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Health Sciences profile

Professor Gerald Tannock

PositionProfessor
DepartmentDepartment of Microbiology and Immunology
QualificationsBSC(Hons) PhD(Otago) FRSNZ
Research summaryGut microbiota (microbiome)

Research

The gut of vertebrates is home to a bacterial collection of amazing biodiversity. For example, several hundred bacterial species live together in the human colon where they form a self-regulating community. The community is often referred to as the ‘microbiota’. Obligately anaerobic bacteria predominate in the colonic microbiota. They hydrolyze plant residues from the diet that have not been digested in the small intestine. So, the gut microbiota begins the recycling of dietary waste inside the colon by degrading plant polymers and fermenting the hydrolysis products to short chain fatty acids. These fatty acids provide a source of calories for the human because they are taken up by the intestinal mucosa and incorporated into biochemical pathways. Members of the microbiota also recycle human secretions, such as mucus. Our research objectives are to understand how the members of the microbiota (referred to as commensals) live in the gut, and the consequences to the host of this life-long association with these bacteria.

Publications

Tannock, G. W. (2017). Understanding the gut microbiota. Wiley, 184p.

Lawley, B., & Tannock, G. W. (2017). Analysis of 16S rRNA gene amplicon sequences using the QIIME software package. In G. J. Seymour, M. P. Cullinan & N. C. K. Heng (Eds.), Oral biology: Molecular techniques and applications: Methods in molecular biology (Vol. 1537). (2nd ed.) (pp. 153-163). New York, NY: Springer. doi: 10.1007/978-1-4939-6685-1_9

Kim, C. C., Kelly, W. J., Patchett, M. L., Tannock, G. W., Jordens, Z., Stoklosinski, H. M., … Rosendale, D. I. (2017). Monoglobus pectinilyticus gen. nov., sp. nov., a pectinolytic bacterium isolated from human faeces. International Journal of Systematic & Evolutionary Microbiology. Advance online publication. doi: 10.1099/ijsem.0.002395

Lawley, B., Munro, K., Hughes, A., Hodgkinson, A. J., Prosser, C. G., Lowry, D., … Tannock, G. W. (2017). Differentiation of Bifidobacterium longum subspecies longum and infantis by quantitative PCR using functional gene targets. PeerJ, 5, e3375. doi: 10.7717/peerj.3375

Centanni, M., Hutchinson, J. C., Carnachan, S. M., Daines, A. M., Kelly, W. J., Tannock, G. W., & Sims, I. M. (2017). Differential growth of bowel commensal Bacteroides species on plant xylans of differing structural complexity. Carbohydrate Polymers, 157, 1374-1382. doi: 10.1016/j.carbpol.2016.11.017

Authored Book - Research

Tannock, G. W. (2017). Understanding the gut microbiota. Wiley, 184p.

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Edited Book - Research

Tannock, G. W. (Ed.). (2005). Probiotics and prebiotics: Scientific aspects. Norfolk, UK: Caister Academic Press, 230p.

Tannock, G. W. (Ed.). (2002). Probiotics and Prebiotics: Where are we going? Norfolk: Caister Academic Press, 333p.

Tannock, G. W. (Ed.). (1999). Medical importance of the normal microflora. Dordrecht, The Netherlands: Kluwer Academic Publishers, 515p.

Tannock, G. W. (Ed.). (1999). Probiotics: a critical review. Wymondham, UK: Horizon Scientific Press, 161p.

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Chapter in Book - Research

Lawley, B., & Tannock, G. W. (2017). Analysis of 16S rRNA gene amplicon sequences using the QIIME software package. In G. J. Seymour, M. P. Cullinan & N. C. K. Heng (Eds.), Oral biology: Molecular techniques and applications: Methods in molecular biology (Vol. 1537). (2nd ed.) (pp. 153-163). New York, NY: Springer. doi: 10.1007/978-1-4939-6685-1_9

Tannock, G. W. (2010). Analysis of bifidobacterial populations in bowel ecology studies. In B. Mayo & D. van Sinderen (Eds.), Bifidobacteria: Genomics and molecular aspects. (pp. 1-16). Norfolk, UK: Caister Academic Press.

