Possible Quorum Sensing in Marine Snow Bacteria: Production of Acylated Homoserine Lactones by
            <i>Roseobacter</i>
            Strains Isolated from Marine Snow

Gram, Lone; Grossart, Hans‐Peter; Schlingloff, Andrea; Kiørboe, Thomas

doi:10.1128/aem.68.8.4111-4116.2002

Cited by 245 publications

(239 citation statements)

References 44 publications

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“…Once the Roseobacter clade bacterial populations reach a certain density, they may actively expel or take advantage of the other surface-attaching bacteria via quorum-sensing-regulated antibiotic production and other mechanisms (8,10,11,24,35,44,45,48,57). Quorum sensing may also be important for multispecies biofilm formation (22,35,58). Microbial competition and cooperation may happen at the same time on a surface via cell-cell communication and interaction.…”

Section: Discussionmentioning

confidence: 99%

“…To adapt to surface life, bacteria may also exploit intercellular communication and interaction (36,37), facilitating diverse collective behaviors within the colonizing community, such as cooperation and/or competition (10,44,61). Many Roseobacter clade bacteria produce acylated homoserine lactones (22,35,58), the quorum-sensing signals involved in various microbial processes, such as biofilm formation and development. Thus, these bacteria may have the ability to shape the subsequent biofilm community structure and development via cell-cell communication and interaction.…”

Section: Discussionmentioning

confidence: 99%

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Cross-Ocean Distribution of Rhodobacterales Bacteria as Primary Surface Colonizers in Temperate Coastal Marine Waters

Dang

Chen

et al. 2008

Appl Environ Microbiol

347

279

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Bacterial surface colonization is a universal adaptation strategy in aquatic environments. However, neither the identities of early colonizers nor the temporal changes in surface assemblages are well understood. To determine the identities of the most common bacterial primary colonizers and to assess the succession process, if any, of the bacterial assemblages during early stages of surface colonization in coastal water of the West Pacific Ocean, nonnutritive inert materials (glass, Plexiglas, and polyvinyl chloride) were employed as test surfaces and incubated in seawater off the Qingdao coast in the spring of 2005 for 24 and 72 h. Phylogenetic analysis of the 16S rRNA gene sequences amplified from the recovered surface-colonizing microbiota indicated that diverse bacteria colonized the submerged surfaces. Multivariate statistical cluster analyses indicated that the succession of early surface-colonizing bacterial assemblages followed sequential steps on all types of test surfaces. The Rhodobacterales, especially the marine Roseobacter clade members, formed the most common and dominant primary surface-colonizing bacterial group. Our current data, along with previous studies of the Atlantic coast, indicate that the Rhodobacterales bacteria are the dominant and ubiquitous primary surface colonizers in temperate coastal waters of the world and that microbial surface colonization follows a succession sequence. A conceptual model is proposed based on these findings, which may have important implications for understanding the structure, dynamics, and function of marine biofilms and for developing strategies to harness or control surface-associated microbial communities.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Cross-Ocean Distribution of Rhodobacterales Bacteria as Primary Surface Colonizers in Temperate Coastal Marine Waters

Dang

Chen

et al. 2008

Appl Environ Microbiol

347

279

View full text Add to dashboard Cite

show abstract

“…In the planktonic lifestyle, these organisms probably grow in bursts, which are locally quickly erased by predation so that overall they should have higher turnover rates than other bacterioplankton (Mourino-Perez et al 2003;Worden et al 2006). There are strong indications that both Vibrio and Roseobacter sense and respond to their surroundings by several mechanisms, including: quorum-sensing systems (Gram et al 2002;Moran et al 2004); production of antibacterial compounds (Bruhn et al 2005); chemotaxis (Miller et al 2004;McCarter 2006); association with animal or algal cells (Buchan et al 2005); and rapid surface colonization (Dang & Lovell 2000;Thompson & Polz 2006).…”

