A lasting symbiosis: how the Hawaiian bobtail squid finds and keeps its bioluminescent bacterial partner

Nature Reviews Microbiology, Journal Year: 2021, Volume and Issue: 19(10), P. 666 - 679

Published: June 4, 2021

Language: Английский

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A lasting symbiosis: how Vibrio fischeri finds a squid partner and persists within its natural host

Nature Reviews Microbiology, Journal Year: 2021, Volume and Issue: 19(10), P. 654 - 665

Published: June 4, 2021

Language: Английский

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Compartmentalization drives the evolution of symbiotic cooperation

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 375(1808), P. 20190602 - 20190602

Published: Aug. 9, 2020

Across the tree of life, hosts have evolved mechanisms to control and mediate interactions with symbiotic partners. We suggest that evolution physical structures allow spatially separate symbionts, termed compartmentalization, is a common mechanism used by hosts. Such compartmentalization allows to: (i) isolate symbionts their reproduction; (ii) reward cooperative punish or stop non-cooperative symbionts; (iii) reduce direct conflict among different strains in single host. Compartmentalization has allowed increase benefits they obtain from partners across diversity interactions, including legumes rhizobia, plants fungi, squid Vibrio , insects nutrient provisioning bacteria, insects, human microbiome. In cases where not evolved, we ask why not. argue when interact competitive hierarchy, engage partnerships which are less costly, likely evolve. conclude key understanding cooperation. This article part theme issue ‘The role microbiome host evolution’.

Language: Английский

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Versatile and Dynamic Symbioses Between Insects and Burkholderia Bacteria

Annual Review of Entomology, Journal Year: 2019, Volume and Issue: 65(1), P. 145 - 170

Published: Oct. 9, 2019

Symbiotic associations with microorganisms represent major sources of ecological and evolutionary innovations in insects. Multiple insect taxa engage symbioses bacteria the genus Burkholderia, a diverse group that is widespread across different environments whose members can be mutualistic or pathogenic to plants, fungi, animals. Burkholderia symbionts provide nutritional benefits resistance against insecticides stinkbugs, defend Lagria beetle eggs may involved nitrogen metabolism ants. In contrast many other symbioses, known are characterized by environmental symbiont acquisition mixed-mode transmission, resulting interesting dynamics strain composition. Insect-Burkholderia present valuable model systems from which derive insights into general principles governing symbiotic interactions because they often experimentally genetically tractable span large fraction diversity functions, localizations, transmission routes represented symbioses.

Language: Английский

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Achieving a multi-strain symbiosis: strain behavior and infection dynamics

The ISME Journal, Journal Year: 2018, Volume and Issue: 13(3), P. 698 - 706

Published: Oct. 23, 2018

Language: Английский

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Integrating the Ecosystem Services Framework to Define Dysbiosis of the Breastfed Infant Gut: The Role of B. infantis and Human Milk Oligosaccharides

Frontiers in Nutrition, Journal Year: 2020, Volume and Issue: 7

Published: April 14, 2020

Mounting evidence supports a connection between the composition of infant gut microbiome and long-term health. In fact, aberrant compositions during key developmental windows in early life are associated with increased disease risk; therefore, making pertinent modifications to infancy offers significant promise improve human There is growing support for integrating concept ecosystem services (the provision benefits from ecosystems humans) linking specific functions well-being. This framework widely applied conservation efforts macro-ecosystems systematic approach guide restoration actions aimed recover critical ecological functions. The aim this work apply integrate recent studies demonstrating stable alteration breastfed infants when Bifidobacterium longum subsp. infantis EVC001, symbiont capable efficiently utilizing milk oligosaccharides into organic acids that beneficial lower intestinal pH, reintroduced. Additionally, using examples literature we illustrate how absence B. results diminished services, which may be health consequences related immune metabolic disorders. Finally, propose model by dysbiosis can defined as reduction supplied host rather than merely changes diversity or taxonomic composition. Given interest targeted modification therapies decrease acute chronic risk, presented here provides assess effectiveness such strategies host-centered perspective.

