Full Text Journal Articles by
Author Steven Huynh

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Complete Genomic Sequences of Three Salmonella enterica subsp. enterica Serovar Muenchen Strains from an Orchard in San Joaquin County, California.

Thao D Tran, Steven Huynh, Craig T Parker, Robert Hnasko, Lisa Gorski, Sat Darshan S Khalsa, Patrick H Brown, Jeffery A McGarvey,

We present here the complete genome sequences of three Salmonella enterica subsp. enterica serovar Muenchen strains, LG24, LG25, and LG26. All three strains were isolated from almond drupes grown in an orchard in San Joaquin County, California, in 2016. These genomic sequences are nonidentical and will contribute to our understanding ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2020, 9(13):]

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Campylobacter Abundance in Breastfed Infants and Identification of a New Species in the Global Enterics Multicenter Study.

Xiaoming Bian, Jolene M Garber, Kerry K Cooper, Steven Huynh, Jennifer Jones, Michael K Mills, Daniel Rafala, Dilruba Nasrin, Karen L Kotloff, Craig T Parker, Sharon M Tennant, William G Miller, Christine M Szymanski,

Campylobacter jejuni is a leading cause of bacterial diarrhea worldwide and is associated with high rates of mortality and growth stunting in children inhabiting low- to middle-resource countries. To better understand the impact of breastfeeding on Campylobacter infection in infants in sub-Saharan Africa and South Asia, we examined fecal microbial ... Read more >>

mSphere (mSphere)
[2020, 5(1):]

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Whole-Genome Sequencing-Based Characterization of 100 Listeria monocytogenes Isolates Collected from Food Processing Environments over a Four-Year Period.

Daniel Hurley, Laura Luque-Sastre, Craig T Parker, Steven Huynh, Athmanya K Eshwar, Scott V Nguyen, Nicholas Andrews, Alexandra Moura, Edward M Fox, Kieran Jordan, Angelika Lehner, Roger Stephan, Séamus Fanning,

Listeria monocytogenes is frequently found in foods and processing facilities, where it can persist, creating concerns for the food industry. Its ability to survive under a wide range of environmental conditions enhances the potential for cross-contamination of the final food products, leading to possible outbreaks of listeriosis. In this study, ... Read more >>

mSphere (mSphere)
[2019, 4(4):]

Cited: 1 time

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The Campylobacter jejuni helical to coccoid transition involves changes to peptidoglycan and the ability to elicit an immune response.

Emilisa Frirdich, Jacob Biboy, Mark Pryjma, Jooeun Lee, Steven Huynh, Craig T Parker, Stephen E Girardin, Waldemar Vollmer, Erin C Gaynor,

Campylobacter jejuni is a prevalent enteric pathogen that changes morphology from helical to coccoid under unfavorable conditions. Bacterial peptidoglycan maintains cell shape. As C. jejuni transformed from helical to coccoid, peptidoglycan dipeptides increased and tri- and tetrapeptides decreased. The DL-carboxypeptidase Pgp1 important for C. jejuni helical morphology and putative N-acetylmuramoyl-L-alanyl ... Read more >>

Mol. Microbiol. (Molecular microbiology)
[2019, 112(1):280-301]

Cited: 1 time

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Complete Genome Sequences of Three Shiga Toxin-Producing Escherichia coli O111:H8 Strains Exhibiting an Aggregation Phenotype.

Craig T Parker, Steven Huynh, James L Bono, William G Miller, Michael B Cooley, Maria T Brandl,

Non-O157 Shiga toxin-producing Escherichia coli (STEC) strains are a common source of foodborne illness. STEC O111 is among the most prevalent non-O157 STEC serogroups. Few completed genomes of STEC O111 strains have been reported to date. We report here the complete genomic sequences of three O111:H8 strains that display a ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2019, 8(1):]

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Complete Genome Sequence of Lactococcus lactis subsp. lactis Strain 14B4, Which Inhibits the Growth of Salmonella enterica Serotype Poona In Vitro.

Thao D Tran, Steven Huynh, Craig T Parker, Ruyang Han, Robert Hnasko, Lisa Gorski, Jeffery A McGarvey,

We present here the complete genome sequence of Lactococcus lactis strain 14B4, isolated from almond drupes in northern California. This strain was observed to inhibit the growth of Salmonella enterica serotype Poona strain RM3363 in vitro. ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2018, 7(19):]

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Complete Genome Sequence of the Arcobacter marinus Type Strain JCM 15502.

