journal
MENU ▼
Read by QxMD icon Read
search

Trends in Microbiology

journal
https://www.readbyqxmd.com/read/28108182/marine-bacterioplankton-seasonal-succession-dynamics
#1
REVIEW
Carina Bunse, Jarone Pinhassi
Bacterioplankton (bacteria and archaea) are indispensable regulators of global element cycles owing to their unique ability to decompose and remineralize dissolved organic matter. These microorganisms in surface waters worldwide exhibit pronounced seasonal succession patterns, governed by physicochemical factors (e.g., light, climate, and nutrient loading) that are determined by latitude and distance to shore. Moreover, we emphasize that the effects of large-scale factors are modulated regionally, and over shorter timespans (days to weeks), by biological interactions including molecule exchanges, viral lysis, and grazing...
January 17, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28094093/achiralpentagonalpolyhedralframework-forcharacterizingviruscapsidstructures
#2
REVIEW
Aditya Raguram, V Sasisekharan, Ram Sasisekharan
Recent developments of rational strategies for the design of antiviral therapies, including monoclonal antibodies (mAbs), have naturally relied extensively on available viral structural information. As new strategies continue to be developed, it is equally important to continue to refine our understanding and interpretation of viral structural data. There are known limitations to the traditional (Caspar-Klug) theory for describing virus capsid structures that involves subdividing a capsid into triangular subunits...
January 13, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28094092/step-by-step-cell-by-cell-quantification-of-the-bacterial-cell-cycle
#3
REVIEW
Matteo Osella, Sander J Tans, Marco Cosentino Lagomarsino
The Escherichia coli cell cycle is a classic, but we are still missing some of its essential aspects. The reason is that our knowledge is mostly based on population data, and our grasp of the behavior of single cells is still very limited. Today, new dynamic single-cell data promise to overcome this barrier. Existing data from single cells have already led to findings and hypotheses that challenge standard views, and have raised new questions. Here, we review these recent developments and propose that a systematic exploration of the correlation patterns between 'cell-cycle intervals' defined by key molecular events measured in many single cells could lead to a quantitative characterization of the cell cycle in terms of inherent stochasticity and homeostatic controls...
January 13, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28094091/can-maldi-tof-mass-spectrometry-reasonably-type-bacteria
#4
REVIEW
Marlène Sauget, Benoît Valot, Xavier Bertrand, Didier Hocquet
Bacterial typing is crucial to tackle the spread of bacterial pathogens but current methods are time-consuming and costly. Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) has been recently integrated into the microbiology laboratory workflow for a quick and low-cost microbial species identification. Independent research groups have successfully redirected the original function of this technology from their primary purpose to discriminate subgroups within pathogen species...
January 13, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28089288/the-role-of-reactive-oxygen-species-in-antibiotic-mediated-killing-of-bacteria
#5
REVIEW
Heleen Van Acker, Tom Coenye
Recently, it was proposed that there is a common mechanism behind the activity of bactericidal antibiotics, involving the production of reactive oxygen species (ROS). However, the involvement of ROS in antibiotic-mediated killing has become the subject of much debate. In the present review, we provide an overview of the data supporting the ROS hypothesis; we also present data that explain the contradictory results often obtained when studying antibiotic-induced ROS production. For this latter aspect we will focus on the importance of taking the experimental setup into consideration and on the importance of some technical aspects of the assays typically used...
January 12, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28089325/ecology-of-the-oral-microbiome-beyond-bacteria
#6
REVIEW
Jonathon L Baker, Batbileg Bor, Melissa Agnello, Wenyuan Shi, Xuesong He
Although great strides have been made in understanding the complex bacterial community inhabiting the human oral cavity, for a variety of (mainly technical) reasons the ecological contributions of oral fungi, viruses, phages, and the candidate phyla radiation (CPR) group of ultrasmall bacteria have remained understudied. Several recent reports have illustrated the diversity and importance of these organisms in the oral cavity, while TM7x and Candida albicans have served as crucial paradigms for CPR species and oral fungi, respectively...
