Annual ryegrass toxicity, Geographical distribution, Corynebacterium, Western Australia
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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.
Brown, A G P and Vogal, P.
"Annual ryegrass toxicity research update,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 27
, Article 2.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol27/iss1/2