Activities of antioxidant enzymes of Arabidopsis thaliana plants during cold hardening to hypothermia

Activities of antioxidant enzymes of Arabidopsis thaliana plants during cold hardening to... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Activities of antioxidant enzymes of Arabidopsis thaliana plants during cold hardening to hypothermia

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Publisher
Pleiades Publishing
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443716060108
Publisher site
See Article on Publisher Site

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