PURIFICATION AND CHARACTERIZATION OF TOXINS FROM WHEAT ISOLATES OF Drechslera tritici-repentis, Bipolaris bicolor, AND Bipolaris sorokiniana
Open Access
- 1 January 1999
- journal article
- Published by FapUNIFESP (SciELO) in Journal of Venomous Animals and Toxins including Tropical Diseases
- Vol. 5 (2), 184-199
- https://doi.org/10.1590/s0104-79301999000200006
Abstract
Low molecular weight metabolites produced by Bipolaris bicolor, Bipolaris sorokiniana, and Drechslera tritici-repentis are considered to be toxins that facilitate disease in wheat cultivars. Several such toxins were isolated from these fungi. Electrophoresis demonstrated bands of proteins that reduced shoot inhibition in susceptible plants but not in resistant plants. Chlorophyll content was reduced during the first 10 hours of light in the susceptible plants and after 18 hours in the resistant plants. The enzyme beta-1,3-glucanase increased in the resistant plants after treatment with toxins, but in the susceptible plants this enzyme decreased compared to the control. This suggests that the toxin was a protein and the susceptible plants needed other mechanisms for induced resistanceKeywords
This publication has 15 references indexed in Scilit:
- Evidence of a Host-Specific Chlorosis Toxin fromPyrenophora tritici-repentis,the Causal Agent of Tan Spot of WheatPhytopathology®, 1995
- Production of a Chlorosis‐Inducing, Host‐Specific, Low‐Molecular Weight Toxin by Isolates of Pyrenophora tritici‐repentis Cause of Tan Spot of WheatJournal of Phytopathology, 1993
- Identification of Several Pathogenesis-Related Proteins in Tomato Leaves Inoculated with Cladosporium fulvum (syn. Fulvia fulva) as 1,3-β-Glucanases and ChitinasesPlant Physiology, 1989
- Toxin ofPyrenophora tritici-repentis: Host-Specificity, Significance in Disease, and Inheritance of Host ReactionPhytopathology®, 1989
- Interaction of Wet Period and Temperature onPyrenophora tritici-repentisInfection and Development in Wheats of Differing ResistancePhytopathology®, 1987
- Cultivar-Specific Toxicity of Culture Filtrates ofPyrenophora tritici-repentisPhytopathology®, 1987
- Infection of Wheat and Oats byPyrenophora tritici-repentisand Initial Characterization of ResistancePhytopathology®, 1986
- Host-Selective Toxins and Their Role in Plant DiseasesScience, 1984
- The phenolic constituents of Prunus domestica. I.—The quantitative analysis of phenolic constituentsJournal of the Science of Food and Agriculture, 1959
- TOXIN PRODUCTION BY HELMINTHOSPORIUM SATIVUM P.K. & B. AND ITS SIGNIFICANCE IN DISEASE DEVELOPMENTCanadian Journal of Botany, 1957