Synergistic exposure of rice seeds to different doses of gamma-ray and salinity stress resulted in increased antioxidant enzyme activities and gene-specific modulation of TC-NER pathway

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dc.creatorMacovei, Anca
dc.creatorGarg, Bharti
dc.creatorRaikwar, Shailendra
dc.creatorBalestrazzi, Alma
dc.creatorCarbonera, Daniela
dc.creatorButtafava, Armando
dc.creatorBremont, Juan Francisco Jiménez
dc.creatorGill, Sarvajeet Singh
dc.creatorTuteja, Narendra
dc.date2014
dc.date2024-12-19T12:55:11Z
dc.date2024-12-19T12:55:11Z
dc.date.accessioned2026-06-27T04:15:46Z
dc.descriptionRecent reports have underlined the potential of gamma (γ)-rays as tools for seed priming, a process used in seed industry to increase seed vigor and to enhance plant tolerance to biotic/abiotic stresses. However, the impact ofγ-rays on key aspects of plant metabolism still needs to be carefully evaluated. In the present study, rice seeds were challenged with different doses ofγ-rays and grown in absence/presence of NaCl to assess the impact of these treatments on the early stages of plant life. Enhanced germination efficiency associated with increase in radicle and hypocotyl length was observed, while at later stages no increase in plant tolerance to salinity stress was evident. APX, CAT, and GR were enhanced at transcriptional level and in terms of enzyme activity, indicating the activation of antioxidant defence. The profiles of DNA damage accumulation were obtained using SCGE and the implication of TC-NER pathway in DNA damage sensing and repair mechanisms is discussed.OsXPB2,OsXPD,OsTFIIS,andOsTFIIS-likegenes showed differential modulation in seedlings and plantlets in response toγ-irradiation and salinity stress. Altogether, the synergistic exposure toγ-rays and NaCl resulted in enhanced oxidative stress and proper activation of antioxidant mechanisms, thus being compatible with plant survival.
dc.identifierhttps://hdl.handle.net/10568/165563
dc.identifier.urihttp://hdl.handle.net/123456789/26956
dc.languageen
dc.publisherHindawi Limited
dc.rightsOpen Access
dc.sourceMacovei, A., Garg, B., Raikwar, S., Balestrazzi, A., Carbonera, D., Buttafava, A., Bremont, J.F.J., Gill, S.S. and Tuteja, N. 2014. Synergistic exposure of rice seeds to different doses of gamma-ray and salinity stress resulted in increased antioxidant enzyme activities and gene-specific modulation of TC-NER pathway. BioMed Research International, Volume 2014 p. 1-15
dc.subjectabiotic stress
dc.subjectantioxidants
dc.subjectbiotic stress
dc.subjectgamma radiation
dc.subjectpregermination
dc.subjectsalinity
dc.subjectsalt stress
dc.subjectseeds
dc.titleSynergistic exposure of rice seeds to different doses of gamma-ray and salinity stress resulted in increased antioxidant enzyme activities and gene-specific modulation of TC-NER pathway
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)