Detrimental effects of 2,5‐Dihydroxymethyl‐3,4‐dihydroxypyrrolidine in some tropical legume seeds on larvae of the bruchid Callosobruchus maculatus
- 1 May 1985
- journal article
- research article
- Published by Wiley in Entomologia Experimentalis et Applicata
- Vol. 37 (3) , 257-261
- https://doi.org/10.1111/j.1570-7458.1985.tb03483.x
Abstract
The secondary plant compound 2,5‐Dihydroxymethyl‐3,4‐dihydroxypyrrolidine (DMDP), an analogue of β‐D‐fructofuranose, is lethal to the larvae of the bruchid beetle Callosobruchus maculatus F. when incorporated into artificial diets at levels greater than 0.03%. In the range 0.003% to 0.03% the compound reduces larval survival in a dose‐dependent manner. The α‐D‐glucosidase digestive enzyme demonstrated in homogenates of the alimentary tract of the larvae is strongly inhibited by the compound in a competitive manner.RÉSUMÉ: Toxicité de la substance secondaire 2,5‐Dihydroxyméthyl‐3,4‐dihydroxypyrrolidine pour les larves de Callosobruchus maculatus et effets sur les carbohydrases digestive des larvesLa substance secondaire 2,5‐dihydroxyméthyl‐3,4‐dihydroxypyrrolidine (DMDP), analogue du β‐fructofuranose, est létale pour les larves de C. maculatus lorsqu'elle est incorporée dans des régimes alimentaires à des taux supérieurs à 0,03%. Entre 0.003% et 0.03%, la substance réduit la survie larvaire proportionnellement à la dose. L'enzyme digestive α‐D‐glucosidase observée dans les homogénats du tube digestif de la larve est fortement inhibée par la substance d'une façon compétitive.Keywords
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