Bacteriochlorophyll and community structure of aerobic anoxygenic phototrophic bacteria in a particle-rich estuary
- PMID: 20182527
- DOI: 10.1038/ismej.2010.13
Bacteriochlorophyll and community structure of aerobic anoxygenic phototrophic bacteria in a particle-rich estuary
Abstract
Photoheterotrophic microbes use organic substrates and light energy to satisfy their demand for carbon and energy and seem to be well adapted to eutrophic estuarine and oligotrophic oceanic environments. One type of photoheterotroph, aerobic anoxygenic phototrophic (AAP) bacteria, is especially abundant in particle-rich, turbid estuaries. To explore questions regarding the controls of these photoheterotrophic bacteria, we examined their abundance by epifluorescence microscopy, concentrations of the light-harvesting pigment, bacteriochlorophyll a (BChl a) and the diversity of pufM and 16S ribosomal RNA (rRNA) genes in the Chesapeake Bay. Concentrations of BChl a varied substantially, much more so than AAP bacterial abundance, along the estuarine salinity gradient. The BChl a concentration was correlated with turbidity only when oceanic and estuarine waters were considered together. Concentrations of BChl a and BChl a quotas were higher in particle-associated than in free-living AAP bacterial communities and appear to reflect physiological adaptation, not different AAP bacterial communities; pufM genes did not differ between particle-associated and free-living communities. In contrast, particle-associated and free-living bacterial communities were significantly different, on the basis of the analysis of 16S rRNA genes. The BChl a quota of AAP bacteria was not correlated with turbidity, suggesting that pigment synthesis varies in direct response to particles, not light attenuation. The AAP bacteria seem to synthesize more BChl a when dissolved and particulate substrates are available than when only dissolved materials are accessible, which has implications for understanding the impact of substrates on the level of photoheterotrophy compared with heterotrophy in AAP bacteria.
Similar articles
-
Distinct distribution pattern of abundance and diversity of aerobic anoxygenic phototrophic bacteria in the global ocean.Environ Microbiol. 2007 Dec;9(12):3091-9. doi: 10.1111/j.1462-2920.2007.01419.x. Environ Microbiol. 2007. PMID: 17991036
-
Aerobic anoxygenic phototrophic bacteria attached to particles in turbid waters of the Delaware and Chesapeake estuaries.Appl Environ Microbiol. 2007 Jun;73(12):3936-44. doi: 10.1128/AEM.00592-07. Epub 2007 Apr 27. Appl Environ Microbiol. 2007. PMID: 17468276 Free PMC article.
-
Abundance and diversity of aerobic anoxygenic phototrophic bacteria in saline lakes on the Tibetan plateau.FEMS Microbiol Ecol. 2009 Feb;67(2):268-78. doi: 10.1111/j.1574-6941.2008.00616.x. Epub 2008 Nov 4. FEMS Microbiol Ecol. 2009. PMID: 19016867
-
Bioenergetics of photoheterotrophic bacteria in the oceans.Environ Microbiol Rep. 2013 Apr;5(2):188-99. doi: 10.1111/j.1758-2229.2012.00367.x. Epub 2012 Jul 24. Environ Microbiol Rep. 2013. PMID: 23584962 Review.
-
Seeing green bacteria in a new light: genomics-enabled studies of the photosynthetic apparatus in green sulfur bacteria and filamentous anoxygenic phototrophic bacteria.Arch Microbiol. 2004 Oct;182(4):265-76. doi: 10.1007/s00203-004-0718-9. Epub 2004 Sep 1. Arch Microbiol. 2004. PMID: 15340781 Review.
Cited by
-
Microbial Gene Abundance and Expression Patterns across a River to Ocean Salinity Gradient.PLoS One. 2015 Nov 4;10(11):e0140578. doi: 10.1371/journal.pone.0140578. eCollection 2015. PLoS One. 2015. PMID: 26536246 Free PMC article.
-
Biogeographic patterns of aerobic anoxygenic phototrophic bacteria reveal an ecological consistency of phylogenetic clades in different oceanic biomes.Sci Rep. 2018 Mar 7;8(1):4105. doi: 10.1038/s41598-018-22413-7. Sci Rep. 2018. PMID: 29515205 Free PMC article.
-
Temporal changes and altitudinal distribution of aerobic anoxygenic phototrophs in mountain lakes.Appl Environ Microbiol. 2013 Oct;79(20):6439-46. doi: 10.1128/AEM.01526-13. Epub 2013 Aug 16. Appl Environ Microbiol. 2013. PMID: 23956384 Free PMC article.
-
Transcriptional response of the photoheterotrophic marine bacterium Dinoroseobacter shibae to changing light regimes.ISME J. 2011 Dec;5(12):1957-68. doi: 10.1038/ismej.2011.68. Epub 2011 Jun 9. ISME J. 2011. PMID: 21654848 Free PMC article.
-
Picoplankton Bloom in Global South? A High Fraction of Aerobic Anoxygenic Phototrophic Bacteria in Metagenomes from a Coastal Bay (Arraial do Cabo--Brazil).OMICS. 2016 Feb;20(2):76-87. doi: 10.1089/omi.2015.0142. OMICS. 2016. PMID: 26871866 Free PMC article.
Publication types
MeSH terms
Substances
Associated data
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
- Actions
LinkOut - more resources
Full Text Sources
Miscellaneous