname: Kim
authors.forename: Min Seok
authors.initials: MS
authors.lastname: Choi
authors.forename: Chang Eon
authors.initials: CE
authors.lastname: Park
authors.forename: Young Cheol
authors.initials: YC
authors.lastname: Kim
authors.forename: Kil Yong
authors.initials: KY
authors.lastname: Kim
authors.forename: Kyung Sook
authors.initials: KS
authors.lastname: Whang
authors.forename: Kyung-Taek
authors.initials: KT
authors.lastname: Oh
authors.forename: In Seon
authors.initials: IS
authors.lastname: Kim
mesh_terms: D000818:Animals; D001042:Aphids / Q000187:drug effects; D004357:Drug Synergism; D007093:Imidazoles / Q000494:pharmacology*; D007300:Insect Control; D007306:Insecticides / Q000494:pharmacology*; D000073943:Neonicotinoids; D009574:Nitro Compounds / Q000494:pharmacology*; D010572:Pest Control, Biological; D011549:Pseudomonas / Q000302:isolation & purification / Q000378:metabolism*; D012240:Rhodococcus / Q000302:isolation & purification / Q000378:metabolism*; D013024:Soybean Oil / Q000378:metabolism; D013500:Surface Tension
chemical_list: D007093:Imidazoles; D007306:Insecticides; D000073943:Neonicotinoids; D009574:Nitro Compounds; C082359:imidacloprid; D013024:Soybean Oil