Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 69, Issue 5, Pages 2893-2898Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.69.5.2893-2898.2003
Keywords
-
Categories
Ask authors/readers for more resources
We examined the population of unicellular cyanobacteria (Synechococcus) in the upper 3-mm vertical interval of a 68degreesC region of a microbial mat in a hot spring effluent channel (Yellowstone National Park, Wyoming). Fluorescence microscopy and microsensor measurements of O-2 and oxygenic photosynthesis demonstrated the existence of physiologically distinct Synechococcus populations at different depths along a light gradient quantified by scalar irradiance microprobes. Molecular methods were used to evaluate whether physiologically distinct populations could be correlated with genetically distinct populations over the vertical interval. We were unable to identify patterns in genetic variation in Synechococcus 16S rRNA sequences that correlate with different vertically distributed populations. However, patterns of variation at the internal transcribed spacer locus separating 16S and 23S rRNA genes suggested the existence of closely related but genetically distinct populations corresponding to different functional populations occurring at different depths.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available