Insecticidal activity of 23 essential oils and their major compounds against adult Lipaphis pseudobrassicae (Davis) (Aphididae:


By jpeza - Posted on 30 Septiembre 2009

Fecha Publicación: 
1 Ago 2005
Nombre de Revista: 
Datos del paper
Autor Principal: 
Blair J Sampson
Volumen: 
61
Página Inicial: 
1122
Página Final: 
1128
Abstract: 

Essential oils from 23 species of plants comprising 14 genera and 4 plant families were obtained
by Clevenger-type water distillation. The major compounds in these essential oils were identified with
GC-MS and their insecticidal activity against adult turnip aphids, Lipaphis pseudobrassicae (Davis),
tested with dosage-mortality bioassays. We examined mortality only for viviparous adults because
sizeable aphid populations on crucifer (Brassicaceae) hosts are largely produced by these wingless,
parthenogenic females. Twenty-two of the oils were directly applied to aphid females in randomized
blocks at concentrations of 0.0, 1.0, 2.5, 5.0 and 10.0mgml−1. Essential oils mixed with a non-toxic
emulsifying agent, dimethyl sulfoxide (DMSO), more easily penetrated the waxy insect cuticle. Probit
analysis and LC50 at three different exposures showed aphids were quickly incapacitated and killed
by aliphatic aldehydes, phenols and monocyclic terpenes contained in Bifora and Satureja oils and at
applied concentrations as low as 0.3 to 1.0mgml−1. Only enough Pimpinella isaurica oil and its three
phenylpropanoid fractions were available for testing at a single concentration of 10mgml−1. We could
not spare any additional P. isaurica oil for testing at other concentrations. Phenylpropanoids isolated
from P. isaurica oil when recombined or left naturally blended in the oil were highly bioactive against L.
pseudobrassicae at 10mgml−1.
 2005 Society of Chemical Industry

Dirección del Autor: 

1USDA-ARS, Small Fruit Research Station, 306 South High Street, Poplarville, MS 39470, USA
2National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, University of Mississippi, University,
MS 38677, USA
3Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, 26470-Eskisehir, Turkey
4Department of Pharmacognosy, University of Mississippi, University, MS 38677, USA
5USDA-ARS-NPURU, University of Mississippi, University, MS 38677, USA

Keywords: 
biopesticides; natural products; Brassicaceae; bioassay; phenylpropanoids
Coautores: 

Nurhayat Tabanca,2,3 Nes’e Kirimer,3 Betul Demirci,3
K Husnu Can Baser,3 Ikhlas A Khan,2,4 James M Spiers1 and David E Wedge5

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