Section: Genomic Consequences Of Adaptation To Environmental Variationsmentioning

confidence: 99%

Patterns and mechanisms of genetic and phenotypic differentiation in marine microbes

Polz

Hunt

Preheim

et al. 2006

Phil. Trans. R. Soc. B

175

156

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Microbes in the ocean dominate biogeochemical processes and are far more diverse than anticipated. Thus, in order to understand the ocean system, we need to delineate microbial populations with predictable ecological functions. Recent observations suggest that ocean communities comprise diverse groups of bacteria organized into genotypic (and phenotypic) clusters of closely related organisms. Although such patterns are similar to metazoan communities, the underlying mechanisms for microbial communities may differ substantially. Indeed, the potential among ocean microbes for vast population sizes, extensive migration and both homologous and illegitimate genetic recombinations, which are uncoupled from reproduction, challenges classical population models primarily developed for sexually reproducing animals. We examine possible mechanisms leading to the formation of genotypic clusters and consider alternative population genetic models for differentiation at individual loci as well as gene content at the level of whole genomes. We further suggest that ocean bacteria follow at least two different adaptive strategies, which constrain rates and bounds of evolutionary processes: the 'opportuni-troph', exploiting spatially and temporally variable resources; and the passive oligotroph, efficiently using low nutrient concentrations. These ecological lifestyle differences may represent a fundamental divide with major consequences for growth and predation rates, genome evolution and population diversity, as emergent properties driving the division of labour within microbial communities.

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“…are most commonly characterized as members of hydrocarbon-degrading consortia. AHL-producing strains of Marinobacter have been recovered from 'marine snow' (Gram et al, 2002).…”

Section: A Alagely Et Almentioning

confidence: 99%

Signaling-mediated cross-talk modulates swarming and biofilm formation in a coral pathogen Serratia marcescens

et al. 2011

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Interactions within microbial communities associated with marine holobionts contribute importantly to the health of these symbiotic organisms formed by invertebrates, dinoflagellates and bacteria. However, mechanisms that control invertebrate-associated microbiota are not yet fully understood. Hydrophobic compounds that were isolated from surfaces of asymptomatic corals inhibited biofilm formation by the white pox pathogen Serratia marcescens PDL100, indicating that signals capable of affecting the associated microbiota are produced in situ. However, neither the origin nor structures of these signals are currently known. A functional survey of bacteria recovered from coral mucus and from cultures of the dinoflagellate Symbiodinium spp. revealed that they could alter swarming and biofilm formation in S. marcescens. As swarming and biofilm formation are inversely regulated, the ability of some native a-proteobacteria to affect both behaviors suggests that the a-proteobacterial signal(s) target a global regulatory switch controlling the behaviors in the pathogen. Isolates of Marinobacter sp. inhibited both biofilm formation and swarming in S. marcescens PDL100, without affecting growth of the coral pathogen, indicative of the production of multiple inhibitors, likely targeting lower level regulatory genes or functions. A multi-species cocktail containing these strains inhibited progression of a disease caused by S. marcescens in a model polyp Aiptasia pallida. An a-proteobacterial isolate 44B9 had a similar effect. Even though B4% of native holobiont-associated bacteria produced compounds capable of triggering responses in well-characterized N-acyl homoserine lactone (AHL) biosensors, there was no strong correlation between the production of AHL-like signals and disruption of biofilms or swarming in S. marcescens.

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Possible Quorum Sensing in Marine Snow Bacteria: Production of Acylated Homoserine Lactones by Roseobacter Strains Isolated from Marine Snow

Cited by 245 publications

References 44 publications

Cross-Ocean Distribution of Rhodobacterales Bacteria as Primary Surface Colonizers in Temperate Coastal Marine Waters

Cross-Ocean Distribution of Rhodobacterales Bacteria as Primary Surface Colonizers in Temperate Coastal Marine Waters

Patterns and mechanisms of genetic and phenotypic differentiation in marine microbes

Signaling-mediated cross-talk modulates swarming and biofilm formation in a coral pathogen Serratia marcescens

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