Language: Английский

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Domains and Major Transitions of Social Evolution

Oxford University Press eBooks, Journal Year: 2022, Volume and Issue: unknown

Published: Nov. 3, 2022

Abstract Evolutionary change is usually incremental and continuous, but some increases in organizational complexity have been radical divisive. biologists, who refer to such events as “major transitions,” not always appreciated that these advances were novel forms of pairwise commitment subjugated previously independent agents. Inclusive fitness theory convincingly explains cooperation conflict societies animals free-living cells, deserve its eminent status it should also capture how major transitions originated: from prokaryote cells eukaryote via differentiated multicellularity, colonies with specialized queen worker castes. As yet, no attempt has made apply inclusive principles the origins events. Domains Major Transitions Social Evolution develops idea evolutionary involved new levels informational closure moved beyond looser partnerships. Early neo-Darwinians understood this principle, later social gradient thinking obscured discontinuity life’s fundamental transitions. The author argues required maximal kinship simple ancestors—not reduction already elaborate societies. Reviewing more than a century literature, he makes testable predictions, proposing open closed organisms require very different explanations. It appears only human ancestors lived complex before our cultural transition occurred. We therefore impose trajectory own history on rest nature. This thought-provoking text suitable for graduate-level students taking courses biology, behavioral ecology, organismal developmental genetics, well professional researchers fields. will appeal broader, interdisciplinary audience, including sciences humanities. Jacobus J. Boomsma Professor Ecology at University Copenhagen.

Language: Английский

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Lighting the way: how the Vibrio fischeri model microbe reveals the complexity of Earth’s “simplest” life forms

Journal of Bacteriology, Journal Year: 2024, Volume and Issue: 206(5)

Published: May 2, 2024

ABSTRACT Vibrio ( Aliivibrio ) fischeri ’s initial rise to fame derived from its alluring production of blue-green light. Subsequent studies probe the mechanisms underlying this bioluminescence helped field discover phenomenon now known as quorum sensing. Orthologs quorum-sensing regulators (i.e., LuxR and LuxI) originally identified in V. were subsequently uncovered a plethora bacterial species, analogous pathways found yet others. Over past three decades, study microbe has greatly expanded unique role exclusive symbiont light organ Hawaiian bobtail squid, Euprymna scolopes . Buoyed by optically amenable host persistent insightful researchers who have applied novel cross-disciplinary approaches, developed into robust model for microbe-host associations. It contributed our understanding how bacteria experience respond specific, often fluxing environmental conditions which impact development their host. also deepened numerous microbial processes such motility chemotaxis, biofilm formation dispersal, competition, relevance specific genes context colonizing an animal Parallels these between studied pathogens are readily apparent, demonstrating functional conservation across diverse associations permitting reinterpretation “pathogenesis.” Collectively, advances built foundation microbiome positioned continue expand frontiers world inside animals.

Language: Английский

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Vibrio fischeri : a model for host-associated biofilm formation

Journal of Bacteriology, Journal Year: 2024, Volume and Issue: 206(2)

Published: Jan. 25, 2024

ABSTRACT Multicellular communities of adherent bacteria known as biofilms are often detrimental in the context a human host, making it important to study their formation and dispersal, especially animal models. One such model is symbiosis between squid Euprymna scolopes bacterium Vibrio fischeri . Juvenile hatch aposymbiotically selectively acquire symbiont from natural seawater containing diverse environmental microbes. Successful pairing facilitated by ciliary movements that direct quiet zones on surface squid’s symbiotic light organ where V. forms small aggregate or biofilm. Subsequently, disperse enter organ, ultimately reaching colonizing deep crypt spaces. Although transient, critical for optimal colonization tightly controlled. In vitro studies have identified variety polysaccharides proteins comprise extracellular matrix. Some most well-characterized matrix factors include polysaccharide (SYP), cellulose polysaccharide, LapV adhesin. this review, we discuss these components, regulation, other less understood biofilm contributors. We also highlight what currently about dispersal aggregates host cues may promote it. Finally, briefly describe discoveries gleaned isolates. By unraveling complexities involved ’s control over begin understand how environment triggers transient unique relationship.

Language: Английский

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Symbiont location, host fitness, and possible coadaptation in a symbiosis between social amoebae and bacteria

eLife, Journal Year: 2018, Volume and Issue: 7

Published: Dec. 31, 2018

Recent symbioses, particularly facultative ones, are well suited for unravelling the evolutionary give and take between partners. Here we look at variation in natural isolates of social amoeba Dictyostelium discoideum their relationships with bacterial symbionts, Burkholderia hayleyella agricolaris. Only about a third field-collected amoebae carry symbiont. We cured cross-infected hosts different symbiont association histories then compared host responses to each type. Before curing, clones did not vary significantly overall fitness, but infected produced morphologically multicellular structures. After curing reinfecting, fitness declined. However, B. suffered fewer costs when reinfected hayleyella, indicating that they have evolved mechanisms tolerate Our work suggests specific acquired symbionts; exploring host-symbiont within species may provide further insights into disease dynamics.

Language: Английский

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