Document Detail

Comparing the impact of conventional pesticide and use of a transgenic pest-resistant crop on the beneficial carabid beetle Pterostichus melanarius.
MedLine Citation:
PMID:  16906504     Owner:  NLM     Status:  MEDLINE    
The potential impact of a chemical pesticide control method has been compared with that of transgenic plants expressing a protease inhibitor conferring insect resistance by utilising a tritrophic system comprising the crop plant Brassica napus (L.) (Oilseed rape), the pest mollusc Deroceras reticulatum (Müller) and the predatory carabid beetle Pterostichus melanarius (Illiger). Cypermethrin, as the most widely used pesticide in UK oilseed rape (OSR) cultivation, was selected as the conventional treatment. OSR expressing a cysteine protease inhibitor, oryzacystatin-1 (OC-1), was the transgenic comparator. In feeding trials, D. reticulatum showed no significant long-term effects on measured life history parameters (survival, weight gain, food consumption) as a result of exposure to either the cypermethrin or OC-1 treatment. However, D. reticulatum was able to respond to the presence of the dietary inhibitor by producing two novel proteases following exposure to OC-1-expressing OSR. Similarly, P. melanarius showed no detectable alterations in mortality, weight gain or food consumption when feeding on D. reticulatum previously fed either pesticide-contaminated or GM plant material. Furthermore, as with the slug, a novel form of protease, approximately M(r) 27 kDa, was induced in the carabid in response to feeding on slugs fed OC-1-expressing OSR.
Evan A Mulligan; Natalie Ferry; Lise Jouanin; Keith Fa Walters; Gordon R Port; Angharad Mr Gatehouse
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pest management science     Volume:  62     ISSN:  1526-498X     ISO Abbreviation:  Pest Manag. Sci.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-09-07     Completed Date:  2006-11-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100898744     Medline TA:  Pest Manag Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  999-1012     Citation Subset:  IM    
Institute for Research on Environment and Sustainability, School of Biology, University of Newcastle Upon-Tyne, Newcastle NE1 7RU, UK.
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MeSH Terms
Beetles / drug effects*,  physiology
Brassica napus / genetics
Cystatins / genetics,  metabolism
Cysteine Endopeptidases / metabolism
Cysteine Proteinase Inhibitors / genetics,  pharmacology
Food Chain
Gastrointestinal Contents
Gastropoda / drug effects,  enzymology
Great Britain
Peptide Hydrolases / analysis
Pest Control, Biological*
Plant Leaves / metabolism
Plants, Genetically Modified / metabolism*
Pyrethrins / analysis,  toxicity*
Reg. No./Substance:
0/Cystatins; 0/Cysteine Proteinase Inhibitors; 0/Insecticides; 0/Pyrethrins; 52315-07-8/cypermethrin; EC 3.4.-/Peptide Hydrolases; EC 3.4.22.-/Cysteine Endopeptidases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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