Non-human microbiomes, June 16

Microbiomes of tse-tse flies, fish, lettuce, spruce. And also some salty sisters!

Insect microbiome

Identification of overexpressed genes in Sodalis glossinidius inhabiting trypanosome-infected self-cured tsetse flies – Illiassou Hamidou Soumana – Frontiers in Microbiology

“The aim of the work was to investigate whether fly refractoriness could be associated with specific Sodalis gene expression. The transcriptome of S. glossinidius harbored by flies that were fed either with a non-infected blood meal (control) or with a trypanosome-infected meal but that did not develop infection were analyzed, using microarray technology, and compared. “

Fish microbiome

Teleost microbiomes: the state of the art in their characterization, manipulation and importance in aquaculture and fisheries – Martin S. Llewellyn – Frontiers in Microbiology

“We discuss teleost microbiomes in health and disease, microbiome ontogeny, prospects for successful microbiome manipulation (especially in an aquaculture setting) and attempt to identify important future research themes. “

Plant microbiomes

Effect of the strain Bacillus amyloliquefaciens FZB42 on the microbial community in the rhizosphere of lettuce under field conditions analyzed by whole metagenome sequencing – Magdalena Kröber – Frontiers in Microbiology

“Rhizosphere microbial communities of lettuce treated with B. amyloliquefaciens FZB42 and non-treated plants were profiled by high-throughput metagenome sequencing of whole community DNA. “

Loss of diversity in wood-inhabiting fungal communities affects decomposition activity in Norway spruce wood – Lara Valentín – Frontiers in Microbiology

“ The number of observed OTUs in DGGE was used as a measure of fungal diversity. Respiration rate increased between early- and late-decay stages. “

Specificity of plant-microbe interactions in the tree mycorrhizosphere biome and consequences for soil C cycling – Carolyn Churchland – Frontiers in Microbiology

“In this review we examine evidence for tree species- mycorrhizal specificity, and the mechanisms involved (e.g., signal compounds)”

Sludge and bioreactors

Pyrosequencing Analysis Yields Comprehensive Assessment of Microbial Communities in Pilot-Scale Two-Stage Membrane Biofilm Reactors – Aura Ontiveros-Valencia – Environmental Science & Technology

“UniFrac, principal coordinate analysis (PCoA), and diversity analyses documented that the microbial community of biofilms sampled when the MBfRs had a high acceptor loading were phylogenetically distant from and less diverse than the microbial community of biofilm samples with lower acceptor loadings. “

Sludge As a Potential Important Source of Antibiotic Resistance Genes in Both the Bacterial and Bacteriophage Fractions – William Calero-Cáceres – Environmental Science & Technology

“This study evaluates the prevalence of ARGs in the bacterial and phage fractions of anaerobic digested sludge; five ARGs (blaTEM, blaCTX-M, qnrA, qnrS, and sul1) are quantified by qPCR.”

Water and salt microbiology

Salty sisters: the women of halophiles – Bonnie K. Baxter – Frontiers in Microbiology

“This essay emphasizes the “her story” (not “history”) of halophile discovery.”

The feasibility of automated online flow cytometry for in-situ monitoring of microbial dynamics in aquatic ecosystems – Michael D. Besmer – Frontiers in Microbiology

“As proof-of-concept we demonstrate examples of microbial dynamics in (i) flowing tap water from a municipal drinking water supply network and (ii) river water from a small creek subject to two rainfall events.”

Cytometric fingerprints: evaluation of new tools for analyzing microbial community dynamics – Christin Koch – Frontiers in Microbiology

“The source of inoculum (four different types of wastewater samples) showed the strongest influence on the microbial community structure and biofilm performance while the choice of substrate (acetate or lactate) had no significant effect in the present study.”

Subseafloor bacteria survive by over-activating DNA-repair and antibiotic target genes – Phys.org

“A group of researchers at Woods Hole Oceanographic Institute and University of Delaware* developed techniques to analyse the messenger RNA (mRNA) molecules produced by subseafloor microbes.”

Unexplored hypersaline habitats are sources of novel actinomycetes – Polpass Arul Jose – Frontiers in Microbiology

“….diverse actinomycetes from poorly studied unusual environments promises a raise in the prospect of discovering novel compounds with potential activities that can be developed as a resource for drug discovery “

From Twitter, thanks to @DeepMicrobe: Eight plenary speakers, all of them male.
Ninth International Symposium on Subsurface Microbiology – ISSM 2014

Vibrio ecology, pathogenesis, and evolution – Daniela Ceccarelli and Rita R. Colwell – Frontiers in Microbiology

“This Research Topic brings together 24 articles that highlight the most recent research findings concerning the biology of the genus Vibrio and covers pathogenicity and host interaction, genome plasticity and evolution, and the dynamics of factors influencing the ecology of vibrios.”

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