Gopal, P., & Tannock, G. W. (2010). Single and multiple probiotic organisms in therapy of disease. In M. H. Floch & A. S. Kim (Eds.), Probiotics: A clinical guide. (pp. 121-130). Thorofare, NJ: SLACK.

Tannock, G. W. (2009). Microbial succession and gut health: Probiotics. In L.-A. Jaykus, H. H. Wang & L. S. Schlesinger (Eds.), Food-borne microbes: Shaping the host ecosystem. (pp. 63-80). Washington, DC: ASM Press.

Tannock, G. W. (2009). The microbiota of humans. In B. Henderson, M. A. Curtis, R. M. Seymour & N. Donos (Eds.), Periodontal medicine and systems biology. (pp. 129-138). Chichester, UK: Blackwell.

Tannock, G. W. (2009). What pediatricians need to know about the analysis of the gut microbiota. In S. Michail & P. M. Sherman (Eds.), Probiotics in pediatric medicine. (pp. 17-28). Totowa, NJ: Human Press. doi: 10.1007/978-1-60327-289-6

Bibiloni, R., Lay, C., & Tannock, G. W. (2008). Probiotics: Lessons learned from nucleic acid-based analysis of bowel communities. In L. Cocolin & D. Ercolini (Eds.), Molecular techniques in the microbial ecology of fermented foods. (pp. 225-244). New York: Springer Science+Business Media, LLC.

Tannock, G. W. (2008). Role of the indigenous microbiota in health and disease. In J. Versalovic & M. Wilson (Eds.), Therapeutic microbiology: Probiotics and related strategies. (pp. 9-18). Washington, DC: ASM Press.

Tannock, G. W. (2005). Microbiota of mucosal surfaces in the gut of monogastric animals. In J. P. Nataro, P. S. Cohen, H. L. T. Mobley & J. N. Weiser (Eds.), Colonization of Mucosal Surfaces. (5 ed.) (pp. 163-178). Washington D.C.: ASM Press.

Tannock, G. W. (2005). The tangled bank and gut microbial ecology. In G. W. Tannock (Ed.), Probiotics and prebiotics: Scientific aspects. (pp. 217-223). Norfolk, UK: Caister Academic Press.

Bibiloni, R., Walter, J., & Tannock, G. W. (2004). The gut microflora. In M. M. Nakano & P. Zuber (Eds.), Strict and facultative anaerobes: Medical and environmental aspects. (pp. 125-143). UK: Horizon Scientific Press.

Tannock, G. W. (2003). The intestinal microflora. In R. Fuller & G. Perdigón (Eds.), Gut flora, nutrition, immunity and health. (pp. 1-23). Oxford: Blackwell.

Tannock, G. W. (2002). Probiotics and prebiotics: Where are we going? In G. W. Tannock (Ed.), Probiotics and Prebiotics: Where are we going? (pp. 1-39). Wymondham, UK: Caister Academic Press.

Tannock, G. W., & Cook, G. (2002). Enterococci as members of the intestinal microflora of humans. In M. S. Gilmore & et al (Eds.), The Enterococci: Pathogenesis, Molecular Biology, and Antibiotic Resistance. (pp. 101-132). Washington, DC: ASM Press.

Tannock, G. W. (2000). The intestinal microflora: potentially fertile ground for microbial physiologists. In R. K. Poole (Ed.), Advances in Microbial Physiology. (pp. 25-46). London: Academic Press.

Tannock, G. W. (1999). The normal microflora: an introduction. In G. W. Tannock (Ed.), Medical Importance of the normal microflora. (pp. 1-23). Dordrecht, The Netherlands: Kluwer Academic Publishers.

Tannock, G. W. (1999). The microecology of lactobacilli and bifidobacteria inhabiting the digestive tract: essential knowledge for successful probiotic research. In L. A. Hanson & R. H. Yolken (Eds.), Probiotics, other nutritional factors and intestinal microflora. Nestle Nutrition Workshop Series, volume 42. (pp. 17-31). New York: Lippincott-Raven.

Tannock, G. W. (1999). A fresh look at the intestinal microflora. In G. W. Tannock (Ed.), Probiotics: a critical review. (pp. 5-14). Wymondham, UK: Horizon Scientific Press.

Tannock, G. W. (1999). Identification of lactobacilli and bifidobacteria. In G. W. Tannock (Ed.), Probiotics : a critical review. (pp. 45-56). Wymondham, UK: Horizon Scientific Press.

