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Related Concept Videos

Gene Regulation in Microbial Communities: Quorum Sensing01:28

Gene Regulation in Microbial Communities: Quorum Sensing

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Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
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Microbial Morphologies01:29

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Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
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Classification is the process of organizing organisms into hierarchically inclusive groups based on their phenotypic similarities or evolutionary relationships. A species comprises one or more strains, and closely related species are grouped into genera. Genera are further classified into families, families into orders, orders into classes, and so forth, up to the domain level, which is the broadest taxonomic rank derived from a combination of phenotypic and genotypic data.The nomenclature of...
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The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
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Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model01:09

Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model

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Various dissolution theories provide insight into the factors that influence the dissolution rate. Danckwerts' Model suggests that turbulence, rather than a stagnant layer, characterizes the dissolution medium at the solid-liquid interface. In this model, the agitated solvent contains macroscopic packets that move to the interface via eddy currents, facilitating the absorption and delivery of the drug to the bulk solution. The regular replenishment of solvent packets maintains the...
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Environmental Applications of Microorganisms

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Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
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Toward an integrative framework for microbial community coalescence.

Gordon F Custer1, Luana Bresciani1, Francisco Dini-Andreote1

  • 1Department of Plant Science and Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA; The One Health Microbiome Center, Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, USA.

Trends in Microbiology
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Community coalescence, the mixing of ecological communities, is common in nature and engineered systems. This study proposes a framework to understand microbial community coalescence, drawing parallels with biological invasion.

Keywords:
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Area of Science:

  • Ecology
  • Microbial Ecology
  • Community Ecology

Background:

  • Community coalescence, the mixing of intact ecological communities, is a frequent phenomenon in both natural and engineered systems, including microbial ecosystems.
  • Examples range from river confluences to the application of fecal microbiota transplantation.
  • Despite its prevalence, microbial community coalescence remains an underexplored ecological process.

Purpose of the Study:

  • To propose an integrative framework for understanding microbial community coalescence.
  • To align community coalescence with the established framework of biological invasion.
  • To identify key factors influencing coalescence outcomes and community functioning.

Main Methods:

  • Comparative analysis of community coalescence and biological invasion.
  • Discussion of organismal interactions and establishment dynamics.
  • Proposal for the application of ecological null modeling.

Main Results:

  • Community coalescence shares analogies with biological invasion, offering a unified perspective.
  • Organismal interactions and successful establishment are critical determinants of coalescence outcomes.
  • Ecological null modeling can elucidate the role of various processes in community reassembly post-coalescence.

Conclusions:

  • An integrative framework is proposed to advance the study of microbial community coalescence.
  • Understanding coalescence is crucial for managing and predicting the behavior of microbial communities.
  • Future research should leverage null modeling to dissect the ecological drivers of community reassembly.