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Web URL(s): | http://www.jstor.org/stable/2557720?seq=1#page_scan_tab_contents Last checked: 05/15/2017 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Buckland, Sarah M.;
Price, Adam H.;
Hendry, George A. F. |
Author Affiliation: | Buckland and Hendry: NERC Unit of Comparative Plant Ecology, Department of Animal and Plant Sciences, The University, Sheffield, United Kingdom; and Price: Ysgol Gwyddorau Biolegol, Coleg Prifysgol Gegledd Cymru, Bangor, Gwynedd, United Kingdom |
Title: | The role of ascorbate in drought-treated Cochlearia atlantica Pobed. and Armeria maritima (Mill.) Willd. |
Source: | New Phytologist. Vol. 119, No. 1, September 1991, p. 155-160. |
Publishing Information: | Oxford, England: Cambridge University Press. |
# of Pages: | 6 |
Keywords: | TIC Keywords: Ascorbic acid; Drought; Antioxidants; Enzymes; Superoxide dismutase; Peroxidase
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Abstract/Contents: | "Cochlearia atlantica is a species rich in ascorbic acid. After 4 days of intermittent drought treatment, there was a large decrease in the concentration of ascorbate and glutathione, functioning probably as radical scavengers (anti-oxidants). Although there was no increase in lipid peroxidation (a marker of oxygen radical damage), drought treatment did result in the destruction of chlorophyll and a decrease in protein. This species showed little or no change in the activities of five enzymes usually associated with the processing of, and protection from, activated forms of oxygen. Armeria maritima showed similar decrease in relative water content and dry weight after droughting, but a quantitatively smaller decrease in ascorbate with no loss of glutathione. Instead a major response to drought, in this species, was the marked increase in the activities of superoxide dismutase and peroxidase. Despite these increases in enzymic defences [defenses] against oxygen radicals, drought treatment resulted in increased lipid peroxidation in A. maritima. It is concluded that ascorbic acid and gluthathione may play a significant role in the response to drought in C. atlantica but protection in A. maritima is largely through enzymic processing of activated forms of oxygen." |
Language: | English |
References: | 30 |
Note: | Tables Summary as Abstract |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Buckland, S. M., A. H. Price, and G. A. F. Hendry. 1991. The role of ascorbate in drought-treated Cochlearia atlantica Pobed. and Armeria maritima (Mill.) Willd.. New Phytol. 119(1):p. 155-160. |
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| MSU catalog number: QK 1 .N38 |
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