Tannock, G. W. (1999). Modification of the normal microflora. In G. W. Tannock (Ed.), Medical importance of the normal microflora. (pp. 487-506). Dordrecht, The Netherlands: Kluwer Academic Publishers.

Tannock, G. W. (1997). The normal microflora of the gastrointestinal tract of rodents. In R. I. Mackie, B. A. White & R. E. Isaacson (Eds.), Gastrointestinal Microbiology: Volume 2, Gastrointestinal Microbes and Host Interactions. (pp. 187-215). New York: Chapman and Hall.

Tannock, G. W. (1997). Modification of the normal microflora by diet, stress, antimicrobial agents, and probiotics. In R. I. Mackie, B. A. White & R. E. Isaacson (Eds.), Gastrointestinal Microbiology: Volume 2, Gastrointestinal Microbes and Host Interactions. (pp. 434-465). New York: Chapman and Hall.

Tannock, G. W. (1997). Influences of the normal microflora on the animal host. In R. I. Mackie, B. A. White & R. E. Isaacson (Eds.), Gastrointestinal Microbiology: Volume 2, Gastrointestinal Microbes and Host Interactions. (pp. 466-497). New York: Chapman and Hall.

Jenkinson, H. F., Mc Nab, R., Loach, D. M., & Tannock, G. W. (1995). Lipoprotein receptors in raol streptococci. In J. J. Ferretti, T. R. Klaenhammer & F. Brown (Eds.), Genetics of Streptococci, Enterococci and Lactococci. (Development of Biological Standardization; 85). (pp. 333-341). Basel: Karger.

Tannock, G. W. (1995). The microecology of lactic acid-producing bacteria in the gastrointestinal tract. In R. Fuller, P. J. Heidt, V. Rusch & D. van der Waaij (Eds.), Probiotics: Prospects of Use in Opportunistic Infections. (pp. 9-81). Herbon-Dill, Germany: Institute for Microecology(Old Herborn University.

Mc Nab, R., Tannock, G. W., & Jenkinson, H. F. (1995). Characterization of CshA, a high molecular mass adhesin of Streptococcus gordonii. In J. J. Ferretti, T. R. Klaenhammer & F. Brown (Eds.), Genetics of Streptococci, Enterococci and Lactococci. (Development of Biological Standardization 85). (pp. 371-375). Basel: Karger.

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Journal - Research Article

Kim, C. C., Kelly, W. J., Patchett, M. L., Tannock, G. W., Jordens, Z., Stoklosinski, H. M., … Rosendale, D. I. (2017). Monoglobus pectinilyticus gen. nov., sp. nov., a pectinolytic bacterium isolated from human faeces. International Journal of Systematic & Evolutionary Microbiology. Advance online publication. doi: 10.1099/ijsem.0.002395

Centanni, M., Hutchinson, J. C., Carnachan, S. M., Daines, A. M., Kelly, W. J., Tannock, G. W., & Sims, I. M. (2017). Differential growth of bowel commensal Bacteroides species on plant xylans of differing structural complexity. Carbohydrate Polymers, 157, 1374-1382. doi: 10.1016/j.carbpol.2016.11.017

Lawley, B., Munro, K., Hughes, A., Hodgkinson, A. J., Prosser, C. G., Lowry, D., … Tannock, G. W. (2017). Differentiation of Bifidobacterium longum subspecies longum and infantis by quantitative PCR using functional gene targets. PeerJ, 5, e3375. doi: 10.7717/peerj.3375

Ranjitkar, S., Lawley, B., Tannock, G., & Engberg, R. M. (2016). Bacterial successions in the broiler gastrointestinal tract. Applied & Environmental Microbiology, 82(8), 2399-2410. doi: 10.1128/aem.02549-15

Taylor, R. W., Heath, A.-L. M., Galland, B. C., Cameron, S. L., Lawrence, J. A., Gray, A. R., Tannock, G. W., Lawley, B., Healey, D., Sayers, R. M., Hanna, M., Meredith-Jones, K., Hatch, B., & Taylor, B. J. (2016). Three-year follow-up of a randomised controlled trial to reduce excessive weight gain in the first two years of life: Protocol for the POI follow-up study. BMC Public Health, 16, 771. doi: 10.1186/s12889-016-3383-4

