Water Stress Reveals Differential Antioxidant Responses Of Tolerant And Non-tolerant Sugarcane Genotypes.

dc.creatorBoaretto, Luis F
dc.creatorCarvalho, Giselle
dc.creatorBorgo, Lucélia
dc.creatorCreste, Silvana
dc.creatorLandell, Marcos G A
dc.creatorMazzafera, Paulo
dc.creatorAzevedo, Ricardo A
dc.date2014-Jan
dc.date2015-11-27T13:43:49Z
dc.date2015-11-27T13:43:49Z
dc.date.accessioned2018-03-29T01:22:39Z
dc.date.available2018-03-29T01:22:39Z
dc.identifierPlant Physiology And Biochemistry : Ppb / Société Française De Physiologie Végétale. v. 74, p. 165-75, 2014-Jan.
dc.identifier1873-2690
dc.identifier10.1016/j.plaphy.2013.11.016
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/24308986
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/201892
dc.identifier24308986
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1302125
dc.descriptionThe biochemical responses of the enzymatic antioxidant system of a drought-tolerant cultivar (IACSP 94-2094) and a commercial cultivar in Brazil (IACSP 95-5000) grown under two levels of soil water restriction (70% and 30% Soil Available Water Content) were investigated. IACSP 94-2094 exhibited one additional active superoxide dismutase (Cu/Zn-SOD VI) isoenzyme in comparison to IACSP 95-5000, possibly contributing to the heightened response of IACSP 94-2094 to the induced stress. The total glutathione reductase (GR) activity increased substantially in IACSP 94-2094 under conditions of severe water stress; however, the appearance of a new GR isoenzyme and the disappearance of another isoenzyme were found not to be related to the stress response because the cultivars from both treatment groups (control and water restrictions) exhibited identical changes. Catalase (CAT) activity seems to have a more direct role in H2O2 detoxification under water stress condition and the shift in isoenzymes in the tolerant cultivar might have contributed to this response, which may be dependent upon the location where the excessive H2O2 is being produced under stress. The improved performance of IACSP 94-2094 under drought stress was associated with a more efficient antioxidant system response, particularly under conditions of mild stress.
dc.description74
dc.description165-75
dc.languageeng
dc.relationPlant Physiology And Biochemistry : Ppb / Société Française De Physiologie Végétale
dc.relationPlant Physiol. Biochem.
dc.rightsfechado
dc.rightsCopyright © 2013 Elsevier Masson SAS. All rights reserved.
dc.sourcePubMed
dc.subjectAntioxidants
dc.subjectCatalase
dc.subjectGenotype
dc.subjectGlutathione Reductase
dc.subjectHydrogen Peroxide
dc.subjectLipid Peroxidation
dc.subjectSaccharum
dc.subjectStress, Physiological
dc.subjectWater
dc.subject(1)o(2)
dc.subjectAbiotic Stress
dc.subjectAntioxidant Enzymes
dc.subjectAsa
dc.subjectCat
dc.subjectDrought Stress
dc.subjectGpox
dc.subjectGpx
dc.subjectGr
dc.subjectGsh
dc.subjectGssg
dc.subjectH(2)o(2)
dc.subjectMda
dc.subjectO(2−)
dc.subjectOh(•)
dc.subjectPage
dc.subjectRos
dc.subjectRwc
dc.subjectReactive Oxygen Species
dc.subjectRelative Water Content
dc.subjectSawc
dc.subjectSod
dc.subjectSoil Available Water Content
dc.subjectTbars
dc.subjectAscorbic Acid
dc.subjectCatalase
dc.subjectGlutathione
dc.subjectGlutathione Peroxidase
dc.subjectGlutathione Reductase
dc.subjectGuaiacol Peroxidase
dc.subjectHydrogen Peroxide
dc.subjectHydroxyl Radical
dc.subjectMalondialdehyde
dc.subjectOxidized Glutathione
dc.subjectPolyacrylamide Gel Electrophoresis
dc.subjectReactive Oxygen Species
dc.subjectSinglet Oxygen
dc.subjectSuperoxide Dismutase
dc.subjectSuperoxide Radical
dc.subjectThiobarbituric Acid Reactive Substances
dc.titleWater Stress Reveals Differential Antioxidant Responses Of Tolerant And Non-tolerant Sugarcane Genotypes.
dc.typeArtículos de revistas


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