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  • Mutation  (2)
  • American Association for the Advancement of Science (AAAS)  (2)
  • American Chemical Society
  • National Academy of Sciences
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  • American Association for the Advancement of Science (AAAS)  (2)
  • American Chemical Society
  • National Academy of Sciences
  • Nature Publishing Group (NPG)  (2)
Years
  • 1
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    A core metabolic enzyme mediates resistance to phosphine gas (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-11-10
    Description: Phosphine is a small redox-active gas that is used to protect global grain reserves, which are threatened by the emergence of phosphine resistance in pest insects. We find that polymorphisms responsible for genetic resistance cluster around the redox-active catalytic disulfide or the dimerization interface of dihydrolipoamide dehydrogenase (DLD) in insects (Rhyzopertha dominica and Tribolium castaneum) and nematodes (Caenorhabditis elegans). DLD is a core metabolic enzyme representing a new class of resistance factor for a redox-active metabolic toxin. It participates in four key steps of core metabolism, and metabolite profiles indicate that phosphine exposure in mutant and wild-type animals affects these steps differently. Mutation of DLD in C. elegans increases arsenite sensitivity. This specific vulnerability may be exploited to control phosphine-resistant insects and safeguard food security.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schlipalius, David I -- Valmas, Nicholas -- Tuck, Andrew G -- Jagadeesan, Rajeswaran -- Ma, Li -- Kaur, Ramandeep -- Goldinger, Anita -- Anderson, Cameron -- Kuang, Jujiao -- Zuryn, Steven -- Mau, Yosep S -- Cheng, Qiang -- Collins, Patrick J -- Nayak, Manoj K -- Schirra, Horst Joachim -- Hilliard, Massimo A -- Ebert, Paul R -- R01NS060129/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2012 Nov 9;338(6108):807-10. doi: 10.1126/science.1224951.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Agri-Science Queensland, Department of Agriculture, Fisheries and Forestry, Ecosciences Precinct, Brisbane, QLD 4001, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23139334" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arsenicals/pharmacology ; Arsenites/pharmacology ; Beetles/drug effects/*enzymology/genetics/metabolism ; Caenorhabditis elegans/drug effects/*enzymology/genetics/metabolism ; Caenorhabditis elegans Proteins/chemistry/genetics/metabolism ; Catalytic Domain ; Dihydrolipoamide Dehydrogenase/chemistry/*genetics/metabolism ; Insect Proteins/chemistry/genetics/metabolism ; Insecticide Resistance/*genetics ; *Insecticides/pharmacology ; Metabolic Networks and Pathways ; Molecular Sequence Data ; Mutation ; Oxidation-Reduction ; Pesticides ; *Phosphines/pharmacology ; Polymorphism, Genetic ; Protein Multimerization ; Tribolium/drug effects/*enzymology/genetics/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Experimental evolution of parasites (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-11-20
    Description: Serial passage experiments are a form of experimental evolution that is frequently used in applied sciences; for example, in vaccine development. During these experiments, molecular and phenotypic evolution can be monitored in real time, providing insights into the causes and consequences of parasite evolution. Within-host competition generally drives an increase in a parasite's virulence in a new host, whereas the parasite becomes avirulent to its former host, indicating a trade-off between parasite fitnesses on different hosts. Understanding why parasite virulence seldom escalates similarly in natural populations could help us to manage virulence and deal with emerging diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ebert, D -- New York, N.Y. -- Science. 1998 Nov 20;282(5393):1432-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universitat Basel, Zoologisches Institut, Rheinsprung 9, 4051 Basel, Switzerland. ebert@ubaclu.unibas.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9822369" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Animals ; Bacteria/genetics/growth & development/*pathogenicity ; *Biological Evolution ; Fungi/growth & development/pathogenicity ; Genetic Variation ; *Host-Parasite Interactions ; Mutation ; Parasites/genetics/growth & development/*pathogenicity ; *Serial Passage ; Virulence ; Viruses/genetics/growth & development/*pathogenicity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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