William G Miller, Emma Yee, Steven Huynh, Craig T Parker,

Arcobacter species are often recovered from marine environments and are isolated from both seawater and shellfish. Arcobacter marinus was recovered from the homogenate of a sample containing surface seawater, seaweed, and a starfish. This study describes the whole-genome sequence of the A. marinus type strain JCM 15502 (= CL-S1T = ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2018, 7(16):]

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Draft Genome Sequences of Nine Campylobacter hyointestinalis subsp. lawsonii Strains.

Xiaoming Bian, Steven Huynh, Mary H Chapman, Christine M Szymanski, Craig T Parker, William G Miller,

With increasing reports of Campylobacter hyointestinalis species associated with human diseases, more genome sequences are required to understand the virulence mechanisms of this emerging pathogen. Here, we describe the genome sequences of nine C. hyointestinalis subsp. lawsonii strains. ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2018, 7(10):]

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Complete Genome Sequence of Acinetobacter radioresistens Strain LH6, a Multidrug-Resistant Bacteriophage-Propagating Strain.

Clay S Crippen, Steven Huynh, William G Miller, Craig T Parker, Christine M Szymanski,

Antimicrobial resistance is a major problem worldwide. Understanding the interplay between drug-resistant pathogens, such as Acinetobacter baumannii and related species, potentially acting as environmental reservoirs is critical for preventing the spread of resistance determinants. Here we report the complete genome sequence of a multidrug-resistant bacteriophage-propagating strain of Acinetobacter radioresistens. ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2018, 7(5):]

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Genome Sequences of Eight Shiga Toxin-Producing Escherichia coli Strains Isolated from a Produce-Growing Region in California.

Craig T Parker, Kerry K Cooper, Steven Huynh, Timothy P Smith, James L Bono, Michael Cooley,

Produce contaminated with Shiga toxin-producing Escherichia coli (STEC) is a continuing source of foodborne illness in the United States. This report documents the complete genome sequences of eight STEC strains isolated from livestock and water samples taken from a major agricultural region for leafy greens in California. ... Read more >>

Microbiol Resour Announc (Microbiology resource announcements)
[2018, 7(1):]

Cited: 1 time

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Complete Genome Sequences of Three Bacillus amyloliquefaciens Strains That Inhibit the Growth of Listeria monocytogenes In Vitro.

Thao D Tran, Steven Huynh, Craig T Parker, Robert Hnasko, Lisa Gorski, Jeffery A McGarvey,

Here, we report the complete genome sequences of three Bacillus amyloliquefaciens strains isolated from alfalfa, almond drupes, and grapes that inhibited the growth of Listeria monocytogenes strain 2011L-2857 in vitro We also report multiple gene clusters encoding secondary metabolites that may be responsible for the growth inhibition of L. monocytogenes. ... Read more >>

Genome Announc (Genome announcements)
[2018, 6(25):]

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Catabolite repression in Campylobacter jejuni correlates with intracellular succinate levels.

Anne-Xander van der Stel, Chris H A van de Lest, Steven Huynh, Craig T Parker, Jos P M van Putten, Marc M S M Wösten,

Bacteria have evolved different mechanisms to catabolize carbon sources from nutrient mixtures. They first consume their preferred carbon source, before others are used. Regulatory mechanisms adapt the metabolism accordingly to maximize growth and to outcompete other organisms. The human pathogen Campylobacter jejuni is an asaccharolytic Gram-negative bacterium that catabolizes amino ... Read more >>

Environ. Microbiol. (Environmental microbiology)
[2018, 20(4):1374-1388]

Cited: 3 times

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Local genes for local bacteria: Evidence of allopatry in the genomes of transatlantic Campylobacter populations.

Ben Pascoe, Guillaume Méric, Koji Yahara, Helen Wimalarathna, Susan Murray, Matthew D Hitchings, Emma L Sproston, Catherine D Carrillo, Eduardo N Taboada, Kerry K Cooper, Steven Huynh, Alison J Cody, Keith A Jolley, Martin C J Maiden, Noel D McCarthy, Xavier Didelot, Craig T Parker, Samuel K Sheppard,

The genetic structure of bacterial populations can be related to geographical locations of isolation. In some species, there is a strong correlation between geographical distance and genetic distance, which can be caused by different evolutionary mechanisms. Patterns of ancient admixture in Helicobacter pylori can be reconstructed in concordance with past ... Read more >>

Mol. Ecol. (Molecular ecology)
[2017, 26(17):4497-4508]

Cited: 8 times

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Complete Genomic Sequences of Two Salmonella enterica subsp. enterica Serogroup C2 (O:6,8) Strains from Central California.

