Diversity of sulfate-reducing bacteria in oxic and anoxic regions of a microbial mat characterized by comparative analysis of dissimilatory sulfite reductase genes.
Sequence analysis of genes encoding dissimilatory sulfite reductase (DSR) was used to identify sulfate-reducing bacteria in a hypersaline microbial mat and to evaluate their distribution in relation to levels of oxygen. The most highly diverse DSR sequences, most related to those of the Desulfonema-like organisms within the delta-proteobacteria, were recovered from oxic regions of the mat. This observation extends those of previous studies by us and others associating Desulfonema-like organisms with oxic habitats.
Minz
D
D
Department of Civil Engineering, Northwestern University, Evanston, Illinois 60208-3109, USA.
Flax
J L
JL
Green
S J
SJ
Muyzer
G
G
Cohen
Y
Y
Wagner
M
M
Rittmann
B E
BE
Stahl
D A
DA
D000693:Anaerobiosis; D001483:Base Sequence; D003001:Cloning, Molecular; D004269:DNA, Bacterial / Q000032:analysis; D020564:Deltaproteobacteria / Q000201:enzymology*; D008969:Molecular Sequence Data; D010084:Oxidation-Reduction; D050862:Oxidoreductases Acting on Sulfur Group Donors / Q000235:genetics*; D010802:Phylogeny; D016133:Polymerase Chain Reaction; D013431:Sulfates / Q000378:metabolism*; D014871:Water Microbiology
D004269:DNA, Bacterial; D013431:Sulfates; D050862:Oxidoreductases Acting on Sulfur Group Donors