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BACKGROUNDSince the invasion of Phakopsora pachyrhizi (Syd. & P. Syd.) in Brazil, there have been detrimental yield losses of soybeans [Glycine max (L.) Merr.]. Disease management is mainly based on fungicide treatment. The sensitivity of single P. pachyhrizi isolates towards different demethylation‐inhibitors (DMIs) and quinone‐outside‐inhibitors (QoI) was surveyed and the corresponding resistance mechanisms were analysed...
BACKGROUNDIncreased insecticide detoxification mediated by cytochrome P450s is a common mechanism of insecticide resistance. Although Cyp6a2 has been observed to be overexpressed in many 4,4′‐dichlorodiphenyltrichloroethane (DDT)‐resistant strains of Drosophila melanogaster, how Cyp6a2 is regulated and whether its overproduction confers DDT resistance remain elusive.
RESULTSMolecular analysis identified...
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