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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2013jou475.pdf
Last checked: 07/06/2015
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| Publication Type:
| Refereed |
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| Author(s): | Tian, Yang;
Moss, Justin Q.;
Maness, Niels O.;
Dunn, Bruce L.;
Deng, Shiping;
Bell, Gregory E. |
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| Author Affiliation: | Tian, Moss, Maness, Dunn and Bell: Dept of Horticulture and Landscape Architecture; Deng: Dept. of Plant and Soil Science, Oklahoma State University, Stillwater, OK |
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| Title: | Organic acid changes in bermudagrass root exudates under aluminum stress |
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| Section: | Physiology and stress physiology
Other records with the "Physiology and stress physiology" Section
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| Meeting Info.: | Beijing, China: July 14-19, 2013 |
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| Source: | International Turfgrass Society Research Journal. Vol. 12, 2013, p. 475-483. |
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| Publishing Information: | Madison, Wisconsin: International Turfgrass Society |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Aluminum; Cynodon dactylon; Organic acids; Oxalic acid; Root exudates; Stress response; Toxicological assessment
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| Cultivar Names: | Princess-77 |
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| Abstract/Contents: | "Aluminum (Al) toxicity in acidic soils is a common problem in turfgrass areas of Oklahoma and the United States. The objective of this study was to evaluate organic acid changes of 'Princess-77' bermudagrass root exudates under Al stress. Replicated Al treatments were applied at 100 mg/L and 200 mg/L to bermudagrass growing in 4.5 pH sand and untreated control plants were grown in 4.5 and 7.0 pH sand. Oxalic acid accounted for 11 % of the total organic acid concentration in root tissues compared to 63% collected in root exudates, which may indicate the specific response of oxalic acid to external Al stress. Al accumulated in shoot tissues at concentrations of 1214 mg/kg and 2261 mg/kg with 100 mg/L and 200 mg/L Al treatment, respectively. There was a significant (P = 0.01) negative linear relationship (r2 = 0.61) between Al leaf accumulation and bermudagrass root mass where root mass decreased as Al accumulation increased. Oxalic acid was the dominant acid found in root exudates accounting for 51-81 % of total organic acids and the exudation rate had a significant (P = 0.01) positive linear relationship (r2 = 0.78) with external Al concentrations. Citric acid was induced by Al stress and a higher exudation rate was detected at 100 mg/L Al. The average exudation rate of malic acid also increased under Al treatment compared to the control treatments. The results indicate that organic acid exudation may play a role in Al tolerance of bermudagrass." |
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| Language: | English |
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| References: | 57 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Tian, Y., J. Q. Moss, N. O. Maness, B. L. Dunn, S. Deng, and G. E. Bell. 2013. Organic acid changes in bermudagrass root exudates under aluminum stress. Int. Turfgrass Soc. Res. J. 12:p. 475-483. |
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| Web URL(s):
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MSU catalog number: b2394179 |
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