Wurin tafasa na 5900 ma'aunin Celsius da taurin lu'u-lu'u kamar lu'u-lu'u a hade tare da carbon: tungsten shine karfe mafi nauyi, duk da haka yana da ayyuka na halitta-musamman a cikin ƙananan ƙwayoyin cuta masu ƙauna.Tawagar da Tetyana Milojevic ta jagoranta daga Sashen Chemistry a Jami'ar Vienna ta ba da rahoto a karon farko da ba a cika samun mu'amalar microbial-tungsten ba a kewayon nanometer.Dangane da waɗannan binciken, ba wai kawai tungsten biogeochemistry ba, har ma da tsirar ƙwayoyin ƙwayoyin cuta a cikin yanayin sararin samaniya ana iya bincikar su.Sakamakon ya bayyana kwanan nan a cikin mujallar Frontiers in Microbiology.

A matsayin ƙarfe mai wuya kuma ba kasafai ba, tungsten, tare da kaddarorin sa na ban mamaki da mafi girman ma'aunin narkewa na duk karafa, zaɓi ne da ba zai yuwu ba ga tsarin ilimin halitta.Kadan ƙananan ƙwayoyin cuta, irin su thermophilic archaea ko ƙananan ƙwayoyin cuta marasa ƙwayoyin cuta, sun dace da matsananciyar yanayin yanayin tungsten kuma sun sami hanyar da za su iya daidaita tungsten.Nazari biyu na baya-bayan nan da masanin kimiyyar halittu da astrobiologist Tetyana Milojevic daga Sashen Biophysical Chemistry, Faculty of Chemistry a Jami'ar Vienna, ya ba da haske kan yuwuwar rawar da ƙwayoyin cuta ke takawa a cikin yanayi mai wadatar tungsten tare da bayyana yanayin nanoscale tungsten-microbial interface na matsananci. zafi- da acid-ƙaunar ƙwayoyin cuta Metallosphaera sedula wanda aka girma tare da mahadi na tungsten (Figures 1, 2).Hakanan wannan ƙananan ƙwayoyin cuta ne wanda za'a gwada don tsira yayin balaguron balaguro a cikin binciken gaba a cikin yanayin sararin samaniya.Tungsten na iya zama muhimmiyar mahimmanci a cikin wannan.

Daga tungsten polyoxometalates azaman tsarin inorganic tsarin rayuwa mai ɗorewa zuwa ƙwayoyin ƙwayoyin ƙwayoyin cuta na tungsten ores.

Kama da ƙwayoyin ma'adinai na sulfide na ferrous, polyoxometalates na wucin gadi (POMs) ana ɗaukar su azaman ƙwayoyin ƙwayoyin cuta a cikin sauƙaƙe matakan sinadarai na prelife da kuma nuna halayen "kamar rayuwa".Duk da haka, har yanzu ba a magance dacewa da POMs zuwa tsarin rayuwa ba (misali, numfashi na microbial)."Yin amfani da misalin Metallosphaera sedula, wanda ke tsiro a cikin zafi mai zafi kuma yana shayarwa ta hanyar iskar oxygen ta karfe, mun bincika ko hadaddun tsarin inorganic bisa tushen tungsten POM clusters zai iya ci gaba da ci gaban M. sedula kuma ya haifar da yaduwar kwayar halitta da rarraba," in ji Milojevic.

Masana kimiyya sun sami damar nuna cewa yin amfani da gungu na POM na tushen tungsten yana ba da damar haɗa nau'ikan redox iri-iri na tungsten a cikin ƙwayoyin ƙwayoyin cuta.Abubuwan ajiya na organometallic a mahaɗin tsakanin M. sedula da W-POM an narkar da su zuwa kewayon nanometer yayin haɗin gwiwa mai amfani tare da Cibiyar Electron Microscope da Nanoanalysis (FELMI-ZFE, Graz).Abubuwan da muka gano suna ƙara tungsten-encrusted M. sedula zuwa ga bayanan girma na nau'ikan ƙwayoyin cuta na biomineralized, waɗanda ba a cika samun wakilcin archaea ba, "in ji Milojevic.A biotransformation na tungsten ma'adinai scheelite yi da matsananci thermoacidophile M. sedula take kaiwa zuwa karya tsarin scheelite, m solubilization na tungsten, da tungsten mineralization na microbial cell surface (Figure 3).Abubuwan nanostructures na tungsten carbide mai kama da biogenic da aka bayyana a cikin binciken suna wakiltar yuwuwar ɗorewa na nanomaterial da aka samu ta hanyar ƙirar ƙayyadaddun yanayin muhalli.