Kutentha kwa madigiri 5900 Celsius ndi kuuma ngati diamondi pamodzi ndi carbon: tungsten ndichitsulo cholemera kwambiri, komabe chimakhala ndi ntchito zamoyo-makamaka mu tizilombo tokonda kutentha. Gulu lotsogozedwa ndi Tetyana Milojevic wochokera ku Faculty of Chemistry ku yunivesite ya Vienna lipoti kwa nthawi yoyamba kusagwirizana kwa microbial-tungsten pa nanometer range. Kutengera zomwe zapezedwazi, sikuti tungsten biogeochemistry, komanso kupulumuka kwa tizilombo tating'onoting'ono tating'onoting'ono tating'onoting'ono tingafufuzidwe. Zotsatira zake zidawoneka posachedwa m'magazini yotchedwa Frontiers in Microbiology.

Monga chitsulo cholimba komanso chosowa, tungsten, yokhala ndi mphamvu zodabwitsa komanso malo osungunuka kwambiri azitsulo zonse, ndi chisankho chosakayikitsa kwambiri pazachilengedwe. Tizilombo tating'ono tochepa, monga thermophilic archaea kapena cell nucleus-free microorganisms, tazolowerana ndi malo owopsa a tungsten ndikupeza njira yotengera tungsten. Kafukufuku waposachedwapa wa biochemist ndi astrobiologist Tetyana Milojevic wochokera ku dipatimenti ya Biophysical Chemistry, Faculty of Chemistry pa yunivesite ya Vienna, akuwunikira zomwe zingatheke kuti tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda tizilombo toyambitsa matenda komanso kufotokoza mawonekedwe a nanoscale tungsten-microbial interface. kutentha ndi asidi-okonda tizilombo Metallosphaera sedula wokula ndi tungsten mankhwala (Zithunzi 1, 2). Komanso ndi tizilombo tating'onoting'ono tomwe tiyesedwa kuti tipulumuke paulendo wapakati pa nyenyezi m'maphunziro amtsogolo mumlengalenga. Tungsten ikhoza kukhala chinthu chofunikira pa izi.

Kuchokera ku tungsten polyoxometalates monga zochirikiza moyo zokhala ndi moyo mpaka ku microbial bioprocessing ya tungsten ores.

Mofanana ndi ma cell a ferrous sulfide mineral cell, ma polyoxometalates (POMs) ochita kupanga amatengedwa ngati ma cell a inorganic pothandizira njira zamakina asanakhalepo ndikuwonetsa mawonekedwe a "moyo". Komabe, kufunika kwa ma POM ku njira zochiritsira moyo (mwachitsanzo, kupuma kwa tizilombo toyambitsa matenda) sikunayankhidwebe. "Pogwiritsa ntchito chitsanzo cha Metallosphaera sedula, chomwe chimamera mu asidi otentha ndikupuma kudzera muzitsulo zachitsulo, tinafufuza ngati zovuta zowonongeka zochokera kumagulu a tungsten POM zimatha kupititsa patsogolo kukula kwa M. sedula ndikupanga kuchuluka kwa ma cell ndi kugawanika," akutero Milojevic.

Asayansi adatha kuwonetsa kuti kugwiritsa ntchito magulu a POM opangidwa ndi tungsten kumathandizira kuphatikiza mitundu yosiyanasiyana ya tungsten redox m'maselo ang'onoang'ono. Ma depositi a organometallic omwe amalumikizana pakati pa M. sedula ndi W-POM adasungunuka mpaka pamlingo wa nanometer panthawi yothandizana bwino ndi Austrian Center for Electron Microscopy and Nanoanalysis (FELMI-ZFE, Graz). Zomwe tapeza zimawonjezera ma tungsten-encrusted M. sedula ku zolemba zomwe zikukula za mitundu ya tizilombo tating'onoting'ono ta biomineralized, pakati pa omwe archaea samayimiridwa kawirikawiri," adatero Milojevic. The biotransformation ya tungsten mineral scheelite yochitidwa ndi thermoacidophile M. sedula kwambiri imatsogolera kusweka kwa kapangidwe ka scheelite, solubilization ya tungsten, ndi tungsten mineralization ya microbial cell surface (Chithunzi 3). Ma biogenic tungsten carbide-ngati nanostructures omwe afotokozedwa mu kafukufukuyu akuyimira kuthekera kokhazikika kwa nanomaterial komwe kumapezeka ndi kapangidwe kazachilengedwe kothandizidwa ndi tizilombo.