ISSN:
1573-1561
Keywords:
Ammonia utilization
;
l-canavanine catabolism
;
Caryedes brasiliensis
;
Coleoptera
;
Bruchidae
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract The seed predator,Caryedes brasiliensis [Bruchidae] generates appreciable ammonia in its dietary use and detoxification ofl-canavanine and its catabolic product,l-canaline.l-Canavanine is a toxic allelochemical ofDioclea megacarpa seeds, the food of the developing larvae. Bruchid beetle larvae rely upon glutamic acid dehydrogenase and glutamine synthetase to use ammonia for glutamic acid synthesis from 2-oxoglutaric acid and conversion of the former to glutamine. These reactions provide the larvae with a means for metabolically eliminating ammonia. Proline serves as a carbon skeleton source for glutamic acid formation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00989564
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