Capacity to control oxidative stress-induced caspase-like activity determines the level of tolerance to salt stress in two contrasting maize genotypes

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dc.contributor.authorKeyster, Marshall
dc.contributor.authorKlein, Ashwil
dc.contributor.authorDu Plessis, Morné
dc.contributor.authorJacobs, Alex
dc.contributor.authorKappo, Abidemi
dc.contributor.authorKocsy, Gábor
dc.contributor.authorGaliba, Gábor
dc.contributor.authorLudidi, Ndiko
dc.date.accessioned2018-02-02T09:30:59Z
dc.date.available2018-02-02T09:30:59Z
dc.date.issued2013
dc.description.abstractThe response of two maize (Zea mays L.) genotypes, named GR (salt-tolerant) and SK (salt-sensitive), to salt stress (150 mM NaCl) was investigated under controlled environmental growth conditions. Genotype SK experienced more oxidative damage than the GR genotype when subjected to salt stress, which corresponded to higher O2- production rate and H2O2 content in the SK genotype than the GR genotype. Induction of caspase-like activity in response to salt stress was stronger in the SK genotype than in the GR genotype. On the other hand, induction of antioxidant enzyme activity to scavenge O2- and H2O2 in response to salt stress was weaker in the SK genotype than in the GR genotype. Consequently, the higher level of oxidative damage in the SK genotype in response to salt stress was manifested as more extensive cell death and biomass reduction in the SK genotype than it was in the GR genotype. Our results suggest that a direct relationship exists between salt stress-induced oxidative damage and cell death-inducing caspase-like activity, with tolerance to the salt stress being controlled by the efficiency of the plantantioxidant enzymes in limiting salt stress-induced oxidative damage and thus limiting cell death-inducing caspase-like activity.en_US
dc.description.accreditationWeb of Science
dc.identifier.citationKeyster, M. et al. (2013). Capacity to control oxidative stress-induced caspase-like activity determines the level of tolerance to salt stress in two contrasting maize genotypes. Acta Physiologiae Plantarum, 35: 31 – 40.en_US
dc.identifier.issn0137-5881
dc.identifier.urihttp://dx.doi.org/10.1007/s11738-012-1045-4
dc.identifier.urihttp://hdl.handle.net/10566/3457
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherSpringeren_US
dc.rightsThis is the author-version of the article published online at: http://dx.doi.org/10.1007/s11738-012-1045-4
dc.status.ispeerreviewedTRUE
dc.subjectAntioxidant enzymesen_US
dc.subjectCaspase-like activityen_US
dc.subjectCell deathen_US
dc.subjectSalt stressen_US
dc.subjectOxidative stressen_US
dc.subjectLipid peroxidationen_US
dc.titleCapacity to control oxidative stress-induced caspase-like activity determines the level of tolerance to salt stress in two contrasting maize genotypesen_US
dc.typeArticleen_US

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