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| Web URL(s): | http://www.apsnet.org/publications/phytopathology/backissues/Documents/1983Articles/Phyto73n05_737.PDF
Last checked: 08/26/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Madsen, J. P.;
Hodges, C. F. |
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| Author Affiliation: | Madsen: Postdoctoral Research Fellow, Department of Agronomy, University of Kentucky, Lexington, Kentucky; Hodges: Professor, Horticulture and Plant Pathology, Department of Horticulture, Iowa State University, Ames, Iowa |
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| Title: | Soluble sugars and free amino acids of Poa pratensis exposed to chlorophenoxy herbicides and pathogenesis by Drechslera sorokiniana |
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| Section: | Physiology and biochemistry
Other records with the "Physiology and biochemistry" Section
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| Source: | Phytopathology. Vol. 73, No. 5, May 1983, p. 737-740. |
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| Publishing Information: | Worcester, Mass. |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Amino acids; Bipolaris sorokiniana; Chlorophenoxy herbicides; Disease severity; Fenoprop; Leaf spot; Mecoprop; Poa pratensis; Postemergence herbicides; Sugars
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| Abstract/Contents: | "The influence was evaluated of two postemergence herbicides, 2-(2-methyl-4-chlorophenoxy)propionic acid (MCPP) and 2-(2,4,5-trichlorophenoxy)propionic acid (2,4,5-TP), on total and individual soluble sugars and free amino acids of leaves of herbicide-tolerant Poa pratensis and on the severity of leaf spot induced by Drechslera sorokiniana. The incidence of leaf spot of plants growing in soil treated with MCPP was more severe than leaf spot of the untreated controls. 2,4,5-TP had no influence on the severity of the leaf spot. Leaves of plants growing in soil treated with either herbicide had lower sucrose and total sugar amounts than did control leaves. The decrease in sucrose and total soluble sugars in uninoculated leaves of herbicide-treated plants was significantly correlated with increased leaf spot severity of inoculated leaves of herbicide-treated plants. No differences existed in sugar content among infected leaves of control or herbicide-treated plants. The results are discussed relative to previous classification of Drechslera leaf spot on P. pratensis as a "low sugar" disease. MCPP and 2,4,5-TP had little effect on the total free amino acids in uninoculated leaves. Inoculated leaves of control and MCPP-treated plants had greater amounts of total free amino acids than did uninoculated leaves of respective plants. No difference existed in total free amino acid content between uninoculated and inoculated leaves of 2,4,5-TP-treated plants. No meaningful significant correlations existed between free amino acid content and leaf spot severity." |
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| Language: | English |
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| References: | 37 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Madsen, J. P., and C. F. Hodges. 1983. Soluble sugars and free amino acids of Poa pratensis exposed to chlorophenoxy herbicides and pathogenesis by Drechslera sorokiniana. Phytopathology. 73(5):p. 737-740. |
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| Web URL(s):
http://www.apsnet.org/publications/phytopathology/backissues/Documents/1983Articles/Phyto73n05_737.PDF
Last checked: 08/26/2010
Requires: PDF Reader |
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MSU catalog number: SB 599 .P48 |
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