Tracy Raivio, University of Alberta

Research

signal transduction bacteriophage colonization E. coli Stress response adaptation biofilms commensal

Latest papers

Bacteriophage Mu contamination impacts interbacterial competition.
Infection and immunity · 2025 · senior author
Simulated Colonic Fluid Replicates the In Vivo Growth Capabilities of Citrobacter rodentium cpxRA Mutants and Uncovers Additive Effects of Cpx-Regulated Genes on Fitness.
Infection and immunity · 2022 · senior author
Contribution of the Locus of Heat Resistance to Growth and Survival of Escherichia coli at Alkaline pH and at Alkaline pH in the Presence of Chlorine.
Microorganisms · 2021

All 5 publications

Latest funding

Microbial Adaptation to the Mammalian Gastrointestinal Tract
CIHR · 2022 · Nominated PI
$944,775
Interactions between envelope stress responses, bacteriophages and the environment
NSERC · 2021 · Principal investigator
$232,000
Envelope stress response regulation of virulence and antibiotic resistance in diarrheal pathogens
CIHR · 2015 · Nominated PI
$742,684

All 10 grants and awards

5 publications.

01

Bacteriophage Mu contamination impacts interbacterial competition.

Pick K, Tsviklist V, Stadel L, Raivio T

Infection and immunity2025Senior author

DOI: 10.1128/iai.00268-25 PMID: 41105590

02

Simulated Colonic Fluid Replicates the In Vivo Growth Capabilities of Citrobacter rodentium cpxRA Mutants and Uncovers Additive Effects of Cpx-Regulated Genes on Fitness.

Gilliland A, Gavino C, Gruenheid S, Raivio T

Infection and immunity2022Senior author

DOI: 10.1128/iai.00314-22 PMID: 36000875

03

Contribution of the Locus of Heat Resistance to Growth and Survival of Escherichia coli at Alkaline pH and at Alkaline pH in the Presence of Chlorine.

Zhu T, Wang Z, McMullen LM, Raivio T, Simpson DJ, Gänzle MG

Microorganisms2021

DOI: 10.3390/microorganisms9040701 PMID: 33800639

04

Cooperative Function of TraJ and ArcA in Regulating the F Plasmid tra Operon.

Lu J, Peng Y, Wan S, Frost LS, Raivio T, Glover JNM

Journal of bacteriology2019

DOI: 10.1128/jb.00448-18 PMID: 30322855

05

Identifying your enemies--could envelope stress trigger microbial immunity?

Raivio T

Molecular microbiology2011First author

DOI: 10.1111/j.1365-2958.2010.07485.x PMID: 21255103

Microbial Adaptation to the Mammalian Gastrointestinal Tract

Nominated PICIHR2022Project Grant

Principal investigators: Raivio, Tracy L

Keywords: Bacterial Pathogenesis; Bacteriophage; Colonization; Enteric Microbes; Envelope Stress Responses; Host-Pathogen Interaction; Protein Trafficking; Signal Transduction; Stress Response; Virulence Factors

$944,775

Interactions between envelope stress responses, bacteriophages and the environment

Principal investigatorNSERC2021Discovery Grants Program - Individual

Principal investigators: Raivio, Tracy

Keywords: e. coli; stress response; signal transduction; bacteriophage; biofilms; commensal; colonization; gene regulation; adaptation; competition

$232,000

Envelope stress response regulation of virulence and antibiotic resistance in diarrheal pathogens

Nominated PICIHR2015Operating Grant

Principal investigators: Raivio, Tracy L

Keywords: Antibiotic Resistance; C. Rodentium; Diarrhea; E. Coli; Infectious Diseases; Microbial Pathogenesis; Signal Transduction; Stress Adaptation; Transcriptomics; V. Cholerae

$742,684

Characterization of the Bacterial Stress Response Network

Principal investigatorNSERC2013Discovery Grants Program - Individual

Principal investigators: Raivio, Tracy

$252,000

Systems Biology Approach to Study the Escherichia coli Two-Component Signal Transduction Interactome

Principal investigatorNSERC2012Discovery Grants Program - Individual

Principal investigators: Raivio, Tracy

$26,000

Characterization of the inhibitory periplasmic protein CpxP in Escherichia coli

SupervisorCIHR2009Master's Award: Frederick Banting and Charles Best Canada Graduate Scholarships

Principal investigators: Wong, Julia L

Keywords: Pathogenesis; Protein Interactions; Proteolysis; Signal Sensing; Signal Transduction

$17,500

Control of enteropathogenic Escherichia coli virulence by the Cpx envelope stress response

Nominated PICIHR2009Operating Grant

Principal investigators: Raivio, Tracy L

Keywords: Bacterial Diarrhea; Infectious Diseases; Microarray Analysis Of Gene Expression; Microbial Genetics & Molecular Biology; Microbial Pathogenesis; Virulence Determinant Expression

$873,704

Envelope stress adaptation in escherichia coli

Principal investigatorNSERC2006Discovery Grants Program - Individual

Principal investigators: Raivio, Tracy

$247,000

Chemiluminescent Imager

Co-investigatorNSERC2001Research Tools and Instruments - Category 1 (<$150,000)

Principal investigators: Goss, Gregory

$89,292

Envelope stress adaptation in escherichia coli

Principal investigatorNSERC2001Discovery Grants Program - Individual

Principal investigators: Raivio, Tracy

$165,000

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Frequent collaborators

Samantha Gruenheid

Microbiology and Immunology

1 shared papers, latest 2022

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A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.

Applying for

Paper to mentionMention their CIHR grant from 2022

Subject: Prospective PhD student: signal transduction Dear Professor Raivio, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "Bacteriophage Mu contamination impacts interbacterial competition." (2025), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] I also saw your CIHR-funded project "Microbial Adaptation to the Mammalian Gastrointestinal Tract" (2022), and I would be glad to contribute to work in that direction. Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]