Samuelsson, L. M., Young, W., Fraser, K., Tannock, G. W., Lee, J., & Roy, N. C. (2016). Digestive-resistant carbohydrates affect lipid metabolism in rats. Metabolomics, 12(5). doi: 10.1007/s11306-016-1016-7

Daines, A. M., Smart, Z., Sims, I. M., Tannock, G. W., & Hinkley, S. F. R. (2015). Synthesis, characterisation and microbial utilisation of amorphous polysugars from lactose. Carbohydrate Polymers, 117, 223-229. doi: 10.1016/j.carbpol.2014.09.061

Tannock, G. W., Lawley, B., Munro, K., Sims, I. M., Lee, J., Butts, C. A., & Roy, N. (2014). RNA-stable isotope probing (RNA-SIP) shows utilization of carbon from inulin by specific bacterial populations in the rat large bowel. Applied & Environmental Microbiology, 80(7), 2240-2247. doi: 10.1128/aem.03799-13

Wilson, C. M., Loach, D., Lawley, B., Bell, T., Sims, I. M., O'Toole, P. W., … Tannock, G. W. (2014). Lactobacillus reuteri 100-23 modulates urea hydrolysis in the murine stomach. Applied & Environmental Microbiology, 80(19), 6104-6113. doi: 10.1128/aem.01876-14

Kullin, B., Tannock, G. W., Loach, D. M., Kimura, K., Abratt, V. R., & Reid, S. J. (2014). A functional analysis of the formyl-coenzyme A (frc) gene from Lactobacillus reuteri 100-23C. Journal of Applied Microbiology, 116(6), 1657-1667. doi: 10.1111/jam.12500

Tannock, G. W., Taylor, C., Lawley, B., Loach, D., Gould, M., Dunn, A. C., McLellan, A. D., Black, M. A., McNoe, L., Dekker, J., … Collett, M. A. (2014). Altered transcription of murine genes induced in the small bowel by administration of probiotic strain Lactobacillus rhamnosus HN001. Applied & Environmental Microbiology, 80(9), 2851-2859. doi: 10.1128/aem.00336-14

Lawley, B., Sims, I. M., & Tannock, G. W. (2013). Whole-transcriptome shotgun sequencing (RNA-seq) screen reveals upregulation of cellobiose and motility operons of Lactobacillus ruminis L5 during growth on tetrasaccharides derived from barley β-glucan. Applied & Environmental Microbiology, 79(18), 5661-5669. doi: 10.1128/aem.01887-13

Young Yoon, M., Lee, K.-M., Go, J., Park, Y., Cho, Y.-J., Tannock, G. W., & Yoon, S. S. (2013). Functional screening of a metagenomic library reveals operons responsible for enhanced intestinal colonization by gut commensal microbes. Applied & Environmental Microbiology, 79(12), 3829-3838. doi: 10.1128/AEM.00581-13

Young, W., Roy, N. C., Lee, J., Lawley, B., Otter, D., Henderson, G., & Tannock, G. W. (2013). Bowel microbiota moderate host physiological responses to dietary konjac in weanling rats1-3. Journal of Nutrition, 143, 1052-1060. doi: 10.3945/jn.113.174854

Oswari, H., Prayitno, L., Dwipoerwantoro, P. G., Firmansyah, A., Makrides, M., Lawley, B., … Tannock, G. W. (2013). Comparison of stool microbiota compositions, stool alpha1-antitrypsin and calprotectin concentrations, and diarrhoeal morbidity of Indonesian infants fed breast milk or probiotic/prebiotic-supplemented formula. Journal of Paediatrics & Child Health, 49, 1032-1039. doi: 10.1111/jpc.12307

Tannock, G. W., Lawley, B., Munro, K., Pathmanathan, S. G., Zhou, S. J., Makrides, M., … Hodgkinson, A. J. (2013). Comparison of the compositions of the stool microbiotas of infants fed goat milk formula in comparison to cow milk-based formula, or breast milk. Applied & Environmental Microbiology, 79(9), 3040-3048. doi: 10.1128/aem.03910-12

