Summer distribution and diversity of aerobic anoxygenic phototrophic bacteria in the Mediterranean Sea in relation to environmental variables

Aerobic anoxygenic phototrophic bacteria (AAP) represent an important fraction of bacterioplankton assemblages in various oceanic regimes. Although their abundance and distribution have been explored recently in diverse oceanic regions, the environmental factors controlling the population structure...

Full description

Saved in:
Bibliographic Details
Published in:FEMS microbiology ecology 2010-11, Vol.74 (2), p.397-409
Main Authors: Lehours, Anne-Catherine, Cottrell, Matthew T, Dahan, Océane, Kirchman, David L, Jeanthon, Christian
Format: Article
Language:English
Subjects:
aerobic anoxygenic phototrophic bacteria
Animal, plant and microbial ecology
Bacteria
Bacteria, Aerobic - genetics
Bacteriology
Bacterioplankton
Biodiversity and Ecology
Biological and medical sciences
Carbon - analysis
Cloning
community structure
DNA, Bacterial - genetics
Ecology
Ecosystem
Ecotypes
Electrophoresis
Environmental factors
Environmental Sciences
Fundamental and applied biological sciences. Psychology
Gammaproteobacteria - genetics
Genetic diversity
Hydrogen-Ion Concentration
Light
Marine systems
Mediterranean Sea
Microbial ecology
Microbiology
Miscellaneous
molecular ecology
Nitrogen
Nitrogen - analysis
Nitrogen compounds
Oligotrophic environments
Organic carbon
Organic nitrogen
Organic phosphorus
Particulate organic nitrogen
Particulate organic phosphorus
Phosphorus
Phosphorus - analysis
photoheterotrophs
Photosynthetically active radiation
Phototrophic bacteria
Phototrophic Processes
Phylogeny
Physicochemical properties
Population changes
Population genetics
Population structure
Populations
pufM gene
Seasons
Seawater - analysis
Seawater - microbiology
Statistical methods
Total organic carbon
Water Microbiology
Zonation
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aerobic anoxygenic phototrophic bacteria (AAP) represent an important fraction of bacterioplankton assemblages in various oceanic regimes. Although their abundance and distribution have been explored recently in diverse oceanic regions, the environmental factors controlling the population structure and diversity of these photoheterotrophic bacteria remain poorly understood. Here, we investigate the horizontal and vertical distributions and the genetic diversity of AAP populations collected in late summer throughout the Mediterranean Sea using pufM-temporal temperature gel gradient electrophoresis (TTGE) and clone library analyses. The TTGE profiles and clone libraries analyzed using multivariate statistical methods demonstrated a horizontal and vertical zonation of AAP assemblages. Physicochemical parameters such as pH, inorganic nitrogen compounds, photosynthetically active radiation, total organic carbon and to a lesser extent particulate organic nitrogen and phosphorus, and biogenic activities (e.g. bacterial production, cell densities), acted in synergy to explain the population changes with depth. About half of the pufM sequences were
ISSN:0168-6496
1574-6941
DOI:10.1111/j.1574-6941.2010.00954.x