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Enzymatic dynamics into the Eisenia fetida (Savigny, 1826) gut during vermicomposting of coffee husk and market waste in a tropical environment

Ordoñez Arévalo, Flor Berenice [autora] | Guillén Navarro, Griselda Karina [autora] | Huerta Lwanga, Esperanza [autora] | Cuevas González, Raúl [autor] | Calixto Romo, María de los Ángeles [autora].
Tipo de material: Artículo en línea Artículo en línea Tipo de contenido: Texto Tipo de medio: Computadora Tipo de portador: Recurso en líneaTema(s): Eisenia fetida | Lombrices de tierra | Enzimas digestivas | Elaboración de vermicompostaTema(s) en inglés: Eisenia fetida | Earthworms | Digestive enzymes | VermicompostingNota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Environmental Science and Pollution Research. Volumen 25, número 2 (January 2018), páginas 1576-1586. --ISSN: 0944-1344Número de sistema: 58810Resumen:
Inglés

Epigeic worms modify microbial communities through their digestive processes, thereby influencing the decomposition of organic matter in vermicomposting systems. Nevertheless, the enzyme dynamics within the gut of tropically adapted earthworms is unknown, and the enzymes involved have not been simultaneously studied. The activities of 19 hydrolytic enzymes within three different sections of the intestine of Eisenia fetida were determined over a fasting period and at 24 h and 30, 60, and 90 days of vermicomposting, and data were evaluated by multivariate analyses. There were found positive correlations between the maximal activity of glycosyl hydrolases and one esterase with the anterior intestine (coincident with the reduction of hemicellulose in the substrate) and the activity of the protease α-chymotrypsin with posterior intestine. The results suggest that activities of enzymes change in a coordinated manner within each gut section, probably influenced by selective microbial enzyme enrichment and by the availability of nutrients throughout vermicomposting.

Recurso en línea: https://link.springer.com/article/10.1007%2Fs11356-017-0572-3
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Disponible para usuarios de ECOSUR con su clave de acceso

Epigeic worms modify microbial communities through their digestive processes, thereby influencing the decomposition of organic matter in vermicomposting systems. Nevertheless, the enzyme dynamics within the gut of tropically adapted earthworms is unknown, and the enzymes involved have not been simultaneously studied. The activities of 19 hydrolytic enzymes within three different sections of the intestine of Eisenia fetida were determined over a fasting period and at 24 h and 30, 60, and 90 days of vermicomposting, and data were evaluated by multivariate analyses. There were found positive correlations between the maximal activity of glycosyl hydrolases and one esterase with the anterior intestine (coincident with the reduction of hemicellulose in the substrate) and the activity of the protease α-chymotrypsin with posterior intestine. The results suggest that activities of enzymes change in a coordinated manner within each gut section, probably influenced by selective microbial enzyme enrichment and by the availability of nutrients throughout vermicomposting. eng

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