Gardner , J.M. and Mansour, I.S. and Scheffer, R.P. (1972) Effects of the host-specific toxin of Periconia circinata on some properties of sorghum plasma membranes. Physiological Plant Pathology, 2 (3). pp. 197-206.
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Abstract
Susceptible tissues of sorghum (Sorghum vulgare) exposed to toxin from Periconia circinata had increased loss of electrolytes within 20 min; resistant sorghum tissues were not affected. Electrolyte loss from susceptible tissues increased with increases in toxin concentration from 0·1 to 100 μg/ml; the correlation was the basis for a new toxin assay. Toxin decreased the ability of tissue to take up and/or to retain amino acids from an ambient solution. Toxin also decreased the amount of amino acid incorporation into insoluble components ofthe cell. Tissues became less sensitive to toxin following 12 h exposure to cycloheximide. Similar exposures to phospholipase D and uranyl salts also decreased the sensitivity of tissues to toxin. Results show that P. circinatatoxin changes the characteristics ofthe plasma membrane, but do not prove that the membrane is the initial site oftoxin activity. Resistant sorghum cells may lack toxin receptor sites, or have sites with low affinity for toxin
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Toxins of P. circinata, PC-toxin; H. victoriae, HV-toxin; H. carbonum race 1, HC-toxin |
| Author Affiliation: | Department of Botany and Plant Pathology, Michigan State University, East Lansing 48823, U.S.A. |
| Subjects: | Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 09 Jul 2012 06:02 |
| Last Modified: | 09 Jul 2012 06:02 |
| Official URL: | http://dx.doi.org/10.1016/0048-4059(72)90002-1 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/6640 |
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