Phase variation in the glycosyltransferase genes of Pasteurella multocida associated with outbreaks of fowl cholera on free-range layer farms.
Sign Up to like & getrecommendations! Published in 2022 at "Microbial genomics"
DOI: 10.1099/mgen.0.000772
Abstract: Fowl cholera caused by Pasteurella multocida has re-emerged in Australian poultry production since the increasing adoption of free-range production systems. Currently, autogenous killed whole-cell vaccines prepared from the isolates previously obtained from each farm are… read more here.
Keywords: outer core; phase variation; free range; layer ... See more keywords
100+ years of phase variation: the premier bacterial bet-hedging phenomenon
Sign Up to like & getrecommendations! Published in 2025 at "Microbiology"
DOI: 10.1099/mic.0.001537
Abstract: Abstract Stochastic, reversible switches in the expression of Salmonella flagella variants were first described by Andrewes in 1922. Termed phase variation (PV), subsequent research found that this phenomenon was widespread among bacterial species and controlled… read more here.
Keywords: variation; 100 years; phase variation; years phase ... See more keywords
The Effect of Bias and Frequency on Amplitude to Phase Conversion of Photodiodes
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2020.3013836
Abstract: Fluctuation of the optical power incident on a photodiode will cause phase variation of the electrical signal. This phenomenon is known as amplitude-to-phase (AM-to-PM) conversion. The effects of bias voltage and test frequency on AM-to-PM… read more here.
Keywords: amplitude phase; conversion; frequency; phase variation ... See more keywords
A 40-GHz 4-Bit Digitally Controlled VGA With Low Phase Variation Using 65-nm CMOS Process
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Microwave and Wireless Components Letters"
DOI: 10.1109/lmwc.2019.2942013
Abstract: A 40-GHz variable gain amplifier (VGA) with 4-bit digital gain control and low phase variation is designed and fabricated on the 65-nm CMOS process. The digital gain control mechanism is achieved using the presented digital… read more here.
Keywords: low phase; cmos process; phase variation; gain ... See more keywords
An X-Band Ultra-Low Phase Variation Variable Gain Amplifier With Capacitive Compensation Technique
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2023.3296628
Abstract: To achieve a large gain range while minimizing the phase variation, two-stage cascaded variable gain amplifiers (VGAs) are demonstrated to achieve 31.5 dB-gain-control and 0.5 dB-linear-step at X-band in this brief. Two complementary numerical-control differential… read more here.
Keywords: variable gain; gain; phase variation; band ultra ... See more keywords
Quorum sensing and DNA methylation play active roles in clinical Burkholderia phase variation
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Bacteriology"
DOI: 10.1128/jb.00531-24
Abstract: ABSTRACT Phenotypic diversity in bacteria often results from adaptation to changing environmental conditions, exemplified by variable colony morphotypes. In Burkholderia pseudomallei, discrete genomic alterations and modulation of gene expression facilitate adaptation. Adapted variants of species… read more here.
Keywords: dna methylation; variation; quorum sensing; phase variation ... See more keywords
Colony phase variation switch modulates antimicrobial tolerance and biofilm formation in Acinetobacter baumannii
Sign Up to like & getrecommendations! Published in 2024 at "Microbiology Spectrum"
DOI: 10.1128/spectrum.02956-23
Abstract: ABSTRACT Carbapenem-resistant Acinetobacter baumannii causes one of the most difficult-to-treat nosocomial infections. Polycationic drugs like polymyxin B or colistin and tetracycline drugs such as doxycycline or minocycline are commonly used to treat infections caused by… read more here.
Keywords: acinetobacter baumannii; baumannii; phase variation; colony ... See more keywords
Phase variation of Clostridioides difficile colony morphology occurs via modulation of cell division.
Sign Up to like & getrecommendations! Published in 2025 at "PLoS pathogens"
DOI: 10.1371/journal.ppat.1013471
Abstract: Phase variation of C. difficile colony morphology occurs via modulation of transcription of cmrRST, which encodes a three-protein signal transduction system. Response regulators CmrR and CmrT promote rough colony development, cell elongation and chaining, surface… read more here.
Keywords: cell; cell division; colony morphology; phase variation ... See more keywords
Why vary what’s working? Phase variation and biofilm formation in Francisella tularensis
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Microbiology"
DOI: 10.3389/fmicb.2022.1076694
Abstract: The notoriety of high-consequence human pathogens has increased in recent years and, rightfully, research efforts have focused on understanding host-pathogen interactions. Francisella tularensis has been detected in an impressively broad range of vertebrate hosts as… read more here.
Keywords: tularensis; phase variation; biofilm formation;
Salmonella Regulator STM0347 Mediates Flagellar Phase Variation via Hin Invertase
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Molecular Sciences"
DOI: 10.3390/ijms23158481
Abstract: Salmonella enterica is one of the most important food-borne pathogens, whose motility and virulence are highly related to flagella. Flagella alternatively express two kinds of surface antigen flagellin, FliC and FljB, in a phenomenon known… read more here.
Keywords: flagellar phase; phase variation; variation; salmonella ... See more keywords
Amplitude-Phase Variation in a Graphene-Based Microstrip Line
Sign Up to like & getrecommendations! Published in 2022 at "Micromachines"
DOI: 10.3390/mi13071039
Abstract: A graphene-based transmission line with independent amplitude and phase variation capability is proposed. Variation of graphene’s tunable conductivity by an applied DC bias is exploited in designing an attenuator and a phase shifter. The attenuator… read more here.
Keywords: graphene; variation graphene; phase variation; variation ... See more keywords