Microorganisms vs Higher Animals

Corynetoxins are produced by Corynebacterium rathayi and cause animal toxicity upon consumption of rye grass by animals. The disease is called annual rye grass toxicity. The relatedness between toxins and antibiotics was emphasized by the finding that corynetoxins and tunicamycins (known antibiotics of Streptomyces ) are identical [111]. 

Anguibactin, a siderophore of the fish pathogen, Vibrio anguillarum, is a virulence factor. When anguibactin was fed to a siderophore-deficient avirulent mutant of V. anguillarum, the mutant successfully established itself in the host fish [112]. 

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