January 11, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28089324/the-peculiar-functions-of-the-bacterial-extracellular-matrix
#7
REVIEW
Anna Dragoš, Ákos T Kovács
A biofilm is a common life form where bacterial cells crowd together surrounded by an extracellular matrix (ECM). Traditionally, the ECM is considered as a structural material that glues and shields the biofilm cells. Here we describe alternative functions of the ECM, highlighting how it benefits microbes beyond the biofilms. Next to protecting free-living cells, the ECM participates in signaling, migration, and genetic exchange either being freely shared with other species or being exclusive to siblings. Considering the structural and recently discovered functions of the ECM, we also attempt to revise its role in sociomicrobiology...
January 11, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28081956/predatory-bacteria-moving-from-curiosity-towards-curative
#8
J Tyson, R E Sockett
In a world where infection-causing, pathogenic bacteria are evolving resistance to conventional antibiotics, new solutions are needed. One proposal is the use of predatory bacteria as living antibiotics. Two new papers show that predators are not harmful and can kill pathogens inside live animals, a very positive step forward.
January 9, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28057411/helicobacter-pylori-a-paradigm-pathogen-for-subverting-host-cell-signal-transmission
#9
REVIEW
Michael Naumann, Olga Sokolova, Nicole Tegtmeyer, Steffen Backert
Helicobacter pylori colonizes the gastric mucosa in the human stomach and represents a major risk factor for peptic ulcer disease and gastric cancer. Here, we summarize our current knowledge of the complex impact of H. pylori on manipulating host signalling networks, that is, by the cag pathogenicity island (cagPAI)-encoded type IV secretion system (T4SS). We show that H. pylori infections reflect a paradigm for interspecies contact-dependent molecular communication, which includes the disruption of cell-cell junctions and cytoskeletal rearrangements, as well as proinflammatory, cell cycle-related, proliferative, antiapoptotic, and DNA damage responses...
January 2, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28038926/the-ecological-role-of-volatile-and-soluble-secondary-metabolites-produced-by-soil-bacteria
#10
REVIEW
Olaf Tyc, Chunxu Song, Jeroen S Dickschat, Michiel Vos, Paolina Garbeva
The rich diversity of secondary metabolites produced by soil bacteria has been appreciated for over a century, and advances in chemical analysis and genome sequencing continue to greatly advance our understanding of this biochemical complexity. However, we are just at the beginning of understanding the physicochemical properties of bacterial metabolites, the factors that govern their production and ecological roles. Interspecific interactions and competitor sensing are among the main biotic factors affecting the production of bacterial secondary metabolites...
December 27, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/28027803/rules-of-engagement-the-type-vi-secretion-system-in-vibrio-cholerae
#11
REVIEW
Avatar Joshi, Benjamin Kostiuk, Andrew Rogers, Jennifer Teschler, Stefan Pukatzki, Fitnat H Yildiz
Microbial species often exist in complex communities where they must avoid predation and compete for favorable niches. The type VI secretion system (T6SS) is a contact-dependent bacterial weapon that allows for direct killing of competitors through the translocation of proteinaceous toxins. Vibrio cholerae is a Gram-negative pathogen that can use its T6SS during antagonistic interactions with neighboring prokaryotic and eukaryotic competitors. The T6SS not only promotes V. cholerae's survival during its aquatic and host life cycles, but also influences its evolution by facilitating horizontal gene transfer...
December 24, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/28024669/the-antibiotic-apocalypse-scaremongering-or-scientific-reporting
#12
Jonathan A G Cox, Tony Worthington
Antimicrobial resistance is dominating scientific media. We are warned of an impending 'antibiotic apocalypse', where mankind faces its biggest threat, untreatable microbes. However, the world is not ending. Scientists are responding to the threat; new knowledge and chemotherapeutics are being created to safeguard our future. The future is bright, not gloomy.
December 23, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/28017513/from-catheter-to-kidney-stone-the-uropathogenic-lifestyle-of-proteus-mirabilis
#13
REVIEW
Allison N Norsworthy, Melanie M Pearson
Proteus mirabilis is a model organism for urease-producing uropathogens. These diverse bacteria cause infection stones in the urinary tract and form crystalline biofilms on indwelling urinary catheters, frequently leading to polymicrobial infection. Recent work has elucidated how P. mirabilis causes all of these disease states. Particularly exciting is the discovery that this bacterium forms large clusters in the bladder lumen that are sites for stone formation. These clusters, and other steps of infection, require two virulence factors in particular: urease and MR/P fimbriae...
