RT Journal Article
T1 Do heavy metals affect bacterial communities more in small repeated applications or in a single large application?
A1 Campillo Cora, Claudia
A1 González Feijóo, Rocío
A1 Arias Estévez, Manuel
A1 Fernández Calviño, David
K1 2303.18 Metales
K1 2511.01 Bioquímica de Suelos
K1 3308.04 Ingeniería de la Contaminación
AB Heavy metals from anthropogenic sources accumulate slowly but steadily, leading to high metal concentrationlevels in soil. However, the effect of each heavy metal on soil bacterial communities is usually assessed in laboratoriesby a single application of individually spiked metals. We evaluated the differences between singleindividual application and repeated individual applications of Cr, Cu, Ni, Pb, and Zn on bacterial communities,through pollution-induced community tolerance (PICT), using bacterial growth as the endpoint (3H-leucineincorporation method). We found that PICT development was higher when soil was spiked in individual singleapplication than individual repeated applications for Cu, Ni and Zn. In contrast, bacterial communities did notshow different tolerance between singly or repeatedly when soil was spiked with Cr. In the case of Pb any increaseof bacterial community tolerance to this metal was found despite high doses applied (up to 2000 mg kg����� 1).These results are relevant for the interpretation of the effects of heavy metals on soil microbes in order to avoidlaboratory overestimations of the real effects of heavy metals on soil microbes.
PB Journal of Environmental Management
SN 03014797
YR 2023
FD 2023-01
LK http://hdl.handle.net/11093/3974
UL http://hdl.handle.net/11093/3974
LA eng
NO Journal of Environmental Management, 325, 116494 (2023)
NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG
NO Ministerio de Economía e Competitividad | Ref. CTM2015-73422-JIN
DS Investigo
RD 18-ene-2025