Deciphering biodiversity and interactions between bacteria and microeukaryotes within epilithic biofilms from the Loue River, France
Anouk Zancarini,Isidora Echenique-Subiabre,Didier Debroas,Didier Debroas,Najwa Taib,Catherine Quiblier,Catherine Quiblier,Jean-François Humbert +7 more
TLDR
Assessment of spatio-temporal variation in the diversity and composition of bacterial and microeukaryotic communities within biofilms in a French river found significant changes in the composition of these microbial communities over the sampling period and between the upstream and downstream stations.Abstract:
Epilithic river biofilms are complex matrix-enclosed communities harboring a great diversity of prokaryotic and eukaryotic microorganisms. Interactions between these communities and the relative impacts of environmental factors on their compositions are poorly understood. In this study, we assessed the spatio-temporal variation in the diversity and composition of bacterial and microeukaryotic communities within biofilms in a French river. Significant changes were found in the composition of these microbial communities over the sampling period and between the upstream and downstream stations. In addition, the beta diversity of the bacterial community tended to decrease along the river, mostly as a result of turnover. These changes could be caused by the different water temperatures and geological and hydrological river contexts at the sampling sites (from karst landscape to river plain). Finally, our network analysis showed multiple correlations among dominant OTUs. Among them, negative correlations between Rhodobacteraceae and two other dominant groups of photosynthetic microorganisms (cyanobacteria and diatoms) were particularly interesting, which raises the question of what environmental factors trigger the changes occurring in benthic microbial photosynthetic communities.read more
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Microplastics: New substrates for heterotrophic activity contribute to altering organic matter cycles in aquatic ecosystems.
Maria Arias-Andres,Marie Therese Kettner,Takeshi Miki,Hans-Peter Grossart,Hans-Peter Grossart +4 more
TL;DR: It is proposed that MP surfaces act as new niches for aquatic microorganisms and that the constantly increasing MP pollution has the potential to globally impact carbon dynamics of pelagic environments by altering heterotrophic activities.
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Microplastic-associated biofilms in lentic Italian ecosystems.
Francesca Di Pippo,Cristina Venezia,Maria Sighicelli,Loris Pietrelli,Stefania Di Vito,Simone Nuglio,Simona Rossetti +6 more
TL;DR: Analysis of biodiversity and structure of microplastic-associated biofilms collected from Italian lentic ecosystems revealed a patchy microbial colonization and a complex biofilm architecture with bacterial micro-colonies and cyanobacterial aggregates occurring together with microalgae assemblages.
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Toxic benthic freshwater cyanobacterial proliferations: Challenges and solutions for enhancing knowledge and improving monitoring and mitigation
Susanna A. Wood,Laura T. Kelly,Keith Bouma-Gregson,Jean-François Humbert,Haywood Dail Laughinghouse,James M. Lazorchak,Tara G. McAllister,Andrew McQueen,Kaytee Pokrzywinski,Jonathan Puddick,Catherine Quiblier,Catherine Quiblier,Laura A. Reitz,Ken G. Ryan,Yvonne Vadeboncoeur,Arthur Zastepa,Timothy W. Davis +16 more
TL;DR: This review summarises knowledge on the ecology, toxin production, and impacts of toxic freshwater benthic cyanobacterial proliferations, and documents monitoring, management, and sampling strategies, and explores mitigation options.
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Heterogeneity of interactions of microbial communities in regions of Taihu Lake with different nutrient loadings: A network analysis.
TL;DR: It is demonstrated that all of the bacterioplankton, microeukaryotes and inter-kingdom communities networks in Taihu Lake were non-random and higher clustering coefficient and average degree but lower average path length indexes were observed, indicating the nodes in XKB were more clustered and closely connected with plenty edges than those of MLB.
Journal ArticleDOI
Application of MALDI-TOF MS for identification of environmental bacteria: A review
TL;DR: An overview of the application of matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) in various environmental studies through bibliometric analysis and literature review is provided in this article .
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