December 22, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/28012687/assessing-the-risk-of-antibiotic-resistance-transmission-from-the-environment-to-humans-non-direct-proportionality-between-abundance-and-risk
#14
REVIEW
Célia M Manaia
The past decade has witnessed a burst of study regarding antibiotic resistance in the environment, mainly in areas under anthropogenic influence. Therefore, impacts of the contaminant resistome, that is, those related to human activities, are now recognized. However, a key issue refers to the risk of transmission of resistance to humans, for which a quantitative model is urgently needed. This opinion paper makes an overview of some risk-determinant variables and raises questions regarding research needs. A major conclusion is that the risks of transmission of antibiotic resistance from the environment to humans must be managed under the precautionary principle, because it may be too late to act if we wait until we have concrete risk values...
December 21, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27986381/metal-oxide-reduction-linked-to-anaerobic-methane-oxidation
#15
Oluwatobi E Oni, Michael W Friedrich
Microbial methanotrophy is important in mitigating methane emissions to the atmosphere. Geochemical evidence suggests the occurrence of anaerobic methane oxidation with metal oxides in natural environments. A study has now identified, for the first time, novel freshwater archaea of the order Methanosarcinales that can oxidize methane with Fe(III) and Mn(IV) minerals as electron acceptors.
December 13, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27979499/the-dsf-family-of-quorum-sensing-signals-diversity-biosynthesis-and-turnover
#16
REVIEW
Lian Zhou, Lian-Hui Zhang, Miguel Cámara, Ya-Wen He
The diffusible signaling factor (DSF)-based quorum sensing (QS) system has emerged as a widely conserved cell-cell communication mechanism in Gram-negative bacteria. Typically, signals from the DSF family are cis-2-unsaturated fatty acids which regulate diverse biological functions. Recently, substantial progress has been made on the characterization of new members of this family of signals. There have also been new developments in the understanding of the biosynthesis of these molecules where dual enzymatic activities of the DSF synthase and the use of various substrates have been described...
December 12, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27956142/herpesviruses-and-their-host-cells-a-successful-liaison
#17
REVIEW
Barbara Adler, Christine Sattler, Heiko Adler
During a long history of coevolution, herpesviruses have reached a fine-tuned balance with their hosts, allowing them to successfully persist and spread to new hosts without causing too much damage. Only under certain circumstances, as in neonates or immunocompromised individuals, they may cause serious diseases. The delicate balance between herpesviruses and their hosts results from interactions of a great variety of viral and cellular factors which together shape the tropism for a particular host, tissue, or cell...
December 9, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27923541/protecting-from-envelope-stress-variations-on-the-phage-shock-protein-theme-trends-in-microbiology-25-first-page-en-dash-last-page-2017
#18
Riccardo Manganelli, Maria Laura Gennaro
No abstract text is available yet for this article.
December 3, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27919551/defining-the-core-microbiome-in-corals-microbial-soup
#19
REVIEW
Alejandra Hernandez-Agreda, Ruth D Gates, Tracy D Ainsworth
Corals are considered one of the most complex microbial biospheres studied to date, hosting thousands of bacterial phylotypes in species-specific associations. There are, however, substantial knowledge gaps and challenges in understanding the functional significance of bacterial communities and bacterial symbioses of corals. The ubiquitous nature of some bacterial interactions has only recently been investigated and an accurate differentiation between the healthy (symbiotic) and unhealthy (dysbiotic) microbial state has not yet been determined...
December 2, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27916383/disentangling-interactions-in-the-microbiome-a-network-perspective
#20
REVIEW
Mehdi Layeghifard, David M Hwang, David S Guttman
Microbiota are now widely recognized as being central players in the health of all organisms and ecosystems, and subsequently have been the subject of intense study. However, analyzing and converting microbiome data into meaningful biological insights remain very challenging. In this review, we highlight recent advances in network theory and their applicability to microbiome research. We discuss emerging graph theoretical concepts and approaches used in other research disciplines and demonstrate how they are well suited for enhancing our understanding of the higher-order interactions that occur within microbiomes...
December 1, 2016: Trends in Microbiology
journal
journal
31406
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"