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dc.creatorCosta, Bruno Henrique Garcia-
dc.creatorResende, Mário Lúcio Vilela de-
dc.creatorMonteiro, Ana Cristina Andrade-
dc.creatorBotelho, Deila Magna dos Santos-
dc.creatorRibeiro Júnior, Pedro Martins-
dc.creatorSilva, Bruno Marques da-
dc.identifier.citationCOSTA, B. H. G. et al. Potassium phosphites in the protection of common bean plants against anthracnose and biochemical defence responses. Journal of Phytopathology, Berlin, v. 166, n. 2, p. 95-102, Feb. 2018.pt_BR
dc.description.abstractThe aim of this study was to investigate the effectiveness of potassium phosphites for the control of anthracnose and the mode of action of these products on common bean plants against Colletotrichum lindemuthianum, comparing it with the standard resistance inducer acibenzolar‐S‐methyl. The protection of plants against anthracnose was evaluated in greenhouse after treatment with potassium phosphites (Phosphite A and B, 5.0 ml/L), acibenzolar‐S‐methyl (0.25 g/L), or no treatment (control). Two sprayings of the treatments were performed, respectively, at V4 stage (three trifoliate leaves) and at the R5 stage (flower buds present). The inoculation with C. lindemuthianum was performed 5 days after the first spraying. Phosphite formulations A and B reduced the severity of anthracnose by 68.7% and 55.6%, respectively, and the presence of phosphites in the leaf tissues were detected at concentrations between 1 and 3 mm by 7 days after spraying. These same concentrations of phosphites reduced the mycelial growth of C. lindemuthianum in vitro by 15.0% to 25.7%. In addition, the activities of defence enzymes and the levels of phenolic compounds and lignin were assessed. Phosphite treatments enhanced the activity of various enzymes, including superoxide dismutase, peroxidase, chitinase, and β‐1,3‐glucanase, and increased the lignin and a small increase in the levels of soluble phenolics. This study provides evidence that phosphite treatments control anthracnose by acting directly on C. lindemuthianum and by inducing the production of defence responses.pt_BR
dc.publisherBlackwell Verlag GmbHpt_BR
dc.sourceJournal of Phytopathologypt_BR
dc.subjectColletotrichum lindemuthianumpt_BR
dc.subjectInduced systemic resistancept_BR
dc.subjectPhaseolus vulgaris (L.)pt_BR
dc.subjectAnthracnose - Controlpt_BR
dc.subjectResistência sistêmica induzidapt_BR
dc.subjectAntracnose - Controlept_BR
dc.titlePotassium phosphites in the protection of common bean plants against anthracnose and biochemical defence responsespt_BR
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