2021
Bioleaching of Manganese Oxides at Different Oxidation States by Filamentous Fungus Aspergillus niger
FARKAS, Bence, Marek BUJDOŠ, Filip POLÁK, Michaela MATULOVÁ, Martin CESNEK et. al.Základní údaje
Originální název
Bioleaching of Manganese Oxides at Different Oxidation States by Filamentous Fungus Aspergillus niger
Autoři
FARKAS, Bence (703 Slovensko), Marek BUJDOŠ (703 Slovensko), Filip POLÁK (203 Česká republika), Michaela MATULOVÁ (300 Řecko), Martin CESNEK (703 Slovensko), Eva DUBORSKÁ (703 Slovensko), Ondřej ZVĚŘINA (203 Česká republika, domácí), Hyunjung KIM (410 Korejská republika), Martin DANKO (703 Slovensko), Zuzana KISOVÁ (703 Slovensko), P. MATÚŠ a Martin URÍK (703 Slovensko, garant)
Vydání
Journal of Fungi, Basel, MDPI, 2021, 2309-608X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10612 Mycology
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.724
Kód RIV
RIV/00216224:14110/21:00122495
Organizační jednotka
Lékařská fakulta
UT WoS
000726354500001
Klíčová slova anglicky
bioextraction; bioleaching; filamentous fungi; manganese oxide; oxalate
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 1. 2. 2022 10:30, Mgr. Tereza Miškechová
Anotace
V originále
This work aimed to examine the bioleaching of manganese oxides at various oxidation states (MnO, MnO·Mn2O3, Mn2O3 and MnO2) by a strain of the filamentous fungus Aspergillus niger, a frequent soil representative. Our results showed that the fungus effectively disintegrated the crystal structure of selected mineral manganese phases. Thereby, during a 31-day static incubation of oxides in the presence of fungus, manganese was bioextracted into the culture medium and, in some cases, transformed into a new biogenic mineral. The latter resulted from the precipitation of extracted manganese with biogenic oxalate. The Mn(II,III)-oxide was the most susceptible to fungal biodeterioration, and up to 26% of the manganese content in oxide was extracted by the fungus into the medium. The detected variabilities in biogenic oxalate and gluconate accumulation in the medium are also discussed regarding the fungal sensitivity to manganese. These suggest an alternative pathway of manganese oxides’ biodeterioration via a reductive dissolution. There, the oxalate metabolites are consumed as the reductive agents. Our results highlight the significance of fungal activity in manganese mobilization and transformation. The soil fungi should be considered an important geoactive agent that affects the stability of natural geochemical barriers.