Metabolism of sugars to polyols in the boll weevil |
| |
Authors: | W.C. Nettles M.L. Burks |
| |
Affiliation: | Entomology Research Division, Agricultural Research Service, U.S. Department of Agriculture, 4115 Gourrier Avenue, Baton Rouge, Louisiana 70808, U.S.A. |
| |
Abstract: | When fed to starved adults of Anthonomus grandis, several pentoses and hexoses were metabolized to the corresponding polyols (sugar alcohols). Xylitol, galactitol, arabitol, ribitol, rhamnitol, mannitol, and sorbitol were metabolites of d-xylose, d-galactose and lactose, d-arabinose, d-ribose, l-rhamnose, d-mannose, and d-glucose and d-fructose, respectively. l-Sorbose was not metabolized to a polyol. Large quantities of xylitol and galactitol and intermediate amounts of arabitol, ribitol, and rhamnitol accumulated while only small amounts or traces of mannitol and sorbitol were detected. The limited accumulation of sorbitol in the glucose- and fructose-fed weevils probably was caused by the rapid metabolism of sorbitol to glucose, fructose, trehalose, and glycogen. Each of the ingested sugars, the corresponding polyols, and trehalose were present in the weevil haemolymph. Most of the polyols had never before been detected as metabolites in an insect. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|