Tannock, G. W., Lawley, B., Munro, K., Lay, C., Taylor, C., Daynes, C., … Thompson-Fawcett, M. (2012). Comprehensive analysis of the bacterial content of stool from patients with chronic pouchitis, normal pouches, or familial adenomatous polyposis pouches. Inflammatory Bowel Diseases, 18(5), 925-934. doi: 10.1002/ibd.21936

Tannock, G. W., Wilson, C. M., Loach, D., Cook, G. M., Eason, J., O'Toole, P. W., … Lawley, B. (2012). Resource partitioning in relation to cohabitation of Lactobacillus species in the mouse forestomach. ISME Journal, 6, 927-938. doi: 10.1038/ismej.2011.161

Lawley, B., & Tannock, G. W. (2012). Nucleic acid-based methods to assess the composition and function of the bowel microbiota. Gastroenterology Clinics of North America, 41(4), 855-868. doi: 10.1016/j.gtc.2012.08.010

Wilson, C. M., Aggio, R. B. M., O'Toole, P. W., Villas-Boas, S., & Tannock, G. W. (2012). Transcriptional and metabolomic consequences of luxS inactivation reveal a metabolic rather than quorum-sensing role for luxS in Lactobacillus reuteri 100-23. Journal of Bacteriology, 194(7), 1743-1746. doi: 10.1128/jb.06318-11

Gore, C., Custovic, A., Tannock, G. W., Munro, K., Kerry, G., Johnson, K., … Woodcock, A. (2012). Treatment and secondary prevention effects of the probiotics Lactobacillus paracasei or Bifidobacterium lactis on early infant eczema: Randomized controlled trial with follow-up until age 3 years. Clinical & Experimental Allergy, 42(1), 112-122. doi: 10.1111/j.1365-2222.2011.03885.x

Young, W., Roy, N. C., Lee, J., Lawley, B., Otter, D., Henderson, G., … Tannock, G. W. (2012). Changes in bowel microbiota induced by feeding weanlings resistant starch stimulate transcriptomic and physiological responses. Applied & Environmental Microbiology, 78(18), 6656-6664. doi: 10.1128/aem.01536-12

Tannock, G. W., Tiong, I. S., Priest, P., Munro, K., Taylor, C., Richardson, A., & Schultz, M. (2011). Testing probiotic strain Escherichia coli Nissle 1917 (Mutaflor) for its ability to reduce carriage of multidrug-resistant E. coli by elderly residents in long-term care facilities. Journal of Medical Microbiology, 60(3), 366-370. doi: 10.1099/jmm.0.025874-0

Sims, I. M., Frese, S. A., Walter, J., Loach, D., Wilson, M., Appleyard, K., … Livingston, M., Baird, M., Cook, G., & Tannock, G. W. (2011). Structure and functions of exopolysaccharide produced by gut commensal Lactobacillus reuteri 100-23. ISME Journal, 5(7), 1115-1124. doi: 10.1038/ismej.2010.201

Preidis, G. A., Hill, C., Guerrant, R. L., Ramakrishna, B. S., Tannock, G. W., & Versalovic, J. (2011). Probiotics, enteric and diarrheal diseases, and global health. Gastroenterology, 140(1), 8-14. doi: 10.1053/j.gastro.2010.11.010

Frese, S. A., Benson, A. K., Tannock, G. W., Loach, D. M., Kim, J., Zhang, M., … Heng, N. C. K., … Walter, J. (2011). The evolution of host specialization in the vertebrate gut symbiont Lactobacillus reuteri. PLoS Genetics, 7(2), e1001314. doi: 10.1371/journal.pgen.1001314

Tayuan, C., Tannock, G. W., & Rodtong, S. (2011). Growth and exopolysaccharide production by Weissella sp. from low-cost substitutes for sucrose. African Journal of Microbiology Research, 5(22), 3693-3701.

