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Pyrrolizidine alkaloid plants, metabolism and toxicity.
More than 350 PAs have been identified in over 6,000 plants in the Boraginaceae, Compositae, and Leguminosae families (Table 1). About half of the identified PAs are toxic and several have been shownExpand
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Host plant utilization and iridoid glycoside sequestration byEuphydryas anicia (Lepidoptera: Nymphalidae)
The iridoid glycoside content of individual adultEuphydryas anicia butterflies from two Colorado populations was quantitatively determined. At one site (Red Hill), larval host plants wereCastillejaExpand
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Pyrrolizidine alkaloids in Senecio madagascariensis from Australia and Hawaii and assessment of possible livestock poisoning
The alkaloid content of Senecio madagascariensis collected from Australia and Hawaii was examined. Alkaloids were identified from the above ground whole plant (stems, leaves and flowers) by GC/MSExpand
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Identification of swainsonine as a glycoside inhibitor responsible for Sida carpinifolia poisoning.
The indolizidine alkaloid swainsonine has been identified as the toxic constituent of Sida carpinifolia, a native perennial shrub-like plant, reported to produce neurological disorders in goats andExpand
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Study of Biochemical Pathways and Enzymes Involved in Pyrene Degradation by Mycobacterium sp. Strain KMS
ABSTRACT Pyrene degradation is known in bacteria. In this study, Mycobacterium sp. strain KMS was used to study the metabolites produced during, and enzymes involved in, pyrene degradation. SeveralExpand
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Temporal and Spatial Variation in Alkaloid Levels in Achnatherum robustum, a Native Grass Infected with the Endophyte Neotyphodium
The native North American perennial grass Achnatherum robustum (Vasey) Barkworth [= Stipa robusta (Vasey) Scribn.] or sleepygrass is toxic and narcotic to livestock. The causative agents areExpand
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The effect of administering multiple doses of tall larkspur (Delphinium barbeyi) to cattle.
Larkspurs ( spp.) are one of the most serious toxic plant problems on foothill and mountain rangelands in the western United States. A considerable amount of research has been conducted over theExpand
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Analysis of swainsonine: extraction methods, detection, and measurement in populations of locoweeds (Oxytropis spp.).
An analytical method has been developed to measure the locoweed toxin, swainsonine, in locoweed plant material. Dry ground plant samples were extracted using a small-scale liquid/liquid extractionExpand
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Relationship Between the Endophyte Embellisia spp. and the Toxic Alkaloid Swainsonine in Major Locoweed Species (Astragalus and Oxytropis)
Locoweeds (Astragalus and Oxytropis spp. that contain the toxic alkaloid swainsonine) cause widespread poisoning of livestock on western rangelands. There are 354 species of Astragalus and 22 speciesExpand
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The toxicity and kinetics of larkspur alkaloid, methyllycaconitine, in mice.
Larkspur poisoning sporadically kills from 5 to 15% of the cattle on North American mountain rangelands. Of the 40 different diterpenoid larkspur alkaloids, the one that is thought to be responsibleExpand
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