Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/16264
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Influence of cadmium on the metabolic quotient, l - : d -glutamic acid respiration ratio and enzyme activity : microbial biomass ratio under laboratory conditions |
Autor: | Landi, L.; Renella, G.; Moreno-Ortego, Jose Luis CSIC ORCID ; Falchini, L.; Nannipieri, P. | Palabras clave: | L- :D-glutamic acid respiration ratio Metabolic quotient Enzyme activity Cadmium availability |
Fecha de publicación: | oct-2000 | Editor: | Springer Nature | Citación: | Biology and Fertility of Soils 32(1): 8-16 (2000) | Resumen: | This study was carried out to investigate the effect of very high cadmium concentrations (50 and 500 μg Cd g–1 soil) on some biochemical and microbiological measurements under laboratory conditions involving daily soil samplings. The data for both DTPA- and water-soluble Cd showed two distinctive patterns during soil incubation; from 0 to 4 days, values were about 50–500 and 1–100 μg g–1 dry weight soil, whereas they decreased markedly after 7 days. Both daily respiration and the ATP content but not the microbial biomass C determined by the fumigation–extraction method were lowered by high DTPA- and water-soluble Cd concentrations. Dehydrogenase and phosphatase activities as well as both enzyme activity : microbial biomass ratios were decreased by the high DTPA- and water-soluble Cd concentrations. In the first 2 days of incubation, the metabolic quotient (qCO2) was also decreased by the highest values of available Cd. The early (after 6 h) mineralization of l- but not d-glutamic acid to CO2 was inhibited during the 0–4 day incubation period by the highest Cd concentration. Possibly the l-enantiomer was used by a larger fraction of soil microorganisms than the d-enantiomer or, if they were used by the same fraction of soil microorganisms, the d-enantiomer was mineralized at a lower rate. The l- : d-glutamic acid respiration ratio was decreased by the high available Cd content because under polluted conditions soil microorganisms probably discriminated less between the two stereoisomers of glutamic acid. | Descripción: | 9 pages, 6 tables, 1 figure. | Versión del editor: | http://dx.doi.org/10.1007/s003740000205 | URI: | http://hdl.handle.net/10261/16264 | DOI: | 10.1007/s003740000205 | ISSN: | 0178-2762 | E-ISSN: | 1432-0789 |
Aparece en las colecciones: | (CEBAS) Artículos |
Mostrar el registro completo
CORE Recommender
SCOPUSTM
Citations
147
checked on 20-abr-2024
WEB OF SCIENCETM
Citations
138
checked on 27-feb-2024
Page view(s)
327
checked on 24-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.