Tannock, G. W. (2010). The bowel microbiota and inflammatory bowel diseases. International Journal of Inflammation, 954051. doi: 10.4061/2010/954051

Livingston, M., Loach, D., Wilson, M., Tannock, G. W., & Baird, M. (2010). Gut commensal Lactobacillus reuteri 100-23 stimulates an immunoregulatory response. Immunology & Cell Biology, 88(1), 99-102. doi: 10.1038/icb.2009.71

Tannock, G. W., Munro, K., Taylor, C., Lawley, B., Young, W., Byrne, B., … Louie, T. (2010). A new macrocyclic antibiotic, fidaxomicin (OPT-80), causes less alteration to the bowel microbiota of Clostridium difficile-infected patients than does vancomycin. Microbiology, 156(11), 3354-3359. doi: 10.1099/mic.0.042010-0

Moran, J. P., Walter, J., Tannock, G. W., Tonkonogy, S. L., & Sartor, R. B. (2009). Bifidobacterium animalis causes extensive duodenitis and mild colonic inflammation in monoassociated interleukin-10-deficient mice. Inflammatory Bowel Diseases, 15(7), 1022-1031. doi: 10.1002/ibd.20900

Dekker, J. W., Wickens, K., Black, P. C., Stanley, T. V., Mitchell, E. A., Fitzharris, P., Tannock, G. W., Purdie, G., & Crane, J. (2009). Safety aspects of probiotic bacterial strains Lactobacillus rhamnosus HN001 and Bifidobacterium animalis subsp. lactis HN019 in human infants aged 0-2 years. International Dairy Journal, 19(3), 149-154. doi: 10.1016/j.idairyj.2008.10.004

Stebbings, S. M., Taylor, C., Tannock, G. W., Baird, M. A., & Highton, J. (2009). The immune response to autologous bacteroides in ankylosing spondylitis is characterized by reduced interleukin 10 production. Journal of Rheumatology, 36(4), 797-800. doi: 10.3899/jrheum.080964

Sartor, R. B., Autenreith, I. B., Darfeuille-Michaud, A., Fox, J., Tannock, G. W., Versalovic, J., & Young, V. B. (2008). Challenges in IBD research: Assessing progress and rethinking the research agenda: II. Report of microbial-host interactions workgroup. Inflammatory Bowel Diseases, 14(5), 692-694.

Hoffman, M., Rath, E., Hölzlwimmer, G., Quintanilla-Martinez, L., Loach, D., Tannock, G., & Haller, D. (2008). Lactobacillus reuteri 100-23 transiently activates intestinal epithelial cells of mice that have a complex microbiota during early stages of colonization. Journal of Nutrition, 138(9), 1684-1691.

Bibiloni, R., Tandon, P., Vargas-Voracka, F., Barreto-Zuniga, R., Lupian-Sanchez, A., Rico-Hinojosa, M. A., … Tannock, G. W. (2008). Differential clustering of bowel biopsy-associated bacterial profiles of specimens collected in Mexico and Canada: What do these profiles represent? Journal of Medical Microbiology, 57(1), 111-117. doi: 10.1099/jmm.0.47321-0

Tannock, G. W. (2008). The search for disease-associated compositional shifts in bowel bacterial communities of humans. Trends in Microbiology, 16(10), 488-495.

Tannock, G. W. (2008). Molecular analysis of the intestinal microflora in IBD. Mucosal Immunology, 1(Suppl. 1), S15-S18.

Gore, C., Munro, K., Lay, C., Bibiloni, R., Morris, J., Woodcock, A., … Tannock, G. W. (2008). Bifidobacterium pseudocatenulatum is associated with atopic eczema: A nested case-control study investigating the fecal microbiota of infants. Journal of Allergy & Clinical Immunology, 121(1), 135-140.

Wickens, K., Black, P. N., Stanley, T. V., Mitchell, E., Fitzharris, P., Tannock, G. W., Purdie, G., Crane, J., and the Probiotic Study Group, including Jones, B., Lampshire, P., & Munro, K. (2008). A differential effect of 2 probiotics in the prevention of eczema and atopy: A double-blind, randomized, placebo-controlled trial. Journal of Allergy & Clinical Immunology, 122(4), 788-794. doi: 10.1016/j.jaci.2008.07.011

Matisoo-Smith, E., Roberts, K., Welikala, N., Tannock, G., Chester, P., Feek, D., & Flenley, J. (2008). Recovery of DNA and pollen from New Zealand lake sediments. Quaternary International, 184(1), 139-149.

Sokol, H., Lay, C., Seksik, P., & Tannock, G. W. (2008). Analysis of bacterial bowel communities of IBD patients: What has it revealed? Inflammatory Bowel Diseases, 14(6), 858-867.

