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dc.creatorMachado, Alan Rodrigues Teixeira-
dc.creatorCampos, Viviane Aparecida Costa-
dc.creatorSilva, Willian José Rodrigues da-
dc.creatorCampos, Vicente Paulo-
dc.creatorZeri, Ana Carolina de Mattos-
dc.creatorOliveira, Denilson Ferreira-
dc.date.accessioned2017-10-11T18:07:47Z-
dc.date.available2017-10-11T18:07:47Z-
dc.date.issued2012-10-
dc.identifier.citationMACHADO, A. R. T. et al. Metabolic profiling in the roots of coffee plants exposed to the coffee root-knot nematode, Meloidogyne exigua. Dordrecht, v. 134, n. 2, p. 431-441, Oct. 2012.pt_BR
dc.identifier.urihttps://link.springer.com/article/10.1007/s10658-012-0008-3pt_BR
dc.identifier.urirepositorio.ufla.br/jspui/handle/1/15506-
dc.description.abstractTo understand the effect of nematode Meloidogyne exigua infestation on coffee plants, resistant and susceptible coffee seedlings were inoculated with second-stage juveniles of M. exigua, and root metabolites were studied for four time intervals at 0, 24, 48 and 96 h. During this important period for parasite establishment, the concentrations of phenols, carbohydrates, amino acids and alkaloids in the roots were measured, and hydrogen nuclear magnetic resonance spectra of the root extracts were used to identify and quantify other metabolites. One of the most striking changes was the concentration of fumaric acid on resistant plants, which varied from 59 μg g(of root)−1 to 138 μg g(of root)−1 during the first 24 h of the nematode inoculation. The same level of variation was observed much later (96 h) in susceptible plants. Similarly, formic and quinic acid concentrations increased more rapidly in the resistant plants compared to the susceptibles. Sucrose concentrations increased to 370 % in the first 48 h in the resistant plants but showed no significant variation in the susceptible plant. Besides, the concentration of alkaloids was much higher at 24 and 48 h in the susceptibles compared to the resistant plants. These results suggest that the higher production of sucrose as well as formic, fumaric and quinic acids, and the lower production of alkaloids by the resistant cultivar in the first 48 h after the nematode inoculation are associated with the resistance of coffee plants to M. exigua.pt_BR
dc.languageen_USpt_BR
dc.publisherSpringerpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceEuropean Journal of Plant Pathologypt_BR
dc.subjectRoot-knot nematodept_BR
dc.subjectCoffee - Genetic improvmentpt_BR
dc.subjectNematodes - Resistancept_BR
dc.subjectNematóide de nó de raizpt_BR
dc.subjectCafé - Melhoramento genéticopt_BR
dc.subjectNematóides - Resistênciapt_BR
dc.titleMetabolic profiling in the roots of coffee plants exposed to the coffee root-knot nematode, Meloidogyne exiguapt_BR
dc.typeArtigopt_BR
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