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Bacterial 16S ribosomal DNA analysis of pyrrolizidine alkaloid detoxifying enrichments from the ovine rumenGray, Diane R. 05 February 1998 (has links)
Bacterial cultures enriched from sheep rumen fluid have demonstrated the ability
to detoxify pyrrolizidine alkaloids (seneciphylline and jacobine) in tansy ragwort
(Senecio jacobaea). The microbes are difficult to isolate using classical anaerobic
techniques, therefore, microbes from two different enrichment cultures demonstrating
similar degradation activity were identified using their 16S ribosomal RNA genes. Gene
sequences from a rich medium enrichment were matched to Clostridium bifermentans,
Prevotella ruminicola, Escherichia coif, and from a minimal medium enrichment to, C.
clostridiiforme, C. aminophilum, Streptococcus bovis, and Butyrivibrio fibrosolvens.
There were no identical organisms between the two libraries, but the common genus was
Clostridium. / Graduation date: 1998
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Evaluation of endophyte-infected tall fescue products, their interaction with Senecio jacobaea in ruminants, and detoxification of alkaloids by ammoniation or ensiling after grindingDebessai, Woldu T. 26 August 1997 (has links)
Graduation date: 1998
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