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Active oxygen scave...
Active oxygen scavengers during cold acclimation of Scots pine seedlings in relation to freezing tolerance
- Article/chapterEnglish1998
Publisher, publication year, extent ...
Numbers
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LIBRIS-ID:oai:DiVA.org:umu-44778
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-44778URI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Freezing injury of plants may be caused by the deleterious reactions of active oxygen species, and free-radical scavenging systems may be important in the alleviation of freezing stress. To test the feasibility of this hypothesis, enzymes and metabolites that cooperatively scavenge O-2(-) and H2O2 were analyzed in Scots pine (Pinus sylvestris L.) seedlings during a stepwise cold acclimation procedure. Elevated levels of enzymatic scavengers such as ascorbate peroxidase, glutathione reductase, monodehydroascorbate reductase, and dehy droascorbate reductase were found, along with increased freezing tolerance during cold acclimation, supporting the hypothesis. Induction of the scavenging systems during acclimation is discussed in relation to freezing tolerance. (C) 1998 Academic Press.
Subject headings and genre
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active oxygen
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freezing tolerance
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low temperature
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Pinus
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scavenging systems
Added entries (persons, corporate bodies, meetings, titles ...)
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Oquist, Gunnar,1941-Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)(Swepub:umu)guoq0001
(author)
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Wingsle, GunnarUmeå universitet,Umeå Plant Science Centre (UPSC)
(author)
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Umeå universitetInstitutionen för fysiologisk botanik
(creator_code:org_t)
Related titles
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In:Cryobiology37:1, s. 38-450011-22401090-2392
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