J 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.

Basic information

Original name

Bioleaching of Manganese Oxides at Different Oxidation States by Filamentous Fungus Aspergillus niger

Authors

FARKAS, Bence (703 Slovakia), Marek BUJDOŠ (703 Slovakia), Filip POLÁK (203 Czech Republic), Michaela MATULOVÁ (300 Greece), Martin CESNEK (703 Slovakia), Eva DUBORSKÁ (703 Slovakia), Ondřej ZVĚŘINA (203 Czech Republic, belonging to the institution), Hyunjung KIM (410 Republic of Korea), Martin DANKO (703 Slovakia), Zuzana KISOVÁ (703 Slovakia), P. MATÚŠ and Martin URÍK (703 Slovakia, guarantor)

Edition

Journal of Fungi, Basel, MDPI, 2021, 2309-608X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10612 Mycology

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.724

RIV identification code

RIV/00216224:14110/21:00122495

Organization unit

Faculty of Medicine

UT WoS

000726354500001

Keywords in English

bioextraction; bioleaching; filamentous fungi; manganese oxide; oxalate

Tags

Tags

International impact, Reviewed
Změněno: 1/2/2022 10:30, Mgr. Tereza Miškechová

Abstract

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.