SwePub - search: id:"swepub:oai:lup.lub.lu.se:6...

Enumeration	Reference	Cover	Find
1.	Fernández-Calviño, David, et al. (author) Ecotoxicological assessment of propiconazole using soil bacterial and fungal growth assays 2017 In: Applied Soil Ecology. - : Elsevier BV. - 0929-1393. ; 115, s. 27-30 Journal article (peer-reviewed)abstract Effects of the fungicide propiconazole on soil microorganisms were tested using [3H] leucine incorporation and [14C] acetate in ergosterol incorporation to measure bacterial and fungal growth inhibition, respectively. Growth was compared to basal respiration (BR) and substrate-induced respiration (SIR) in soil microcosms established according to the OECD 217 guideline. Fungal growth was most sensitive with IC50 values remaining around 300 mg kg−1 during 40 days of incubation. SIR was initially less sensitive (IC50 1300 mg kg−1), but IC50 values progressively decreased over time to reach 380 mg kg−1 after 40 days. Bacterial growth was affected at concentrations ≥200 mg kg−1, but exhibited more complex dose-response relationships possibly due to a combination of direct toxicity, bacterial community adaptation, and competitive release from the more severely affected fungi. BR was either stimulated or not affected by propiconazole. Our results indicate that group-specific endpoints targeting microbial growth will improve ecotoxicological assessment of toxicants for environmental risk assessment.

Fernández-Calviño, David, et al. (author)
Ecotoxicological assessment of propiconazole using soil bacterial and fungal growth assays
2017
In: Applied Soil Ecology. - : Elsevier BV. - 0929-1393. ; 115, s. 27-30
Journal article (peer-reviewed)abstract
- Effects of the fungicide propiconazole on soil microorganisms were tested using [3H] leucine incorporation and [14C] acetate in ergosterol incorporation to measure bacterial and fungal growth inhibition, respectively. Growth was compared to basal respiration (BR) and substrate-induced respiration (SIR) in soil microcosms established according to the OECD 217 guideline. Fungal growth was most sensitive with IC50 values remaining around 300 mg kg−1 during 40 days of incubation. SIR was initially less sensitive (IC50 1300 mg kg−1), but IC50 values progressively decreased over time to reach 380 mg kg−1 after 40 days. Bacterial growth was affected at concentrations ≥200 mg kg−1, but exhibited more complex dose-response relationships possibly due to a combination of direct toxicity, bacterial community adaptation, and competitive release from the more severely affected fungi. BR was either stimulated or not affected by propiconazole. Our results indicate that group-specific endpoints targeting microbial growth will improve ecotoxicological assessment of toxicants for environmental risk assessment.

Träfflista för sökning "id:"swepub:oai:lup.lub.lu.se:6afe5b77-23b6-41c9-bf3b-01f7c5cf661d" "