Glutathione regulates enzymatic antioxidant defence with differential thiol content in perennial pepperweed and helps adapting to extreme environment

• Autorzy: Kaur T. , Bhat H. A. , Raina A. , Koul S. , Vyas D.
• Języki publikacji: EN

Abstrakty

EN

Perennial pepperweed (Lepidium latifolium Linn.) is a preferred ‘phytofood’ that is available for the longest period of a year in Ladakh. Present study was undertaken to identify the mechanism of redox homeostasis and understand factors responsible for its biochemical superiority during low temperatures. Results reveal that despite the stressful environment at higher altitude, the cellular conditions are more reducing for this plant. The reducing environment is maintained by significant induction of GSH rather than changes in its oxidation state, which changes the redox potential by 12 mV. Lower ratio of NADP+/NADPH and induction of new antioxidative isozymes at Leh (3,505 m) suggest crucial role of redox regulation in adaptation. These new proteins have higher thiol content and could provide an efficient redox sensing mechanism in Lepidium latifolium that respond through GSH/NADPH redox buffers. In vitro feeding experiment suggested that GSH plays an important role in induction of antioxidant enzymes, which may not be the direct consequence of H2O2 accumulation. It needs to be further investigated whether its responsive redox metabolism has some role in its invasive growth in riparian plains of America.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 08
• Opis fizyczny: p.2501-2511,fig.,ref.

Twórcy

autor

Kaur T.

• Academy of Scientific and Innovative Research, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India
• Biodiversity and Applied Botany Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India

autor

Bhat H. A.

• Biodiversity and Applied Botany Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India

autor

Raina A.

• Biodiversity and Applied Botany Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India

autor

Koul S.

• Biodiversity and Applied Botany Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India

autor

Vyas D.

• Academy of Scientific and Innovative Research, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India
• Biodiversity and Applied Botany Division, Indian Institute of Integrative Medicine (CSIR), Canal Road, Jammu, Jammu and Kashmir 180001, India

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