%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Lattaud, C.
%A Mora, P.
%A Garvin, M.
%A Locati, Sylvain
%A Rouland, C.
%T Enzymatic digestive capabilities in geophagous earthworms : origin and activities of cellulolytic enzymes
%B 6th international symposium on earthworm ecology
%D 1999
%E Diaz Cosin, D.J.
%E Jesus, J.B.
%E Trigo, D.
%E Garvin, M.H.
%L fdi:010021118
%G ENG
%J Pedobiologia
%@ 0031-4056
%K LOMBRIC ; DIGESTION ; ENZYME LYTIQUE ; CELLULASE ; MATIERE ORGANIQUE ; SOL ; DEGRADATION DU SOL ; CULTURE DE TISSUS ; MICROFLORE ; SUBSTRAT ; CHAMPIGNON ; ETUDE EXPERIMENTALE ; ETUDE COMPARATIVE
%K CELLOBIASE
%K MEXIQUE ; VERACRUZ ; COTE D'IVOIRE ; MARTINIQUE
%K LAMTO ; SAINTE ANNE
%N 6
%P 842-850
%U https://www.documentation.ird.fr/hor/fdi:010021118
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_53-54/010021118.pdf
%V 43
%W Horizon (IRD)
%X This study compares the origin and activities of glycolytic enzymes present in the gut contents of some geophagous adult earthworms and demonstrates that all the species did not develop mutualistic relationships with the ingested microorganisms to digest soil organic matter. Although the glycolytic activities were rather weak in the earthworms studied, they possess quite a complete enzymatic system that allows to degrade root and fungal substrates available in soils. #Millsonia anomala$ Omo. from Lamto (Côte d'Ivoire) and #Hormogaster elisae$ Alvarez from El Molar (Madrid) developed a strong mutualistic earthworm-microflora digestion system for hydrolysing cellulose : cellulase produced by inested microflora is able to degrade cellulose to cellobiose, cellobiase released by the worm itself breaks down cellobiose into D-glucose. Both enzymes found in intestinal contents of #Pontoscolex corethrurus$ Müll. from Palma Sola, Veracruz (Mexico) were produced by ingested soil microflora since they were not found in gut tissue culture. On the contrary, #Polypheretima elongata$ Perr. from Sainte Anne (Martinique), #Hyperiodrilus africanus$ Bedd. and #Dichogaster terrae nigrae$ Omo. et Vld. from Lamto (Cîte d'Ivoire) possess a complete enzymatic system for hydrolyzing cellulose. They could synthesize cellulolytic enzymes, i.e. cellulase and cellobiase by themselves. In the course of their digestion, geophagous earthworms seem to display variable adaptive characters which are undoubtedly linked to the different ecological categories and niches. (Résumé d'auteur)
%B International Symposium on Earthworm Ecology
%8 1998
%$ 074FAUSOL03