Importance of Local and Regional Scales in Shaping Mycobacterial Abundance in Freshwater Lakes

Autor: Lila Bouhdamane, Françoise Lucas, Bruno J. Lemaire, Mohamed Saad, Gilles Varrault, Laurent Moulin, Brigitte Vinçon-Leite, Claire Thérial, Adèle Bressy, Adélaïde Roguet, Viet Tran, Arnaud Catherine
Přispěvatelé: laboratoire Eau Environnement et Systèmes Urbains (LEESU), AgroParisTech-École des Ponts ParisTech (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), University of Wisconsin - Milwaukee, Molécules de Communication et Adaptation des Micro-organismes (MCAM), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Eau de Paris, ANR-10-CEPL-0010,PULSE,Lacs périurbains, société et environnement(2010)
Rok vydání: 2017
Předmět:
DNA
Bacterial
0301 basic medicine
Geologic Sediments
Paris
Spatial and temporal distribution
030106 microbiology
Soil Science
Context (language use)
Biology
Real-Time Polymerase Chain Reaction
Lake
Real-time quantitative PCR
Mycobacterium
03 medical and health sciences
Water column
Rivers
Microbial ecology
Abundance (ecology)
medicine
14. Life underwater
Ecosystem
Nontuberculous mycobacteria
Ecology
Evolution
Behavior and Systematics
Ecology
Aquatic ecosystem
Biodiversity
15. Life on land
Seasonality
medicine.disease
[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology
Bacterial Load
6. Clean water
Lakes
030104 developmental biology
Bacterial Proton-Translocating ATPases
13. Climate action
[SDE]Environmental Sciences
Biological dispersal
Spatial variability
Seasons
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Water Microbiology
Environmental Monitoring
Zdroj: Microbial Ecology
Microbial Ecology, Springer Verlag, 2018, 75 (4), pp.834-846. ⟨10.1007/s00248-017-1088-6⟩
Microbial ecology
Microbial ecology, Springer Verlag, 2018, 75 (4), pp.834-846. ⟨10.1007/s00248-017-1088-6⟩
ISSN: 1432-184X
0095-3628
DOI: 10.1007/s00248-017-1088-6
Popis: International audience; Biogeographical studies considering the entire bacterial community may underestimate mechanisms of bacterial assemblages at lower taxonomic levels. In this context, the study aimed to identify factors affecting the spatial and temporal dynamic of the Mycobacterium, a genus widespread in aquatic ecosystems. Nontuberculous mycobacteria (NTM) density variations were quantified in the water column of freshwater lakes at the regional scale (annual monitoring of 49 lakes in the Paris area) and at the local scale (2-year monthly monitoring in Créteil Lake) by real-time quantitative PCR targeting the atpE gene. At the regional scale, mycobacteria densities in water samples ranged from 6.7 × 103 to 1.9 × 108 genome units per liter. Density variations were primarily explained by water pH, labile iron, and dispersal processes through the connection of the lakes to a river. In Créteil Lake, no spatial variation of mycobacterial densities was noticed over the 2-year monthly survey, except after large rainfall events. Indeed, storm sewer effluents locally and temporarily increased NTM densities in the water column. The temporal dynamic of the NTM densities in Créteil Lake was associated with suspended solid concentrations. No clear seasonal variation was noticed despite a shift in NTM densities observed over the 2012–2013 winter. Temporal NTM densities fluctuations were well predicted by the neutral community model, suggesting a random balance between loss and gain of mycobacterial taxa within Créteil Lake. This study highlights the importance of considering multiple spatial scales for understanding the spatio-temporal dynamic of bacterial populations in natural environments.
Databáze: OpenAIRE
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