Psychrophiles loj hlob zoo tshaj plaws ntawm qhov kub thiab txias < 15 ° C. Hauv qhov xwm txheej, lawv feem ntau pom nyob hauv dej hiav txwv tob lossis hauv thaj tsam qaum teb. Mesophiles, uas loj hlob ntawm 15 txog 45 ° C, yog hom kab mob feem ntau thiab suav nrog ntau hom kab mob.
Cov kev puas siab puas ntsws nyob hauv dab tsi?
Habitat. Cov cheeb tsam txias uas psychrophiles nyob yog nyob rau hauv lub ntiaj teb, raws li ib feem loj ntawm peb lub ntiaj teb ntog qhov kub thiab txias qis dua 15 ° C. Lawv muaj nyob rau hauv permafrost, polar ice, glaciers, snowfields thiab dej hiav txwv tob.
psychrophiles ciaj sia li cas?
Kom muaj sia nyob ntawm qhov kub nyob ze rau qhov chaw khov dej, psychrophiles tau hloov kho qee qhov tseem ceeb ntawm cov cellular adaptation, nrog rau cov txheej txheem los tswj cov membrane fluidity [3, 4], synthesis ntawm txias-acclimation proteins [5], freeze tolerance strategies [6], thiab txias-active enzymes.
Dab tsi yog qhov kub thiab txias ua rau psychrophiles nyob hauv?
Psychrophiles yog cov kab mob extremophilic lossis archaea uas txias-hlub uas muaj qhov kub zoo rau kev loj hlob ntawm txog 15 ° C lossis qis dua, qhov kub siab tshaj plaws rau kev loj hlob ntawm txog 20 ° C. thiab qhov kub tsawg kawg nkaus rau kev loj hlob ntawm 0 ° C lossis qis dua.
Dab tsi yog qhov hloov pauv molecular ntawm psychrophiles?
Txhawm rau kom lawv muaj sia nyob thiab loj hlob hauv qhov chaw txias, cov kab mob psychrophilic tau hloov kho ntau yam kev hloov pauv mus rau tag nrho lawv cov khoom ntawm tes, suav nrog lawv daim nyias nyias, lub zog tsim hluav taws xob, cov khoom siv hluavtaws, biodegradative enzymes thiab cov khoom ua lub luag haujlwm rau cov khoom noj khoom haus
