Fungi and arsenic. Tolerance and bioaccumulation by soil saprotrophic species
| Autor: | Lorenzo Massimi, Veronica Spinelli, Andrea Ceci, Silvia Canepari, Anna Maria Persiani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Siderophore 030106 microbiology chemistry.chemical_element 010501 environmental sciences 01 natural sciences lcsh:Technology lcsh:Chemistry 03 medical and health sciences Purpureocillium lilacinum Bioremediation Absidia spinosa multi-elemental analysis soil fungi General Materials Science Instrumentation Inductively coupled plasma mass spectrometry lcsh:QH301-705.5 Arsenic 0105 earth and related environmental sciences Cephalotrichum nanum Fluid Flow and Transfer Processes Chemistry lcsh:T arsenic arsenite tolerance bioaccumulation Metarhizium marquandii siderophores Process Chemistry and Technology General Engineering Soil contamination lcsh:QC1-999 Computer Science Applications Arsenic contamination of groundwater lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Bioaccumulation Environmental chemistry lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 9 Applied Sciences, Vol 10, Iss 3218, p 3218 (2020) |
| Popis: | Increasing arsenic environmental concentrations are raising worldwide concern for its impacts on human health and ecosystem functionality. In order to cope with arsenic contamination, bioremediation using fungi can represent an efficient, sustainable, and cost-effective technological solution. Fungi can mitigate arsenic contamination through different mechanisms including bioaccumulation. In this work, four soil saprotrophic fungi Absidia spinosa, Purpureocillium lilacinum, Metarhizium marquandii, and Cephalotrichum nanum, isolated from soils with naturally high arsenic concentrations, were tested for their ability to tolerate different sodium arsenite concentrations and accumulate As in different cultural conditions. pH medium after fungal growth was measured to study pH variation and metabolic responses. Arsenic bioaccumulation and its influence on the uptake of other elements were investigated through multi-elemental analysis using hydride generation atomic fluorescence spectrometry (HG-AFS), inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectroscopy (ICP-OES) . Considering the increasing interest in siderophore application for metal bioremediation, the production of siderophores and their affinity for both Fe and As were also evaluated. All species were able to tolerate and accumulate As in their biomass in all of the tested conditions and produced siderophores with different affinities for Fe and As. The results suggest that the tested fungi are attractive potential candidates for the bioremediation of As contaminated soil and worthy of further investigation. |
| Databáze: | OpenAIRE |
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