Overexpression of glutathione reductase in Arabidopsis confers tolerance to aluminum stress

DOI

Bibliographic Information

Other Title
  • グルタチオン還元酵素を過剰発現させたシロイヌナズナのアルミニウムストレス耐性

Description

Aluminum (Al) stress has been widely reported to induce oxidative stress through formation of reactive oxygen species in plant cells. Glutathione (GSH) is a cellular antioxidant that protects cells from oxygen stress. Glutathione reductase (GR) is an important enzyme for GSH regeneration. To examine the protective effect of GR against Al stress, we developed transgenic Arabidopsis plants overexpressing cytosolic AtGR1 gene (accession No. At3g24170). GR transgenic plants exhibited better root elongation, lower hydrogen peroxide content and less lipid peroxidation compared to wild-type plants under Al stress. Although no difference in Al accumulation and the activities of superoxide disumutase (SOD), catalase (CAT) and dehydroascorbate reductase (DHAR) were observed in roots of transgenic and wild-type plants after 24-h Al treatment, GR transgenic plants showed higher activities of GR and ascorbate peroxidase (APX), and higher levels of GSH and ascorbate than wild-type plants. Our results demonstrate that overexpression of GR improves the antioxidant capacity, and leads to enhanced tolerance to Al stress.

Journal

Details 詳細情報について

  • CRID
    1390282680607729408
  • NII Article ID
    130006992009
  • DOI
    10.14841/jspp.2010.0.0676.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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