Estimation of baseline levels of bacterial community tolerance to Cr, Ni, Pb, and Zn in unpolluted soils, a background for PICT (pollution-induced community tolerance) determination
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Campillo Cora, Claudia; Soto Gómez, Diego; Arias Estévez, Manuel; Bååth, Erland; Fernández Calviño, DavidÁrea de conocimiento
Fisiología VegetalIngeniería del TerrenoProducción VegetalPatrocinadores
This study has been funded by the Spanish Ministry of Economy and Competitiveness through the project CTM2015-73422-JIN (FEDER Funds). David Fernández-Calviño holds a Ramón y Cajal contract (RYC-2016–20411) fnanced by the Spanish Ministry of Economy, Industry and Competitiveness. Claudia CampilloCora holds a predoctoral fellowship fnanced by Xunta de Galicia (ED481A-2020/084). Diego Soto-Gómez was supported by a postdoctoral fellowship from the Spanish Ministry of Education “Juan de la Cierva Formación (FJC2019-039176-I).”Realizado en/con
Universidad Politécnica de Cartagena; Universidad de Vigo; Universidad de LundFecha de publicación
2021-11-30Editorial
Springer NatureCita bibliográfica
Campillo-Cora, C., Soto-Gómez, D., Arias-Estévez, M. et al. Estimation of baseline levels of bacterial community tolerance to Cr, Ni, Pb, and Zn in unpolluted soils, a background for PICT (pollution-induced community tolerance) determination. Biol Fertil Soils 58, 49–61 (2022). https://doi.org/10.1007/s00374-021-01604-xRevisión por pares
SIPalabras clave
Bacterial growthLeucine incorporation
Heavy metals
Geochemical baseline level
Co-tolerance
Resumen
The PICT method (pollution-induced community tolerance) can be used to assess whether changes in soil microbial response are due to heavy metal toxicity or not. Microbial community tolerance baseline levels can, however, also change due to variations in soil physicochemical properties. Thirty soil samples (0–20 cm), with geochemical baseline concentrations (GBCs) of heavy metals and from five different parent materials (granite, limestone, schist, amphibolite, and serpentine), were used to estimate baseline levels of bacterial community tolerance to Cr, Ni, Pb, and Zn using the leucine incorporation method. General equations (n = 30) were determined by multiple linear regression using general soil properties and parent material as binary variables, explaining 38% of the variance in log IC50 (concentration that inhibits 50% of bacterial growth) values for Zn, with 36% for Pb, 44% for Cr, and 68% for Ni. The use of individual equations for each parent material increased the explained ...
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