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DTSTART:20260308T070000
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DTSTART:20261101T060000
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UID:6aea42b70deb6
DTSTART;TZID=America/Toronto:20261216T133000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20261216T150000
URL:https://uwaterloo.ca/waterloo-centre-microbial-research/events/wcmr-hos
 ts-young-investigator-series
SUMMARY:WCMR hosts: Young Investigator Series
CLASS:PUBLIC
DESCRIPTION:Abstract:\n\nLife as we know it depends on liquid water. Recen
 t\nevidence indicates that not only did ancient Mars once have a vast\
 nnetwork of surface waters\, but that liquid water potentially could\npers
 ist in the Martian subsurface to this day. Study\nof analogue envir
 onments\, or environments with environmental\nconditions similar to those 
 on ancient or extant Mars\,\nprovides insights into the potential life
  forms that could\nexist in on Mars and other worlds. Lost Hammer Sp
 ring\, located\non Axel Heiberg Island in the Canadian high Arctic\, i
 s one of the\ncoldest and saltiest terrestrial springs discovered to dat
 e\, the\ncoldest known terrestrial methane seep\, and a close analogue
  of\nputative Martian waters. It perennially discharges anoxic (<1 ppm
 \ndissolved oxygen)\, sub-zero (~−5 °C)\, and hypersaline (~24%\nsali
 nity) brines from the subsurface through up to 600 m of\npermafrost. Usin
 g a multi-omics approach utilizing metagenome\,\nmetatranscriptome\, an
 d single-amplified genome sequencing\, we\nrevealed an active microbia
 l community in the spring sediments\nutilizing primarily inorganic com
 pounds (hydrogen sulfide\, hydrogen\,\ncarbon dioxide) as energy and ca
 rbon sources\, driven inpart by\nsulfide-oxidizing bacteriascavenging tra
 ce oxygen. These results\ndemonstrated Mars-relevant metabolisms includin
 g sulfide oxidation\,\nsulfate reduction\, anaerobic oxidation of methane
 \, and oxidation of\ntrace gases (hydrogen\, carbon monoxide) detected u
 nder anoxic\,\nhypersaline\, and sub-zero ambient conditions\, providi
 ng evidence\nthat similar extant microbial life could potentially\nsurv
 ive in similar habitats on Mars.
DTSTAMP:20261103T202319Z
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