Walter, J., Schwab, C., Loach, D. M., Gänzle, M. G., & Tannock, G. W. (2008). Glucosyltransferase A (GtfA) and inulosucrase (Inu) of Lactobacillus reuteri TMW1.106 contribute to cell aggregation, in vitro biofilm formation, and colonization of the mouse gastrointestinal tract. Microbiology, 154, 72-80.

Walter, J., Loach, D. M., Alqumber, M., Rockel, C., Hermann, C., Pfitzenmaier, M., & Tannock, G. W. (2007). D-Alanyl ester depletion of teichoic acids in Lactobacillus reuteri 100-23 results in impaired colonization of the mouse gastrointestinal tract. Environmental Microbiology, 9(7), 1750-1760.

Pope, C., Wilson, J., Taboada, E. N., MacKinnon, J., Felipe Alves, C. A., Nash, J. H. E., … Tannock, G. W. (2007). Epidemiology, relative invasive ability, molecular characterization, and competitive performance of Campylobacter jejuni strains in the chicken gut. Applied & Environmental Microbiology, 73(24), 7959-7966.

Mah, K. W., Chin, V. I. L., Wong, W. S., Lay, C., Tannock, G. W., Shek, L. P., … Lee, B. W. (2007). Effect of a milk formula containing probiotics on the fecal microbiota of Asian infants at risk of atopic diseases. Pediatric Research, 62(6), 674-679.

Schwab, C., Walter, J., Tannock, G. W., Vogel, R. F., & Gänzle, M. G. (2007). Sucrose utilization and impact of sucrose on glycosyltransferase expression in Lactobacillus reuteri. Systematic & Applied Microbiology, 30, 433-443.

Harrow, S. A., Ravindran, V., Butler, R. C., Marshall, J. W., & Tannock, G. W. (2007). Real-time quantitative PCR measurement of ileal Lactobacillus salivarius populations from broiler chickens to determine the influence of farming practices. Applied & Environmental Microbiology, 73(22), 7123-7127. doi: 10.1128/AEM.01289-07

Bibiloni, R., Mangold, M., Madsen, K. L., Fedorak, R. N., & Tannock, G. W. (2006). The bacteriology of biopsies differs between newly diagnosed, untreated, Crohn's disease and ulcerative colitis patients. Journal of Medical Microbiology, 55, 1141-1149.

McBurney, W., Mangold, M., Munro, K., Schultz, M., Rath, H. C., & Tannock, G. W. (2006). PCR/DGGE and 16S rRNA gene library analysis of the colonic microbiota of HLA-B27/β2-microglobulin transgenic rats. Letters in Applied Microbiology, 42, 165-171.

Feek, D. T., Flenley, J. R., Chester, P. I., Welikala, N., Matisoo-Smith, E. A., & Tannock, G. W. (2006). A modified sampler for uncontaminated DNA cores from soft sediments. Journal of Archaeological Science, 33, 573-574. doi: 10.1016/j.jas.2005.09.013

O'Dea, E. E., Fasenko, G. M., Allison, G. E., Korver, D. R., Tannock, G. W., & Guan, L. L. (2006). Investigating the effects of commercial probiotics on broiler chick quality and production efficiency. Poultry Science, 85(10), 1855-1863.

Guban, J., Korver, D. R., Allison, G. E., & Tannock, G. W. (2006). Relationship of dietary antimicrobial drug administration with broiler performance, decreased population levels of Lactobacillus salivarius, and reduced bile salt deconjugation in the ileum of broiler chickens. Poultry Science, 85(12), 2186-2194.

Snart, J., Bibiloni, R., Grayson, T., Lay, C., Zhang, H., Allison, G. E., … Tannock, G. W. (2006). Supplementation of the diet with high-viscosity beta-glucan results in enrichment for lactobacilli in the rat cecum. Applied & Environmental Microbiology, 72(3), 1925-1931.

Bibiloni, R., Simon, M. A., Albright, C., Sartor, B., & Tannock, G. W. (2005). Analysis of the large bowel microbiota of colitic mice using PCR/DGGE. Letters in Applied Microbiology, 41(1), 45-51. doi: 10.1111/j.1472-765X.2005.01720.x

Murray, C. S., Tannock, G. W., Simon, M. A., Harmsen, H. J. M., Welling, G. W., Custovic, A., & Woodcock, A. (2005). Fecal microbiota in sensitized wheezy and non-sensitized non-wheezy children: A nested case-control study. Clinical & Experimental Allergy, 35, 741-745.

