Activities of antioxidant enzymes of Arabidopsis thaliana plants during cold hardening to hypothermia
- Autores: Sin’kevich M.S.1, Selivanov A.A.1, Antipina O.V.1, Kropocheva E.V.2, Alieva G.P.1, Suvorova T.A.1, Astakhova N.V.1, Moshkov I.E.1
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Afiliações:
- Timiryazev Institute of Plant Physiology
- Moscow State University
- Edição: Volume 63, Nº 6 (2016)
- Páginas: 749-753
- Seção: Research Papers
- URL: https://journals.rcsi.science/1021-4437/article/view/179347
- DOI: https://doi.org/10.1134/S1021443716060108
- ID: 179347
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Resumo
Changes in activities of the enzymes performing direct antioxidant functions were studied in 7–8-week-old plants Arabidopsis thaliana Heinh (L.) of Columbia (Col-0) ecotype. It was found that 5-day cold hardening at 2°C increased plant cold resistance to the subsequent stronger cooling. Under these conditions, the marked changes occurred in activities of superoxide dismutase and III type (guaiacol) peroxidses but not in that of catalase. The total peroxidase activity exceeded the catalase activity before cold hardening. Therefore, peroxidases are able to decompose more H2O2 than catalases and appear to make the dominant contribution to the protection from the cold damage.
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Sobre autores
M. Sin’kevich
Timiryazev Institute of Plant Physiology
Autor responsável pela correspondência
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
A. Selivanov
Timiryazev Institute of Plant Physiology
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
O. Antipina
Timiryazev Institute of Plant Physiology
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
E. Kropocheva
Moscow State University
Email: sinkevich_m@mail.ru
Rússia, Moscow, 119991
G. Alieva
Timiryazev Institute of Plant Physiology
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
T. Suvorova
Timiryazev Institute of Plant Physiology
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
N. Astakhova
Timiryazev Institute of Plant Physiology
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
I. Moshkov
Timiryazev Institute of Plant Physiology
Email: sinkevich_m@mail.ru
Rússia, Moscow, 127276
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