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A quick, easy and non‐intrusive method for underwater volume and surface area evaluation of benthic organisms by 3D computer modelling
TLDR
It is found that in situ volume and SA measurements created by 3D modelling enable easy, fast and non-intrusive studies of benthic aquatic organisms, without removing the subject organisms from their habitat, thus enabling continuous study of natural growth over extended time periods.
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Clades of huge phages from across Earth’s ecosystems
TLDR
Genomic analyses of major clades of huge phages sampled from across Earth’s ecosystems show that they have diverse genetic inventories, including a variety of CRISPR–Cas systems and translation-relevant genes.
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Implementing sponge physiological and genomic information to enhance the diversity of its culturable associated bacteria.
TLDR
Designing culturing conditions to fit the metabolic needs of major bacterial taxa present in the sponge, through a combined use of diverse culture media compositions with aerobic and microaerophilic states, and addition of antibiotics, yielded higher diversity of the cultured bacteria and led to the isolation of novel sponge-associated and sponge-specific bacteria.
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Sponge-associated bacteria mineralize arsenic and barium on intracellular vesicles
TLDR
It is shown that a single sponge symbiotic bacterium, Entotheonella sp.
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Genome-resolved metagenomics reveals site-specific diversity of episymbiotic CPR bacteria and DPANN archaea in groundwater ecosystems
TLDR
Cryogenic transmission electron microscopy imaging and genomic analyses enabled us to identify CPR and DPANN lineages that reproducibly attach to host cells and showed that the growth of CPR bacteria seems to be stimulated by attachment to host-cell surfaces, indicating that CPR andDPANN communities may be differentiated according to physicochemical conditions and host populations.
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Patterns of gene content and co-occurrence constrain the evolutionary path toward animal association in CPR bacteria
TLDR
The genome inventory for Absconditabacteria, Gracilibacteria, and Saccharibacteria, CPR bacteria known to occur in both animal-associated and environmental microbiomes is expanded, and analyses suggest habitat transitions were likely not accompanied by large transfer or loss events, but rather were associated with continuous proteome remodeling.
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Single-bacterial genomics validates rich and varied specialized metabolism of uncultivated Entotheonella sponge symbionts
Significance Uncultivated bacteria are hypothesized to represent a large resource of new bioactive natural products and biosynthetic enzymes. Previous work identified uncultivated “Entotheonella”…
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Increased replication of dissimilatory nitrate-reducing bacteria leads to decreased anammox bioreactor performance
TLDR
Metagenomics was used to study the microbial community of a laboratory-scale anammox bioreactor from inoculation, through a performance destabilization event, to robust steady-state performance and revealed that nutrient acquisition from the environment is selected for in theAnammox community.
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A novel Chromatiales bacterium is a potential sulfide oxidizer in multiple orders of marine sponges
TLDR
The genome of a Chromatiales (class Gammaproteobacteria) bacterium is reconstructed from a metagenomic sequence dataset of a T. swinhoei-associated microbial community and has the metabolic capability to oxidize sulfide yet displays reduced metabolic potential suggestive of its lifestyle as an obligatory symbiont.
View on Wolters Kluwer
Culturable associated-bacteria of the sponge Theonella swinhoei show tolerance to high arsenic concentrations
TLDR
Results may provide an explanation for the ability of the sponge to accumulate considerable amounts of arsenic, and arsenic-mineralizing bacteria can potentially be used for the study of bioremediation, as arsenic toxicity affects millions of people worldwide.
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