About Lesson
Host specific |
Non-host specific |
1. Selectively toxic only to susceptible host of the pathogen |
1. No host specificity and can also affect the physiology of those plants that are normally not infected by the pathogen |
2. Primary determinants of disease |
2. Secondary determinants of disease |
3. Produce all the essential symptoms of the disease |
3. Produce few or none of the symptoms of the disease |
4. Ex: Victorin, T- toxin |
4. Ex: Tentoxin, Tabtoxin |
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