Journal
CURRENT ISSUES IN MOLECULAR BIOLOGY
Volume 45, Issue 3, Pages 2461-2473Publisher
MDPI
DOI: 10.3390/cimb45030161
Keywords
phosphine; phosphine toxicity; synergism; phosphine-resistance; cross-resistance; ionizing radiation; UV radiation
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Phosphine is widely used for fumigating stored grains due to a lack of better alternatives, but its extensive use has led to insect pests developing resistance. Understanding the mode of action and resistance mechanisms of phosphine can help improve its efficacy and pest control strategies. Laboratory studies have shown treatments that enhance phosphine toxicity, which may be used to suppress resistance development and enhance efficacy.
Phosphine is the most widely used fumigant for stored grains due to a lack of better alternatives, all of which have serious shortcomings that restrict their use. The extensive use of phosphine has led to the development of resistance among insect pests of grain, which threatens its status as a reliable fumigant. Understanding the mode of action of phosphine as well as its resistance mechanisms provides insight that may lead to improved phosphine efficacy and pest control strategies. The mechanisms of action in phosphine vary from disrupting metabolism and oxidative stress to neurotoxicity. Phosphine resistance is genetically inherited and is mediated by the mitochondrial dihydrolipoamide dehydrogenase complex. In this regard, laboratory studies have revealed treatments that synergistically enhance phosphine toxicity that may be used to suppress resistance development and enhance efficacy. Here, we discuss the reported phosphine modes of action, mechanisms of resistance and interactions with other treatments.
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