Unravelling the interactions among microbial populations found in activated sludge during biofilm formation

Liébana, Raquel; Arregui, Lucía; Santos, Andrés de la Oliva; Murciano, Antonio; Marquina, Domingo; Serrano, Susana

doi:10.1093/femsec/fiw134

Cited by 23 publications

(17 citation statements)

References 49 publications

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“…250 Hence, the benet of a newly established cooperation needs to outweigh the negative effect of conicts and increased competition in local groups of cells. Importantly, the formation of biolms and cell clusters can be caused by a number of non-social reasons, such as the protection from the abiotic (oxygen, pH, and drought) and biotic environment (predation, 251,252 competition, and immune system), colonisation of favourable substrates (energy-and carbon-sources), or joint niche construction and exploitation (synergism). 253 Once established, several important consequences result for cells that grow in spatially structured communities.…”

Section: Evolution Of Cooperative Cross-feedingmentioning

confidence: 99%

Ecology and evolution of metabolic cross-feeding interactions in bacteria

et al. 2018

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Literature covered: early 2000s to late 2017Bacteria frequently exchange metabolites with other micro- and macro-organisms. In these often obligate cross-feeding interactions, primary metabolites such as vitamins, amino acids, nucleotides, or growth factors are exchanged. The widespread distribution of this type of metabolic interactions, however, is at odds with evolutionary theory: why should an organism invest costly resources to benefit other individuals rather than using these metabolites to maximize its own fitness? Recent empirical work has shown that bacterial genotypes can significantly benefit from trading metabolites with other bacteria relative to cells not engaging in such interactions. Here, we will provide a comprehensive overview over the ecological factors and evolutionary mechanisms that have been identified to explain the evolution and maintenance of metabolic mutualisms among microorganisms. Furthermore, we will highlight general principles that underlie the adaptive evolution of interconnected microbial metabolic networks as well as the evolutionary consequences that result for cells living in such communities.

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Section: Evolution Of Cooperative Cross-feedingmentioning

confidence: 99%

Ecology and evolution of metabolic cross-feeding interactions in bacteria

et al. 2018

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“…Furthermore, their biofilm behavior may also be governed by N-acyl homoserine lactone (AHL) quorum sensing (Liebana et al, 2016).…”

Section: Sludgementioning

confidence: 99%

Aeromonas

Salvat¹,

Ashbolt²

2019

Water and Sanitation for the 21st Century: Health and Microbiological Aspects of Excreta and Wastewater Management (Global Wate

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“…Acinetobacter sp. has been reported as primary colonizers and bridging bacteria in aggregate/biofilm development (Katharios-Lanwermeyer et al, 2014, Liébana et al, 2016 and have previously been observed during initial stages of granulation (Weissbrodt et al, 2012). Acinetobacter sp.…”

Section: Succession Of Taxa During the Granulation Processmentioning

confidence: 80%

Influence of deterministic and stochastic processes on microbial community assembly during aerobic granulation

Liébana

Szabo

Persson

et al. 2018

Preprint

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Aerobic granular sludge is an energy efficient and compact biofilm process for wastewater treatment which has received much attention during the last decades and is now being implemented in full-scale. However, the factors involved in microbial community assembly during formation of granules are poorly understood and little is known about the reproducibility in treatment performance and community structure. Here we show that both deterministic and stochastic factors exert a dynamic influence during microbial community assembly into granular sludge. During granulation, the microbial communities in three replicate sequencing batch reactors followed similar successional trajectories of the most abundant taxa and showed similar dynamics in diversity. Deterministic factors dominated the assembly of the most abundant community members as the microbial community transitioned from floccular to granular form. Stochastic factors mostly affected rare members of the communities and caused the microbial community structure to diverge in one of the reactors; however, this did not have an impact on the treatment performance. This demonstrates that the reactor function and the dynamics of the most abundant community members are in fact reproducible during the formation of aerobic granules.

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Unravelling the interactions among microbial populations found in activated sludge during biofilm formation

Cited by 23 publications

References 49 publications

Ecology and evolution of metabolic cross-feeding interactions in bacteria

Ecology and evolution of metabolic cross-feeding interactions in bacteria

Aeromonas

Influence of deterministic and stochastic processes on microbial community assembly during aerobic granulation

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