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Nitro Compounds in Foreign Species of Astragalus

Published online by Cambridge University Press:  12 June 2017

M. C. Williams
M. C. Williams*
Affiliation:
U.S. Dep. Agric., Sci. Ed. Admin., Agric. Res., Poisonous Plant Res. Lab., Logan, UT 84321
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Abstract

Leaflets of 1690 species of Old World and South American Astragalus collected from herbaria at Kew, England; Edinburgh, Scotland; Munich, Germany; and Vienna, Austria were analyzed qualitatively for toxic aliphatic nitro compounds. The catabolites of nitro compounds found in species of Astragalus (nitro-bearing), 3-nitro-1-propanol and 3-nitropropionic acid, are especially toxic to cattle and sheep. A total of 190 of 1624 (12%) Old World species, 30 of 66 (45%) South American species, and a single species of one Astragalus subgenus were positive for nitro compounds. Most Old World species that contained aliphatic nitro compounds were collected in the Middle East and the Union of Soviet Socialist Republics. Nitro compounds were detected in specimens of eight species collected between 1822 and 1836. The nitro-bearing species were chemotaxonomically related and grouped within taxonomic sections. The presence of two or three nitro-bearing species within a section indicated that other species within the same section might also be nitro-bearing.

Keywords

Fabaceaepoisonous plants3-nitro-1-propanol3-nitropropionic acidchemotaxonomy
Type
Research Article
Information
Weed Science , Volume 29 , Issue 3 , May 1981 , pp. 261 - 269
Copyright
Copyright © Weed Science Society of America 

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References

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