Walter, J., Mangold, M., & Tannock, G. W. (2005). Construction, analysis, and β-glucanase screening of a bacterial artificial chromosome library from the large-bowel microbiota of mice. Applied & Environmental Microbiology, 71(5), 2347-2354.

Walter, J., Chagnaud, P., Tannock, G. W., Loach, D. M., Dal Bello, F., Jenkinson, H. F., … Hertel, C. (2005). A high-molecular-mass surface protein (Lsp) and Methionine sulfoxide reductase B (MsrB) contribute to the ecological performance of Lactobacillus reuteri in the murine gut. Applied & Environmental Microbiology, 71(2), 979-986.

Hoentjen, F., Welling, G. W., Harmsen, H. J. M., Zhang, X., Snart, J., Tannock, G. W., … Dieleman, L. A. (2005). Reduction of colitis by prebiotics in HLA-B27 transgenic rats is associated with microflora changes and immunomodulation. Inflammatory Bowel Diseases, 11(11), 977-985.

Tannock, G. W., Ghazally, S., Walter, J., Loach, D., Brooks, H., Cook, G., … Simmers, C., Bremer, P., … Hertel, C. (2005). Ecological behavior of Lactobacillus reuteri 100-23 is affected by mutation of the luxS gene. Applied & Environmental Microbiology, 71(12), 8419-8425.

Hagen, K. E., Guan, L. L., Tannock, G. W., Korver, D. R., & Allison, G. E. (2005). Detection, characterization, and in vitro and in vivo expression of genes encoding S-proteins in Lactobacillus gallinarum strains isolated from chicken crops. Applied & Environmental Microbiology, 71(11), 6633-6643.

Brejnholt, S. M., Tannock, G. W., Moller, P. L., Munro, K., & Tetens, I. (2005). A rye bran diet, rich in plant lignans, has no influences on the composition of the gut microflora in postmenopausal women. Microbial Ecology in Health & Disease, 17, 21-27.

Bibiloni, R., Fedorak, R. N., Tannock, G. W., Madsen, K. L., Gionchetti, P., Campieri, M., … Sartor, R. B. (2005). VSL#3 probiotic-mixture induces remission in patients with active ulcerative colitis. American Journal of Gastroenterology, 100, 1539-1546.

Tannock, G. W., Munro, K., Bibiloni, R., Simon, M. A., Hargreaves, P., Gopal, P., … Welling, G. (2004). Impact of consumption of oligosaccharide-containing biscuits on the fecal microbiota of humans. Applied & Environmental Microbiology, 70(4), 2129-2136.

Tannock, G. W. (2004). A special fondness for lactobacilli. Applied & Environmental Microbiology, 70(6), 3189-3194.

Schultz, M., Munro, K., Tannock, G. W., Melchner, I., Göttl, C., Schwietz, H., … Rath, H. C. (2004). Effects of feeding a probiotic preparation (SIM) containing inulin on the severity of colitis and on the composition of the intestinal microflora in HLA-B27 transgenic rats. Clinical & Diagnostic Laboratory Immunology, 11(3), 581-587.

Young, S. L., Simon, M. A., Baird, M. A., Tannock, G. W., Bibiloni, R., Spencely, K., Lane, J. M., Fitzharris, P., Crane, J., Town, I., … Woodcock, A. (2004). Bifidobacterial species differentially affect expression of cell surface markers and cytokines of dendritic cells harvested from cord blood. Clinical & Diagnostic Laboratory Immunology, 11(4), 686-690.

Tannock, G. W. (2003). Probiotics: Time for a dose of realism. Current Issues in Intestinal Microbiology, 4, 33-42.

Guan, L. L., Hagen, K. E., Tannock, G. W., Korver, D. R., Fasenko, G. M., & Allison, G. E. (2003). Detection and identification of Lactobacillus species in crops of broilers of different ages by using PCR-denaturing gradient gel electrophoresis and amplified ribosomal DNA restriction analysis. Applied & Environmental Microbiology, 69(11), 6750-6757.

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