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Department of Primary Industries and Regional Development, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
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Annual Ryegrass Toxicity Research Update, A G P Brown, P. Vogal
Annual Ryegrass Toxicity Research Update, A G P Brown, P. Vogal
Journal of the Department of Agriculture, Western Australia, Series 4
Annual ryegrass toxicity (ARGT) is a complex disease that kills sheep and cattle grazing pastures which contain infected ryegrass. The disease results when a nematode (Anguina agrostis) and a batcerium (Corynebacterium sp.) invade annual ryegrass and cause the seed heads to become toxic as the grass dries off.
The bacterium produces a complex toxin of 18 glycolipid compounds or corynetoxins which have been found to be virtually identical to the antibiotic tunicamycin.