Lisa Gorski, Steven Huynh, Kerry K Cooper, Craig T Parker,

Salmonella enterica subsp. enterica strains RM11060, serotype 6,8:d:-, and RM11065, serotype 6,8:-:e,n,z15, were isolated from environmental samples collected in central California in 2009. We report the complete genome sequences of these two strains. These genomic sequences are distinct and will provide additional data to our understanding of S. enterica genomics. ... Read more >>

Genome Announc (Genome announcements)
[2017, 5(46):]

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Comparative Genomic Analysis Identifies a Campylobacter Clade Deficient in Selenium Metabolism.

William G Miller, Emma Yee, Bruno S Lopes, Mary H Chapman, Steven Huynh, James L Bono, Craig T Parker, Norval J C Strachan, Ken J Forbes,

The nonthermotolerant Campylobacter species C. fetus, C. hyointestinalis, C. iguaniorum, and C. lanienae form a distinct phylogenetic cluster within the genus. These species are primarily isolated from foraging (swine) or grazing (e.g., cattle, sheep) animals and cause sporadic and infrequent human illness. Previous typing studies identified three putative novel C. ... Read more >>

Genome Biol Evol (Genome biology and evolution)
[2017, 9(7):1843-1858]

Cited: 9 times

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Complete Genome Sequence of a Shiga Toxin-Producing Enterobacter cloacae Clinical Isolate.

Michelle Qiu Carter, Antares Pham, Steven Huynh, Xiaohua He,

Enterobacter cloacae strain M12X01451 was isolated from a patient with mild diarrhea. This strain produces a novel subtype of Shiga toxin 1, Stx1e. The Stx1e-converting prophage in strain M12X01451 is stable and can infect other bacteria following induction. Here we report the complete genome sequence and annotation of strain M12X01451. ... Read more >>

Genome Announc (Genome announcements)
[2017, 5(37):]

Cited: 1 time

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Generation of the membrane potential and its impact on the motility, ATP production and growth in Campylobacter jejuni.

Anne-Xander van der Stel, Fred C Boogerd, Steven Huynh, Craig T Parker, Linda van Dijk, Jos P M van Putten, Marc M S M Wösten,

The generation of a membrane potential (Δψ), the major constituent of the proton motive force (pmf), is crucial for ATP synthesis, transport of nutrients and flagellar rotation. Campylobacter jejuni harbors a branched electron transport chain, enabling respiration with different electron donors and acceptors. Here, we demonstrate that a relatively high ... Read more >>

Mol. Microbiol. (Molecular microbiology)
[2017, 105(4):637-651]

Cited: 3 times

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Local genes for local bacteria: evidence of allopatry in the genomes of transatlantic Campylobacter populations

Ben Pascoe, Guillaume Meric, Koji Yahara, Helen Wimalarathna, Susan Murray, Matthew Hitchings, Emma Sproston, Catherine Carrillo, Eduardo Taboada, Kerry Cooper, Steven Huynh, Alison Cody, Keith Jolley, Martin CJ Maiden, Noel McCarthy, Xavier Didelot, Craig Parker, Samuel Sheppard,

The genetic structure of bacterial populations can be related to geographical locations of isolation. In some species, there is a strong correlation between geographical distance and genetic distance, which can be caused by different evolutionary mechanisms. Patterns of ancient admixture in Helicobacter pylori can be reconstructed in concordance with past ... Read more >>

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Genomic Sequence of Campylobacter jejuni subsp. jejuni HS:19 Penner Serotype Reference Strain RM3420.

Craig T Parker, Steven Huynh, Astrid P Heikema,

Campylobacter jejuni subsp. jejuni infections are a leading cause of foodborne gastroenteritis and the most prevalent antecedent to Guillain-Barré syndrome (GBS). Penner serotype HS:19 is among several capsular types shown to be markers for GBS. This study describes the genome of C. jejuni subsp. jejuni HS:19 Penner reference strain RM3420. ... Read more >>

Genome Announc (Genome announcements)
[2017, 5(8):]

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Morphology heterogeneity within a Campylobacter jejuni helical population: the use of calcofluor white to generate rod-shaped C. jejuni 81-176 clones and the genetic determinants responsible for differences in morphology within 11168 strains.

