Bacterial Vesicles in Marine Ecosystems

@article{Biller2014BacterialVI,
  title={Bacterial Vesicles in Marine Ecosystems},
  author={S. Biller and F. Schubotz and S. Roggensack and A. Thompson and R. Summons and S. Chisholm},
  journal={Science},
  year={2014},
  volume={343},
  pages={183 - 186}
}
Carbon Budding in the Ocean Bacterial vesicles are gaining increasing attention for their roles in pathogenesis, but the abundance of these structures and their ecological roles in nonpathogenic contexts have received little notice. Biller et al. (p. 183; see the Perspective by Scanlan) provide evidence that membrane vesicles ∼100 nm in diameter are released by marine cyanobacteria and are a major feature of marine ecosystems. Studies of cultures of Prochlorococcus—the most abundant… Expand
Bacterial Vesicles in the Ocean
TLDR
A further striking feature of Prochlorococcus is identified: the production of extracellular vesicles that may play a role in carbon cycling, gene transfer, and viral defense. Expand
Prochlorococcus extracellular vesicles: Molecular composition and adsorption to diverse microbes
TLDR
It is demonstrated that vesicles from Prochlorococcus and other bacteria associate with diverse microbes including the most abundant marine bacterium, Pelagibacter, which indicates that a portion of ‘dissolved’ compounds in the oceans are instead packaged within locally structured, particulate vesicle. Expand
Membrane vesicles in natural environments: a major challenge in viral ecology
TLDR
It is surprising that Biller et al. (2014) observed only negligible number of apparent tailed phages in their vesicle-rich ocean samples even though the methods they used to isolate MVs were similar to those traditionally employed for the isolation of viral particles, suggesting that MVs could outnumber true viral particles in some marine environments. Expand
Ecological significance of extracellular vesicles in modulating host-virus interactions during algal blooms.
TLDR
It is revealed that exposure of the natural assemblage to E. huxleyi-derived vesicles modulates not only host-virus dynamics, but also other components of the microbial food webs, thus emphasizing the importance of extracellular vesicle to microbial interactions in the marine environment. Expand
Bacterial membrane vesicles, an overlooked environmental colloid: Biology, environmental perspectives and applications.
TLDR
The current understanding of bacterial MVs and environmental perspectives are presented and promising potential for applications such as drug delivery systems and nanobiocatalysts are demonstrated. Expand
The ecological significance of extracellular vesicles in modulating host-virus interactions during algal blooms
TLDR
It is revealed that exposure of the natural assemblage to E. huxleyi-derived vesicles modulates not only host-virus dynamics, but also other components of the microbial food webs, thus emphasizing the importance of extracellular vesicle to microbial interactions in the marine environment. Expand
Communication via extracellular vesicles enhances viral infection of a cosmopolitan alga
TLDR
It is proposed that EVs are exploited by viruses to sustain efficient infectivity and propagation across E. huxleyi blooms as this mode of cell–cell communication may influence the fate of the blooms and, consequently, the composition and flow of nutrients in marine microbial food webs. Expand
Phototrophic Microorganisms: The Basis of the Marine Food Web
TLDR
The considerable amount of omics information recently becoming available on both isolates and natural populations of marine oxyphototrophs provide a solid basis for investigating their molecular ecology, their contribution to biogeochemical cycles, as well as their possible utilization in biotechnology, data mining, or biomimetics. Expand
Cyanophage-encoded lipid desaturases: oceanic distribution, diversity and function
TLDR
It is suggested that cyanophages are capable of fiddling with the infected host’s membranes, possibly leading to increased photoprotection and potentially enhancing viral-encoded photosynthetic proteins, resulting in a new viral metabolic network. Expand
Detection of outer membrane vesicles in Synechocystis PCC 6803.
TLDR
The production of OMVs is reported for the first time by the model photosynthetic organism Synechocystis sp. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 73 REFERENCES
Sulfolipids dramatically decrease phosphorus demand by picocyanobacteria in oligotrophic marine environments.
TLDR
Evolution of this "sulfur-for-phosphorus" strategy set the stage for the success of picocyanobacteria in oligotrophic environments and may have been a major event in Earth's early history when the relative availability of sulfate and PO4(3-) were significantly different from today's ocean. Expand
Dependence of the Cyanobacterium Prochlorococcus on Hydrogen Peroxide Scavenging Microbes for Growth at the Ocean's Surface
TLDR
This study showed that the extant microbial community plays a vital, previously unrecognized role in cross-protecting Prochlorococcus from oxidative damage in the surface mixed layer of the oligotrophic ocean, and underscores the importance of (indirect) biotic interactions in establishing niche boundaries. Expand
Membrane Vesicle Release in Bacteria, Eukaryotes, and Archaea: a Conserved yet Underappreciated Aspect of Microbial Life
TLDR
Underappreciated conservation of vesicle release, and the resulting functional impact throughout the tree of life, is explored in this review, stresses the importance of vESicle-mediated processes throughout biology. Expand
Microbial sources of intact polar diacylglycerolipids in the Western North Atlantic Ocean
TLDR
Overall, the findings indicate that phytoplankton are the primary source of SQDG and DGTS, while heterotrophic bacteria are the dominant source of PG, making these three compounds promising biomarkers for the study of microbes in the surface ocean. Expand
Prochlorococcus: advantages and limits of minimalism.
TLDR
Some of the recent advances in the ecology, biology, and evolution of Prochlorococcus are presented, which because of its ecological importance and tiny genome is rapidly imposing itself as a model organism in environmental microbiology. Expand
Response of Prochlorococcus ecotypes to co-culture with diverse marine bacteria
TLDR
Patterns in the outcome of pair-wise co-cultures between two ecologically distinct, yet closely related, strains of the marine cyanobacterium Prochlorococcus and hundreds of heterotrophic marine bacteria suggest that the patterns of inhibition and enhancement observed here are due to phylogenetically cohesive traits of these heterotrophs. Expand
Membrane vesicles traffic signals and facilitate group activities in a prokaryote
TLDR
It is shown that the opportunistic human pathogen Pseudomonas aeruginosa packages the signalling molecule 2-heptyl-3-hydroxy-4-quinolone into membrane vesicles that serve to traffic this molecule within a population, illustrating that a prokaryote possesses a signal trafficking system with features common to those used by higher organisms. Expand
Twelve previously unknown phage genera are ubiquitous in global oceans
TLDR
This diverse and novel collection of phages identifies a small but ubiquitous fraction of unknown marine viral diversity and provides numerous environmentally relevant phage–host systems for experimental hypothesis testing. Expand
Biosynthesis of phosphatidylcholine in bacteria.
TLDR
It is suggested that the respective eukaryotic host functions as the provider of choline for this pathway, PC synthase, which condenses choline directly with CDP-diacylglyceride to form PC in one step. Expand
Transfer of photosynthesis genes to and from Prochlorococcus viruses.
TLDR
The presence of genes central to oxygenic photosynthesis in the genomes of three phages from two viral families that infect the marine cyanobacterium Prochlorococcus is reported, indicating that they are of cyanobacterial origin. Expand
...
1
2
3
4
5
...