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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou297.pdf
Last checked: 09/29/2008
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| Publication Type:
| Refereed |
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| Author(s): | Jiang, Y.;
Huang, B. |
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| Author Affiliation: | Jiang: Department of Horticulture, Forestry and Recreational Resources, Kansas State University, Manhattan, KS; Huang: Department of Plant Science, Rutgers University, New Brunswick, NJ |
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| Title: | Effects of calcium on physiological responses of tall fescue and Kentucky bluegrass to drought stress |
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| Section: | Physiology
Other records with the "Physiology" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 297-302. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Calcium; Physiological responses; Festuca arundinacea; Poa pratensis; Drought stress; Antioxidants; Enzymes; Lipids
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| Abstract/Contents: | "Drought stress is among the major factors limiting growth of cool-season turfgrasses during summer in many areas. The objective of this study was to investigate the effects of calcium on physiological changes and antioxidant metabolism in relation to drought tolerance in tall fescue (Festuca arundinacea L.) and Kentucky bluegrass (Poa pratensis L.). Grasses were exposed to drought stress in growth chambers, following foliar treatment with a CaCl2 solution. Turf quality, leaf relative water content, and chlorophyll content decreased with drought for both grass species, but Ca2+ treatment mitigated reductions in these parameters. The activities of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (AP), were all affected by drought stress but in different patterns, depending on the duration of drought stress. For both grass species, transient increases in SOD and AP activities occurred within the first 12 d and 6 d of drought, respectively; however, the activities of both enzymes decreased with extended periods of drought. The activity of CAT decreased to below the control level during the experimental period, beginning at 12 d of drought. During drought stress, plants treated with Ca2+ maintained higher SOD, CAT, and AP activities compared to untreated plants for both species. The extent of lipid peroxidation expressed as malondialdehyde (MDA) content increased during drought stress for both species. The Ca2+ treatment reduced the severity of lipid peroxidation in drought-stressed plants. The results indicated that exogenous Ca2+ application enhanced drought tolerance of tall fescue and Kentucky bluegrass, which could be associated with its effects on antioxidant enzyme activites and lipid peroxidation." |
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| Language: | English |
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| References: | 38 |
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| See Also: | Other items relating to: Disasters - Drought |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jiang, Y., and B. Huang. 2001. Effects of calcium on physiological responses of tall fescue and Kentucky bluegrass to drought stress. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 297-302. |
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https://archive.lib.msu.edu/tic/its/articles/2001jou297.pdf
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MSU catalog number: SB 433 .I52 v. 9 |
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