“Freezing” Thermophiles: From One Temperature Extreme to Another - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Microorganisms Année : 2022

“Freezing” Thermophiles: From One Temperature Extreme to Another

Tetyana Milojevic
Margaret Anne Cramm
Casey Hubert
  • Fonction : Auteur

Résumé

New detections of thermophiles in psychrobiotic (i.e., bearing cold-tolerant life forms) marine and terrestrial habitats including Arctic marine sediments, Antarctic accretion ice, permafrost, and elsewhere are continually being reported. These microorganisms present great opportunities for microbial ecologists to examine biogeographical processes for spore-formers and non-spore-formers alike, including dispersal histories connecting warm and cold biospheres. In this review, we examine different examples of thermophiles in cryobiotic locations, and highlight exploration of thermophiles at cold temperatures under laboratory conditions. The survival of thermophiles in psychrobiotic environments provokes novel considerations of physiological and molecular mechanisms underlying natural cryopreservation of microorganisms. Cultures of thermophiles maintained at low temperature may serve as a non-sporulating laboratory model for further exploration of metabolic potential of thermophiles at psychrobiotic temperatures, as well as for elucidating molecular mechanisms behind natural preservation and adaptation to psychrobiotic environments. These investigations are highly relevant for the search for life on other cold and icy planets in the Solar System, such as Mars, Europa and Enceladus.

Dates et versions

hal-04215328 , version 1 (22-09-2023)

Identifiants

Citer

Tetyana Milojevic, Margaret Anne Cramm, Casey Hubert, Frances Westall. “Freezing” Thermophiles: From One Temperature Extreme to Another. Microorganisms, 2022, 10 (12), pp.2417. ⟨10.3390/microorganisms10122417⟩. ⟨hal-04215328⟩
3 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More