Emilisa Frirdich, Jacob Biboy, Steven Huynh, Craig T Parker, Waldemar Vollmer, Erin C Gaynor,

Campylobacter jejuni helical shape is important for colonization and host interactions with straight mutants having altered biological properties. Passage on calcofluor white (CFW) resulted in C. jejuni 81-176 isolates with morphology changes: either a straight morphology from frameshift mutations and single nucleotide polymorphisms in peptidoglycan hydrolase genes pgp1 or pgp2 ... Read more >>

Mol. Microbiol. (Molecular microbiology)
[2017, 104(6):948-971]

Cited: 2 times

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Complete Annotated Genome Sequences of Three Campylobacter jejuni Strains Isolated from Naturally Colonized Farm-Raised Chickens.

Michael E Taveirne, Drew T Dunham, Andrew Perault, Jessica M Beauchamp, Steven Huynh, Craig T Parker, Victor J DiRita,

Campylobacter jejuni is a leading cause of bacterially derived foodborne illness. Human illness is commonly associated with the handling and consumption of contaminated poultry products. Three C. jejuni strains were isolated from cecal contents of three different naturally colonized farm-raised chickens. The complete genomes of these three isolates are presented here. ... Read more >>

Genome Announc (Genome announcements)
[2017, 5(4):]

Cited: 2 times

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Complete Genome Sequences of Multidrug-Resistant Campylobacter jejuni Strain 14980A (Turkey Feces) and Campylobacter coli Strain 14983A (Housefly from a Turkey Farm), Harboring a Novel Gentamicin Resistance Mobile Element.

William G Miller, Steven Huynh, Craig T Parker, Jeffrey A Niedermeyer, Sophia Kathariou,

Multidrug resistance (MDR) in foodborne pathogens is a major food safety and public health issue. Here we describe whole-genome sequences of two MDR strains of Campylobacter jejuni and Campylobacter coli from turkey feces and a housefly from a turkey farm. Both strains harbor a novel chromosomal gentamicin resistance mobile element. ... Read more >>

Genome Announc (Genome announcements)
[2016, 4(5):]

Cited: 4 times

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Complete Genomic Sequence of Campylobacter jejuni subsp. jejuni HS:19 Strain RM1285 Isolated from Packaged Chicken.

Craig T Parker, Steven Huynh, Astrid P Heikema,

Poultry products serve as the main source of Campylobacter jejuni subsp. jejuni infections in humans. C. jejuni subsp. jejuni infections are a leading cause of foodborne gastroenteritis and are a prevalent antecedent to Guillain-Barré syndrome. This study describes the genome of C. jejuni subsp. jejuni HS:19 strain RM1285, isolated from ... Read more >>

Genome Announc (Genome announcements)
[2016, 4(5):]

Cited: 1 time

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High-Frequency Variation of Purine Biosynthesis Genes Is a Mechanism of Success in Campylobacter jejuni.

Andrew Cameron, Steven Huynh, Nichollas E Scott, Emilisa Frirdich, Dmitry Apel, Leonard J Foster, Craig T Parker, Erin C Gaynor,

UNLABELLED:Phenotypic variation is prevalent in the zoonotic pathogen Campylobacter jejuni, the leading agent of enterocolitis in the developed world. Heterogeneity enhances the survival and adaptive malleability of bacterial populations because variable phenotypes may allow some cells to be protected against future stress. Exposure to hyperosmotic stress previously revealed prevalent differences ... Read more >>

mBio (mBio)
[2015, 6(5):e00612-15]

Cited: 5 times

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Complete Genome Sequences of Two Outbreak Strains of Salmonella enterica subsp. enterica Serovar Thompson Associated with Cilantro.

Craig T Parker, Steven Huynh, Lisa Gorski, Kerry K Cooper, William G Miller,

Salmonella enterica subsp. enterica serovar Thompson strains RM1984 (CADPH-99A2334) and RM1986 (CADPH-99A2345) are associated with a 1999 outbreak in contaminated cilantro. We report here the complete genome sequences and annotation of these two S. Thompson strains. These genomes are distinct and provide additional data for our understanding of S. enterica. ... Read more >>

Genome Announc (Genome announcements)
[2015, 3(6):]

Cited: 0 times

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