Microbial oxidation of arsenite in a subarctic environment: diversity of arsenite oxidase genes and identification of a psychrotolerant arsenite oxidiser

Tom Osborne
,
Thomas H. Osborne
,
Heather E. Jamieson
,
Karen A. Hudson-Edwards
,
D. Kirk Nordstrom
,
Stephen R. Walker

Research Output:

Contribution to journal

Article

Peer-review

Open access

Abstract

Arsenic is toxic to most living cells. The two soluble inorganic forms of arsenic are arsenite (+3) and arsenate (+5), with arsenite the more toxic. Prokaryotic metabolism of arsenic has been reported in both thermal and moderate environments and has been shown to be involved in the redox cycling of arsenic. No arsenic metabolism (either dissimilatory arsenate reduction or arsenite oxidation) has ever been reported in cold environments (i.e. < 10°C).