Potential nitrification, nitrate reductase, and β-galactosidase activities as indicators of restoration of ecological functions in a Zn-contaminated soil
Articolo
Data di Pubblicazione:
2012
Citazione:
Potential nitrification, nitrate reductase, and β-galactosidase activities as indicators of restoration of ecological functions in a Zn-contaminated soil / M. Trevisan, D. Coppolecchia, R. Hamon, E. Puglisi. - In: BIOLOGY AND FERTILITY OF SOILS. - ISSN 0178-2762. - 48:8(2012 Nov), pp. 923-931. [10.1007/s00374-012-0684-3]
Abstract:
The present study was conducted to assess the
possible restoration of different ecological functions in a Zncontaminated
soil. Experiments were conducted in a soil
microcosm contaminated with 350 mg kg−1 of Zn and in
an uncontaminated control microcosm, both incubated for
4 months. At regular intervals, potential nitrification, nitrate
reductase, and β-galactosidase activity were determined. All
these activities were significantly reduced just after Zn
contamination in contaminated microcosms compared to
the activities of the control, but then increased. In order
to confirm that the restoration of ecological functions
was not due to an aging phenomenon, a reinoculation
protocol was also applied. A significant restoration was
found for β-galactosidase activity, while for nitrate reductase
activity and potential nitrification, there was a
clear shift of dose–response curves but with partial overlap
of the EC50 ranges estimation, thus indicating that
different ecological functions are restored over time in
Zn-contaminated soils.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Nitrification ; nitrate reductase ;
β-Galactosidase ; zinc ; soil
Elenco autori:
M. Trevisan, D. Coppolecchia, R. Hamon, E. Puglisi
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