Eucalypt plants are physiologically and metabolically affected by infection with Ceratocystis fimbriata

dc.creatorSilva, André Costa da
dc.creatorSilva, Franklin Magnum de Oliveira
dc.creatorMilagre, Jocimar Caiafa
dc.creatorOmena-Garcia, Rebeca Patricia
dc.creatorAbreu, Mário Castro
dc.creatorMafia, Reginaldo Gonçalves
dc.creatorNunes-Nesi, Adriano
dc.creatorAlfenas, Acelino Couto
dc.date2018-05-18T12:27:06Z
dc.date2018-05-18T12:27:06Z
dc.date2017-12-02
dc.date.accessioned2023-09-27T20:52:26Z
dc.date.available2023-09-27T20:52:26Z
dc.identifier09819428
dc.identifierhttps://doi.org/10.1016/j.plaphy.2017.12.002
dc.identifierhttp://www.locus.ufv.br/handle/123456789/19693
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8949867
dc.descriptionCeratocystis wilt, caused by Ceratocystis fimbriata, is currently one of the most important disease in eucalypt plantations. Plants infected by C. fimbriata have lower volumetric growth, lower pulp yields and reduced timber values. The physiological bases of infection induced by this pathogen in eucalypt plant are not known. Therefore, this study aims to assess the physiological and metabolic changes in eucalypt clones that are resistant and susceptible to C. fimbriata. Once, we evaluated in detail their leaf gas exchange, chlorophyll a fluorescence, water potential, metabolite profiling and growth-related parameters. When inoculated, the susceptible clone displayed reduced water potential, CO2 assimilation rate, stomatal conductance, transpiration rate, photochemical quenching coefficient, electron transport rate, and root biomass. Inoculated resistant and susceptible clones both presented higher respiration rates than healthy plants. Many compounds of primary and secondary metabolism were significantly altered after fungal infection in both clones. These results suggest that, C. fimbriata interferes in the primary and secondary metabolism of plants that may be linked to the induction of defense mechanisms and that, due to water restrictions caused by the fungus in susceptible plants, there is a partial closure of the stomata to prevent water loss and a consequent reduction in photosynthesis and the transpiration rate, which in turn, leads to a decrease in the plant's growth-related. These results combined, allowed for a better understanding of the physiological and metabolic changes following the infectious process of C. fimbriata, which limit eucalypt plant growth.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherPlant Physiology and Biochemistry
dc.relationv. 123, p. 170-179, February 2018
dc.rightsElsevier Masson SAS.
dc.subjectCeratocystis wilt
dc.subjectCeratocystis' symptoms
dc.subjectVascular pathogens
dc.subjectGas exchange
dc.subjectChlorophyll a fluorescence
dc.subjectWater potential
dc.subjectPrimary metabolism
dc.titleEucalypt plants are physiologically and metabolically affected by infection with Ceratocystis fimbriata
dc.typeArtigo


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