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Showing 1 to 7 of 7 for “"PPO-inhibitor"”.
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Characterization of PPO-inhibitor resistance in waterhemp (Amaranthus tuberculatus) and Palmer amaranth (Amaranthus palmeri)
… synthase (EPSPS) inhibitors to control these species led to the evolution of resistance to these herbicides and, thus, protoporphyrinogen oxidase (PPO) inhibitors were used to help control these resistant weeds. Waterhemp was the first weed species to evolve …
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Evaluating cover crops and herbicides for horseweed and Palmer amaranth management
… in response to three Protoporphyrinogen Oxidase (PPO) inhibitors applied every three days once Palmer amaranth plants reached 2.5 cm tall. Cereal rye reduced weeds biomass by 78% and weed density by 75% by 8 weeks after cover crop seeding in the fall. At cover crop termination two weeks prior to …
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Multiple Herbicide Resistance in Waterhemp
… treatment of several acetolactate synthase (ALS) inhibitors, and a POST application of lactofen, a protoporphyrinogen oxidase (PPO)-inhibiting herbicide. Greenhouse studies were conducted with this waterhemp biotype, and revealed that plants were also resistant to atrazine, a photosystem II …
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Characterization of a novel five-way-resistant population of waterhemp (Amaranthus tuberculatus)
… (EPSPS), protoporphyrinogen oxidase (PPO), TIR1 auxin receptor, Photosystem II (PSII), and 4-hydroxyphenylpyruvate dioxygenase (HPPD). In 2012, a grower reported the failure to control a waterhemp population in conventional white corn with topramezone, an HPPD inhibitor. Records …
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Mechanism of Resistance in Common Ragweed to PPO-inhibiting Herbicides
… is known as the protoporphyrinogen oxidase (PPO, Protox) inhibiting herbicides. Only four weed species have been documented with resistance to this herbicide class. Waterhemp was the first weed species documented with PPO-resistance, which was due to a single codon deletion in a …
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Discovery, surveillance, and management of herbicide-resistant amaranthus spp
… synthase (EPSPS) and protoporphyrinogen oxidase (PPO), have become widespread within a narrow subset of the Amaranthus genus, such as A. tuberculatus and A. palmeri. Species within the genus possesses a distinct geographic distribution. Maintenance of these geographical boundaries can prevent the …
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Population genetics of herbicide resistance in waterhemp
… that inhibit protoporphyrinogen oxidase (PPO) have been identified throughout the Midwest and the mechanism of resistance in populations from Illinois was previously determined to result from a 3 base pair deletion in the protoporphyrinogen oxidase (PPO)-encoding gene, PPX2. The deletion …