Sebaka se belang sa likhato tse 5900 tsa Celsius le boima bo kang ba daemane bo kopantsoeng le carbon: tungsten ke tšepe e boima ka ho fetisisa, leha ho le joalo e na le mesebetsi ea likokoana-hloko-haholo-holo ho likokoana-hloko tse ratang mocheso.Sehlopha se etelletsoeng pele ke Tetyana Milojevic ho tsoa Lefapheng la Khemistri Univesithing ea Vienna se tlaleha ka lekhetlo la pele litšebelisano tse sa tloaelehang tsa microbial-tungsten sebakeng sa nanometer.Ho ipapisitsoe le liphuputso tsena, ha se feela tungsten biogeochemistry, empa hape le ho phela ha likokoana-hloko tse maemong a ka ntle a sepaka-pakeng ho ka batlisisoa.Liphetho li hlahile haufinyane koranteng ea Frontiers in Microbiology.

Joaloka tšepe e thata le e sa tloaelehang, tungsten, e nang le thepa e sa tloaelehang le sebaka se phahameng ka ho fetisisa sa ho qhibiliha ho feta litšepe tsohle, ke khetho e ke keng ea etsahala bakeng sa tsamaiso ea likokoana-hloko.Ke likokoana-hloko tse seng kae feela, tse kang thermophilic archaea kapa cell nucleus-free microorganisms, li ikamahanya le maemo a feteletseng a tikoloho ea tungsten 'me li fumane mokhoa oa ho kopanya tungsten.Liphuputso tse peli tsa morao-rao tse entsoeng ke setsebi sa biochemist le astrobiology Tetyana Milojevic ho tsoa Lefapheng la Biophysical Chemistry, Faculty of Chemistry Univesithing ea Vienna, li fane ka leseli mabapi le karolo e ka bang teng ea likokoana-hloko tikolohong e ruileng ea tungsten le ho hlalosa sebopeho sa nanoscale tungsten-microbial interface e feteletseng. mocheso- le acid e ratang microorganism Metallosphaera sedula hōlileng ka tungsten metsoako (Figures 1, 2).Hape ke microorganism ena e tla lekoa bakeng sa ho phela nakong ea maeto a linaleli lithutong tse tlang tikolohong ea sepakapaka.Tungsten e ka ba ntlha ea bohlokoa ho sena.

Ho tloha ho tungsten polyoxometalates joalo ka lits'ebetso tse bolokang bophelo ho isa ho bioprocessing ea likokoana-hloko tsa tungsten ores.

Joalo ka lisele tsa ferrous sulfide mineral, artificial polyoxometalates (POMs) li nkuoa e le lisele tsa inorganic ho thusa lits'ebetso tsa lik'hemik'hale tsa pele ho bophelo le ho bonts'a litšoaneleho tsa "bophelo".Leha ho le joalo, bohlokoa ba li-POM mekhoeng ea ho boloka bophelo (mohlala, ho phefumoloha ha likokoana-hloko) ha bo so ka bo rarolloa."Re sebelisa mohlala oa Metallosphaera sedula, e hōlang ka acid e chesang 'me e phefumoloha ka oxidation ea tšepe, re ile ra batlisisa hore na litsamaiso tse rarahaneng tsa inorganic tse thehiloeng ho lihlopha tsa tungsten POM li ka boloka kholo ea M. sedula le ho hlahisa ho ata ha lisele le ho arohana," ho bolela Milojevic.

Bo-rasaense ba khonne ho bontša hore tšebeliso ea lihlopha tsa POM tse thehiloeng ho tungsten tse thehiloeng ho tungsten li nolofalletsa ho kenngoa ha mefuta e sa tšoaneng ea tungsten redox liseleng tsa likokoana-hloko.Li-depositi tsa organometallic tse lipakeng tsa M. sedula le W-POM li ile tsa qhaloa ho fihla boemong ba nanometer nakong ea tšebelisano e ntle le Setsi sa Austria sa Electron Microscopy and Nanoanalysis (FELMI-ZFE, Graz).Liphuputso tsa rona li eketsa M. sedula e kentsoeng ka tungsten ho lirekoto tse ntseng li hōla tsa mefuta ea likokoana-hloko tse nang le biomineralized, tseo har'a tsona li-archaea li emeloa ka seoelo, "ho boletse Milojevic.The biotransformation ea tungsten mineral scheelite e entsoeng ke thermoacidophile e feteletseng M. sedula e lebisa ho senyeha ha sebopeho sa scheelite, solubilization e latelang ea tungsten, le tungsten mineralization ea microbial cell surface (Setšoantšo sa 3).Li-nanostructures tse kang li-biogenic tungsten carbide tse hlalositsoeng thutong li emela li-nanomaterial tse ka tšoarellang tse fumanoeng ke moralo o thusang tikoloho o thusang likokoana-hloko.