Photosynthate partitioning and fermentation in hot spring microbial mat communities.

Applied and Environmental Microbiology
S C Nold, D M Ward

Abstract

Patterns of (sup14)CO(inf2) incorporation into molecular components of the thermophilic cyanobacterial mat communities inhabiting hot springs located in Yellowstone National Park and Synechococcus sp. strain C1 were investigated. Exponentially growing Synechococcus sp. strain C1 partitioned the majority of incorporated (sup14)CO(inf2) into protein, low-molecular-weight metabolites, and lipid fractions (45, 22, and 18% of total incorporated carbon, respectively). In contrast, mat cores from various hot springs predominantly accumulated polyglucose during periods of illumination (between 77 and 85% of total incorporated (sup14)CO(inf2)). Although photosynthetically active, mat photoautotrophs do not appear to be rapidly growing, since we also detected only limited synthesis of macromolecules associated with growth (i.e., protein and rRNA). To test the hypothesis that polysaccharide reserves are fermented in situ under the dark anaerobic conditions cyanobacterial mats experience at night, mat cores were prelabeled with (sup14)CO(inf2) under illuminated conditions and then transferred to dark anaerobic conditions. Radiolabel in the polysaccharide fraction decreased by 74.7% after 12 h, of which 58.5% was recovered as radiolabeled a...Continue Reading

References

Nov 15, 1973·Journal of Molecular Biology·U K Laemmli, M Favre
Jan 1, 1995·Systematic and Applied Microbiology·S C Nold, D M Ward
Oct 1, 1977·Applied and Environmental Microbiology·W N Doemel, T D Brock
Jul 1, 1980·Applied and Environmental Microbiology·D M Ward, G J Olson
Mar 1, 1981·Applied and Environmental Microbiology·K A Sandbeck, D M Ward
Sep 1, 1987·Applied and Environmental Microbiology·L L Richardson, R W Castenholz
Oct 1, 1987·Applied and Environmental Microbiology·K L AndersonD M Ward
Jul 1, 1988·Applied and Environmental Microbiology·M M Bateson, D M Ward
Aug 1, 1993·Applied and Environmental Microbiology·J G Kramer, F L Singleton

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Citations

Jul 19, 2011·Applied and Environmental Microbiology·Jan Zarzycki, Georg Fuchs
May 25, 2012·Extremophiles : Life Under Extreme Conditions·Eulyn PagalingShaun Heaphy
Dec 5, 2012·Extremophiles : Life Under Extreme Conditions·Roy MackenzieBeatriz Díez
Jan 19, 2020·Applied and Environmental Microbiology·Laurey SteinkeDavid M Ward
Feb 10, 2006·Proceedings of the National Academy of Sciences of the United States of America·Anne-Soisig SteunouArthur R Grossman
Nov 30, 2012·The ISME Journal·Luke C BurowSteven W Singer
Feb 10, 2012·PLoS Computational Biology·Ali R Zomorrodi, Costas D Maranas
Nov 8, 2012·Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life·Armen Y MulkidjanianEugene V Koonin
Feb 15, 2012·Proceedings of the National Academy of Sciences of the United States of America·Armen Y MulkidjanianEugene V Koonin
May 26, 2015·Frontiers in Microbiology·Sandra M HeinzelmannMarcel T J van der Meer
Dec 26, 2008·Extremophiles : Life Under Extreme Conditions·M C PortilloJ M Gonzalez
Jun 17, 2020·Genome Biology and Evolution·Aurélien SaghaïPurificación López-García
Apr 7, 2009·Extremophiles : Life Under Extreme Conditions·Maggie C Y Lau, Stephen B Pointing
Feb 15, 2018·Applied and Environmental Microbiology·Katerina PappEgbert Schwartz
Apr 3, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Anna KlalesSuzanne Amador Kane
Mar 6, 1999·Current Opinion in Microbiology·D M Ward
May 2, 2000·Applied and Environmental Microbiology·D B OertherL Raskin

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