Approaches for Displaying Complete Transcriptomes of Environmental Bacteria

2015 ◽  
pp. 171-195 ◽  
Author(s):  
Juan Carlos Oliveros
Keyword(s):  
Environmental Bacteria

scholarly journals Extracellular DNA (eDNA): Neglected and Potential Sources of Antibiotic Resistant Genes (ARGs) in the Aquatic Environments

Pathogens ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 874
Author(s):  
Periyasamy Sivalingam ◽  
John Poté ◽  
Kandasamy Prabakar
Keyword(s):  
Antibiotic Resistance ◽  
Health Risk ◽  
Genetic Material ◽  
Antibiotic Resistance Genes ◽  
Extracellular Dna ◽  
Antibiotic Resistant ◽  
Treatment Technologies ◽  
Environmental Bacteria ◽  
Global Threat ◽  
Potential Public Health

Over the past decades, the rising antibiotic resistance bacteria (ARB) are continuing to emerge as a global threat due to potential public health risk. Rapidly evolving antibiotic resistance and its persistence in the environment, have underpinned the need for more studies to identify the possible sources and limit the spread. In this context, not commonly studied and a neglected genetic material called extracellular DNA (eDNA) is gaining increased attention as it can be one of the significant drivers for transmission of extracellular ARGS (eARGs) via horizontal gene transfer (HGT) to competent environmental bacteria and diverse sources of antibiotic-resistance genes (ARGs) in the environment. Consequently, this review highlights the studies that address the environmental occurrence of eDNA and encoding eARGs and its impact on the environmental resistome. In this review, we also brief the recent dedicated technological advancements that are accelerating extraction of eDNA and the efficiency of treatment technologies in reducing eDNA that focuses on environmental antibiotic resistance and potential ecological health risk.

scholarly journals Transcription factor levels enable metabolic diversification of single cells of environmental bacteria

2015 ◽  
Vol 10 (5) ◽  
pp. 1122-1133 ◽  
Author(s):  
Raúl Guantes ◽  
Ilaria Benedetti ◽  
Rafael Silva-Rocha ◽  
Víctor de Lorenzo
Keyword(s):  
Transcription Factor ◽  
Single Cells ◽  
Environmental Bacteria

scholarly journals Carryover effects of larval exposure to different environmental bacteria drive adult trait variation in a mosquito vector

2017 ◽  
Vol 3 (8) ◽  
pp. e1700585 ◽  
Author(s):  
Laura B. Dickson ◽  
Davy Jiolle ◽  
Guillaume Minard ◽  
Isabelle Moltini-Conclois ◽  
Stevenn Volant ◽  
...  
Keyword(s):  
Mosquito Vector ◽  
Carryover Effects ◽  
Trait Variation ◽  
Environmental Bacteria

scholarly journals Affordable Diffusion Microchamber Array Designs for Isolating Microbes in Classrooms and Laboratories

2021 ◽  
Author(s):  
Michael J. Braus ◽  
Robert Swader ◽  
George Petry ◽  
Thea Whitman
Keyword(s):  
Research Group ◽  
Target Cells ◽  
Environmental Medium ◽  
Plating Method ◽  
Environmental Bacteria ◽  
Petri Dishes

Diffusion microchamber array (DMA) devices have provided contemporary microbiologists with a successful alternative to the century-old plating method using petri dishes to isolate and cultivate environmental bacteria. The “ichip” DMA device, developed by the research group of Slava Epstein, is exemplary of this technology, using membranes to culture rare or otherwise nonmodel bacterial taxa, whereby the target cells are nourished by environmental medium across the separating membrane.

scholarly journals Flavobacterium chryseum sp. nov. and Flavobacterium psychroterrae sp. nov., novel environmental bacteria isolated from Antarctica

2018 ◽  
Vol 68 (10) ◽  
pp. 3132-3139 ◽  
Author(s):  
Stanislava Králová ◽  
Pavel Švec ◽  
Hans-Jürgen Busse ◽  
Eva Staňková ◽  
Peter Váczi ◽  
...  
Keyword(s):  
Environmental Bacteria

scholarly journals Bacterial exposure leads to variable mortality but not a measurable increase in surface antimicrobials across ant species

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10412
Author(s):  
Omar Halawani ◽  
Robert R. Dunn ◽  
Amy M. Grunden ◽  
Adrian A. Smith
Keyword(s):  
Staphylococcus Epidermidis ◽  
Solenopsis Invicta ◽  
Antimicrobial Compounds ◽  
Inhibitory Effects ◽  
E Coli ◽  
Aphaenogaster Rudis ◽  
Wide Range ◽  
Health Threats ◽  
Environmental Bacteria ◽  
Significant Mortality

Social insects have co-existed with microbial species for millions of years and have evolved a diversity of collective defenses, including the use of antimicrobials. While many studies have revealed strategies that ants use against microbial entomopathogens, and several have shown ant-produced compounds inhibit environmental bacterial growth, few studies have tested whether exposure to environmental bacteria represents a health threat to ants. We compare four ant species’ responses to exposure to Escherichia coli and Staphylococcus epidermidis bacteria in order to broaden our understanding of microbial health-threats to ants and their ability to defend against them. In a first experiment, we measure worker mortality of Solenopsis invicta, Brachymyrmex chinensis, Aphaenogaster rudis, and Dorymyrmex bureni in response to exposure to E. coli and S. epidermidis. We found that exposure to E. coli was lethal for S. invicta and D. bureni, while all other effects of exposure were not different from experimental controls. In a second experiment, we compared the antimicrobial ability of surface extracts from bacteria-exposed and non-exposed S. invicta and B. chinensis worker ants, to see if exposure to E. coli or S. epidermidis led to an increase in antimicrobial compounds. We found no difference in the inhibitory effects from either treatment group in either species. Our results demonstrate the susceptibility to bacteria is varied across ant species. This variation may correlate with an ant species’ use of surface antimicrobials, as we found significant mortality effects in species which also were producing antimicrobials. Further exploration of a wide range of both bacteria and ant species is likely to reveal unique and nuanced antimicrobial strategies and deepen our understanding of how ant societies respond to microbial health threats.

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