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Nachmias, A., Dept. of Botany, Tel Aviv University, Tel Aviv, Israel
Barash, I., Dept. of Botany, Tel Aviv University, Tel Aviv, Israel
Solel, Z., Div. of Plant Pathology, ARO, The Volcani Center, Bet Dagan, Israel
Strobel, G.A., Dept. of Plant Pathology, Montana State University, Bozeman, MT, United States
Leaves of Rough lemon (Citrus jambhiri) were inoculated with Phoma tracheiphila or treated with mal secco toxin. The ultrastructural changes in toxin-treated leaves resembled closely those infected by the pathogen, being characterized by separation of the plasmalemma from the cell wall, vesiculation of plasmalemma, disruption of the chloroplast membrane, disorganization of thylakoids, and increase in size and number of osmiophilic droplets in the chloroplasts. The rate of photo-synthetic CO2 fixation by mesophyll protoplasts was reduced in the presence of the toxin. The toxin induced agglutination of mesophyll protoplasts of lemon only in the presence of an antiserum to the toxin. Agglutination of protoplasts was independent of the biological activity of the toxin and was inhibited by Dmannose or after mild base hydrolysis of the toxin. © 1980 Springer Science + Business Media B.V.
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Effect of mal secco toxin on lemon leaf cells
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Nachmias, A., Dept. of Botany, Tel Aviv University, Tel Aviv, Israel
Barash, I., Dept. of Botany, Tel Aviv University, Tel Aviv, Israel
Solel, Z., Div. of Plant Pathology, ARO, The Volcani Center, Bet Dagan, Israel
Strobel, G.A., Dept. of Plant Pathology, Montana State University, Bozeman, MT, United States
Effect of mal secco toxin on lemon leaf cells
Leaves of Rough lemon (Citrus jambhiri) were inoculated with Phoma tracheiphila or treated with mal secco toxin. The ultrastructural changes in toxin-treated leaves resembled closely those infected by the pathogen, being characterized by separation of the plasmalemma from the cell wall, vesiculation of plasmalemma, disruption of the chloroplast membrane, disorganization of thylakoids, and increase in size and number of osmiophilic droplets in the chloroplasts. The rate of photo-synthetic CO2 fixation by mesophyll protoplasts was reduced in the presence of the toxin. The toxin induced agglutination of mesophyll protoplasts of lemon only in the presence of an antiserum to the toxin. Agglutination of protoplasts was independent of the biological activity of the toxin and was inhibited by Dmannose or after mild base hydrolysis of the toxin. © 1980 Springer Science + Business Media B.V.
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