Full TGIF Record # 73364
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Web URL(s):https://dl.sciencesocieties.org/publications/cs/articles/41/2/436
    Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/41/2/436
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Publication Type:
i
Refereed
Author(s):Jiang, Yiwei; Huang, Bingru
Author Affiliation:Jiang: Department of Horticulture, Forestry, and Recreation Resoruces, Kansas State University, Manhattan, KS; Huang: Department of Plant Science, Rutgers University, New Brunswick, NJ
Title:Drought and heat stress injury to two cool-season turfgrasses in relation to antioxidant metabolism and lipid peroxidation
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Source:Crop Science. Vol. 41, No. 2, March/April 2001, p. 436-442.
Publishing Information:Madison, WI: Crop Science Society of America
# of Pages:7
Keywords:TIC Keywords: Drought; Heat stress; Injuries; Cool season turfgrasses; Metabolism; Oxidation; Festuca arundinacea; Poa pratensis; Quality; Relative water content; Chlorophyll; Superoxide dismutase; Enzymes; Catalase; Antioxidants; Drought stress; Lipid absorption
Abstract/Contents:"Drought and high temperature are two major factors limiting the growth of cool-season turfgrasses during summer in many areas. The objective of the study was to examine whether the adverse effects of drought and heat alone or in combination on tall fescue (Festuca arundinacea L.) and Kentucky bluegrass (Poa pratensis L.) involve oxidative stress. Grasses were exposed to drought (withholding irrigation), heat (35°C/30°C), and combined stresses for 30 d in growth chambers. Turf quality (TQ), leaf relative water content (RWC), and chlorophyll content (Chl) decreased with prolonged drought, heat, and combined stresses for both species, but the severity of decline varied with stress type and duration. Transient increases in superoxide dismutase (SOD), ascorbate peroxidase (AP), and glutathione reductase (GR) activities occurred at 6 or 12 d of drought and the combined stresses in both species; however, the activities of all three enzymes decreased with extended periods of drought and the combined stresses. The SOD activity was not affected by heat stress alone. The activities of AP and GR were reduced after 18 d of heat stress for both species, but reductions were less than under the combined stresses. The catalase (CAT) activity continued to decrease below the control level, beginning at 12 d for drought-stressed or heat-stressed plants and 6 d for plants exposed to the combined stresses. Lipid peroxidation occurred after 18 d of stresses in both species, as indicated by the increase in malondialdehyde (MDA) content. The results suggested that injuries of drought, heat, or the combined stresses to both tall fescue and Kentucky bluegrass, as manifested by declines in TQ, RWC, and Chl, could be associated with a decrease in antioxidant enzyme activities and an increase in membrane lipid peroxidation."
Language:English
References:56
See Also:Also published as chapter 3 of Physiological and Biochemical Responses of Two Cool-Season Turfgrasses to Drought and Heat Stress, 2001, R=101553 R=101553
See Also:Other items relating to: Disasters - Drought
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jiang, Y., and B. Huang. 2001. Drought and heat stress injury to two cool-season turfgrasses in relation to antioxidant metabolism and lipid peroxidation. Crop Sci. 41(2):p. 436-442.
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https://dl.sciencesocieties.org/publications/cs/articles/41/2/436
    Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/41/2/436
    Last checked: 05/04/2017
    Requires: PDF Reader
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