Wurin tafasa na 5900 digiri Celsius da taurin lu'u-lu'u-kamar a hade tare da carbon:tungstenshi ne ƙarfe mafi nauyi, duk da haka yana da ayyukan nazarin halittu-musamman a cikin ƙwayoyin cuta masu son zafi. Tawagar da Tetyana Milojevic ta jagoranta daga Sashen Chemistry a Jami'ar Vienna rahoton a karon farko da ba kasafai ake samu ba.tungstenmu'amala a kewayon nanometer. Dangane da waɗannan binciken, ba kawaitungstenbiogeochemistry, amma kuma ana iya bincikar rayuwar ƙwayoyin cuta a cikin yanayin sararin samaniya. Sakamakon ya bayyana kwanan nan a cikin mujallarFrontiers a Microbiology.

A matsayin ƙarfe mai wuya kuma ba kasafai ba,tungsten, tare da kaddarorin sa na ban mamaki da mafi girman wurin narkewa na duk karafa, zaɓi ne da ba zai yuwu ba don tsarin ilimin halitta. Kadan ƙananan ƙwayoyin cuta, irin su thermophilic archaea ko ƙananan ƙwayoyin cuta marasa ƙwayoyin ƙwayoyin cuta, sun dace da matsananciyar yanayin yanayin tungsten kuma sun sami hanyar da za su daidaita.tungsten. Bincike guda biyu na baya-bayan nan da masanin kimiyyar halittu da astrobiologist Tetyana Milojevic daga Sashen Kimiyyar Kimiyyar Halitta, Faculty of Chemistry a Jami'ar Vienna, ya ba da haske kan yuwuwar rawar da kwayoyin halitta ke takawa a cikintungsten- wadataccen yanayi da kuma kwatanta nanoscaletungsten-Microbial dubawa na matsananci zafi- da acid-son microorganism Metallosphaera sedula girma tare da.tungstenmahadi (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.Tungstenzai iya zama muhimmin abu a cikin wannan.

Dagatungstenpolyoxometalates a matsayin tsarin inorganic tsarin rayuwa mai dorewa zuwa microbial bioprocessing natungsten karfe

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

Masana kimiyya sun iya nuna cewa amfani datungstengungu na POM na tushen inorganic yana ba da damar haɗa nau'ikan iri-iritungstenredox jinsunan a cikin ƙananan 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. The biotransformation natungsten ma'adinaischeelite yi ta matsananci thermoacidophile M. sedula take kaiwa zuwa karya tsarin scheelite, m solubilization natungsten, kumatungstenmineralization na microbial cell surface (Figure 3). Biogenictungsten carbide-kamar nanostructures da aka kwatanta a cikin binciken suna wakiltar yuwuwar nanomaterial mai ɗorewa da aka samu ta hanyar ƙira ta taimaka wa ƙananan ƙwayoyin cuta.

“Sakamakon mu ya nuna cewa M. sedula ya samutungsten-hali mineralized cell surface via encrusting dakamar tungsten carbidemahadi,” in ji masanin ilimin halitta Milojevic. Wannantungsten-encrusted Layer kafa a kusa da sel na M. sedula iya sosai wakiltar microbial dabarun jure matsananci yanayi yanayi, kamar a lokacin da interplanetary tafiya.Tungstenencapsulation na iya zama ƙwaƙƙwaran sulke na kariya daga yanayin muhalli. Milojevic ya ƙarasa da cewa "Makamin tungsten ƙananan ƙwayoyin cuta yana ba mu damar ƙara nazarin rayuwar wannan ƙananan ƙwayoyin cuta a cikin sararin samaniya," in ji Milojevic.