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Moderately elevated temperature eliminates resistance of rice plants with enhanced expression of glutathione reductase to intensive photooxidative stress

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  • معلومة اضافية
    • Collection:
      Czech Academy of Sciences: dKNAV / Knihovna Akademie věd České Republiky
    • الموضوع:
    • نبذة مختصرة :
      We developed transgenic rice plants (Oryza sativa L. cv. Daeribbyeo) overproducing cytosolic glutathione reductase (GR) using a GR gene from Brassica campestris and studied their response to photo-oxidative stress in the presence of methyl viologen (MV, 10 and 50 μM concentrations) under room (25 °C) and moderately elevated (35 °C) temperature by analysis of chlorophyll (Chl) a fluorescence parameters (FV/FM, qN, and qP) and of Chl content. Elevated temperature enhanced and accelerated the photo-oxidative damage to photosynthetic apparatus expressed mainly by a fast decrease of qN. Higher temperature supported the protective reaction in transformed rice plants for lower MV concentration (10 μM) and eliminated the enhanced tolerance of photosystem 2 photochemistry to photooxidative stress for higher (50 μM) MV concentration. Different mechanisms and temperature dependence of oxidative and protective reactions explain the results. ; R. Kouřil . [et al.].
    • File Description:
      média; svazek
    • ISSN:
      0300-3604
    • Relation:
      https://kramerius.lib.cas.cz/view/uuid:1afdb373-d449-4db9-8749-3f5abd950da0
    • الرقم المعرف:
      10.1023/B:PHOT.0000027522.35486.f6
    • الدخول الالكتروني :
      https://kramerius.lib.cas.cz/view/uuid:1afdb373-d449-4db9-8749-3f5abd950da0
      https://doi.org/10.1023/B:PHOT.0000027522.35486.f6
    • Rights:
      policy:public
    • الرقم المعرف:
      edsbas.9EA5E3E6