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Title: Superoxide dismutase, catalase, and. alpha. -tocopherol content of stored potato tubers. [Solanum tuberosum L]

Abstract

Activated oxygen or oxygen free radical mediated damage to plants has been established or implicated in many plant stress situations. The extent of activated oxygen damage to potato (Solanum tuberosum L.) tubers during low temperature storage and long-term storage is not known. Quantitation of oxygen free radical mediated damage in plant tissues is difficult. However, it is comparatively easy to quantitate endogenous antioxidants, which detoxify potentially damaging forms of activated oxygen. Three tuber antioxidants, superoxide dismutase, catalase, and {alpha}-tocopherol were assayed from four potato cultivars stored at 3{degree}C and 9{degree}C for 40 weeks. Tubers stored at 3{degree}C demonstrated increased superoxide dismutase activities (up to 72%) compared to tubers stored at 9{degree}C. Time dependent increases in the levels of superoxide dismutase, catalase, and {alpha}-tocopherol occurred during the course of the 40 week storage. The possible relationship between these increases in antioxidants and the rate of activated oxygen production in the tubers is discussed.

Authors:
;  [1]
  1. Univ. of Minnesota, St. Paul (USA)
Publication Date:
OSTI Identifier:
5717684
Resource Type:
Journal Article
Journal Name:
Plant Physiology; (USA)
Additional Journal Information:
Journal Volume: 94:3; Journal ID: ISSN 0032-0889
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 59 BASIC BIOLOGICAL SCIENCES; ANTIOXIDANTS; BIOCHEMICAL REACTION KINETICS; CATALASE; HYDROXYL RADICALS; MEASURING METHODS; METABOLISM; PEROXY RADICALS; PLANT TISSUES; SOLANUM; STORAGE LIFE; SUPEROXIDE DISMUTASE; SUPEROXIDE RADICALS; TOXICITY; VITAMIN E; BODY; ENZYMES; KINETICS; MAGNOLIOPHYTA; MAGNOLIOPSIDA; OXIDOREDUCTASES; PEROXIDASES; PLANTS; RADICALS; REACTION KINETICS; TISSUES; VITAMINS; 560300* - Chemicals Metabolism & Toxicology; 551000 - Physiological Systems

Citation Formats

Spychalla, J P, and Desborough, S L. Superoxide dismutase, catalase, and. alpha. -tocopherol content of stored potato tubers. [Solanum tuberosum L]. United States: N. p., 1990. Web. doi:10.1104/pp.94.3.1214.
Spychalla, J P, & Desborough, S L. Superoxide dismutase, catalase, and. alpha. -tocopherol content of stored potato tubers. [Solanum tuberosum L]. United States. https://doi.org/10.1104/pp.94.3.1214
Spychalla, J P, and Desborough, S L. 1990. "Superoxide dismutase, catalase, and. alpha. -tocopherol content of stored potato tubers. [Solanum tuberosum L]". United States. https://doi.org/10.1104/pp.94.3.1214.
@article{osti_5717684,
title = {Superoxide dismutase, catalase, and. alpha. -tocopherol content of stored potato tubers. [Solanum tuberosum L]},
author = {Spychalla, J P and Desborough, S L},
abstractNote = {Activated oxygen or oxygen free radical mediated damage to plants has been established or implicated in many plant stress situations. The extent of activated oxygen damage to potato (Solanum tuberosum L.) tubers during low temperature storage and long-term storage is not known. Quantitation of oxygen free radical mediated damage in plant tissues is difficult. However, it is comparatively easy to quantitate endogenous antioxidants, which detoxify potentially damaging forms of activated oxygen. Three tuber antioxidants, superoxide dismutase, catalase, and {alpha}-tocopherol were assayed from four potato cultivars stored at 3{degree}C and 9{degree}C for 40 weeks. Tubers stored at 3{degree}C demonstrated increased superoxide dismutase activities (up to 72%) compared to tubers stored at 9{degree}C. Time dependent increases in the levels of superoxide dismutase, catalase, and {alpha}-tocopherol occurred during the course of the 40 week storage. The possible relationship between these increases in antioxidants and the rate of activated oxygen production in the tubers is discussed.},
doi = {10.1104/pp.94.3.1214},
url = {https://www.osti.gov/biblio/5717684}, journal = {Plant Physiology; (USA)},
issn = {0032-0889},
number = ,
volume = 94:3,
place = {United States},
year = {Thu Nov 01 00:00:00 EST 1990},
month = {Thu Nov 01 00:00:00 EST 1990}
}