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Otago Medical School staff profiles

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

Kim, C. C., Healey, G. R., Kelly, W. J., Patchett, M. L., Jordens, Z., Tannock, G. W., … Rosendale, D. I. (2019). Genomic insights from Monoglobus pectinilyticus: A pectin-degrading specialist bacterium in the human colon. ISME Journal. Advance online publication. doi: 10.1038/s41396-019-0363-6

Centanni, M., Ferguson, S. A., Sims, I. M., Biswas, A., & Tannock, G. W. (2019). Bifidobacterium bifidum ATCC 15696 and Bifidobacterium breve 24b metabolic interaction based on 2'-O-fucosyl-lactose studied in steady-state cultures in a Freter-style chemostat. Applied & Environmental Microbiology. Advance online publication. doi: 10.1128/aem.02783-18

Murphy, R., Morgan, X. C., Wang, X. Y., Wickens, K., Purdie, G., Fitzharris, P., Otal, A., Lawley, B., Stanley, T., Barthow, C., Crane, J., … Tannock, G. W. (2019). Eczema-protective probiotic alters infant gut microbiome functional capacity but not composition: Sub-sample analysis from a RCT. Beneficial Microbes, 10(1), 5-17. doi: 10.3920/bm2017.0191

Centanni, M., Lawley, B., Butts, C. A., Roy, N. C., Lee, J., Kelly, W. J., & Tannock, G. W. (2018). Bifidobacterium pseudolongum in the ceca of rats fed Hi-Maize starch has characteristics of a keystone species in bifidobacterial blooms. Applied & Environmental Microbiology, 84(15), e00547-18. doi: 10.1128/AEM.00547-18

Taylor, R. W., Gray, A. R., Heath, A.-L. M., Galland, B. C., Lawrence, J., Sayers, R., Healey, D., Tannock, G. W., Meredith-Jones, K. A., Hanna, M., Hatch, B., & Taylor, B. J. (2018). Sleep, nutrition, and physical activity interventions to prevent obesity in infancy: Follow-up of the Prevention of Overweight in Infancy (POI) randomized controlled trial at ages 3.5 and 5 y. American Journal of Clinical Nutrition, 108(2), 228, 236. doi: 10.1093/ajcn/nqy090

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). Probiotics: a critical review. Wymondham, UK: Horizon Scientific Press, 161p.

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

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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

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. (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.

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

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.

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. (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.

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.

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). 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. (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). 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). 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). 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. (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., Healey, G. R., Kelly, W. J., Patchett, M. L., Jordens, Z., Tannock, G. W., … Rosendale, D. I. (2019). Genomic insights from Monoglobus pectinilyticus: A pectin-degrading specialist bacterium in the human colon. ISME Journal. Advance online publication. doi: 10.1038/s41396-019-0363-6

Murphy, R., Morgan, X. C., Wang, X. Y., Wickens, K., Purdie, G., Fitzharris, P., Otal, A., Lawley, B., Stanley, T., Barthow, C., Crane, J., … Tannock, G. W. (2019). Eczema-protective probiotic alters infant gut microbiome functional capacity but not composition: Sub-sample analysis from a RCT. Beneficial Microbes, 10(1), 5-17. doi: 10.3920/bm2017.0191

Centanni, M., Ferguson, S. A., Sims, I. M., Biswas, A., & Tannock, G. W. (2019). Bifidobacterium bifidum ATCC 15696 and Bifidobacterium breve 24b metabolic interaction based on 2'-O-fucosyl-lactose studied in steady-state cultures in a Freter-style chemostat. Applied & Environmental Microbiology. Advance online publication. doi: 10.1128/aem.02783-18

Centanni, M., Lawley, B., Butts, C. A., Roy, N. C., Lee, J., Kelly, W. J., & Tannock, G. W. (2018). Bifidobacterium pseudolongum in the ceca of rats fed Hi-Maize starch has characteristics of a keystone species in bifidobacterial blooms. Applied & Environmental Microbiology, 84(15), e00547-18. doi: 10.1128/AEM.00547-18

Centanni, M., Lawley, B., Butts, C. A., Roy, N., Lee, J., Kelly, W. J., & Tannock, G. W. (2018). Bifidobacterium pseudolongum has characteristics of a keystone species in bifidobacterial blooms in the ceca of rats fed Hi-Maize starch. Applied & Environmental Microbiology. Advance online publication. doi: 10.1128/aem.00547-18

Taylor, R. W., Gray, A. R., Heath, A.-L. M., Galland, B. C., Lawrence, J., Sayers, R., Healey, D., Tannock, G. W., Meredith-Jones, K. A., Hanna, M., Hatch, B., & Taylor, B. J. (2018). Sleep, nutrition, and physical activity interventions to prevent obesity in infancy: Follow-up of the Prevention of Overweight in Infancy (POI) randomized controlled trial at ages 3.5 and 5 y. American Journal of Clinical Nutrition, 108(2), 228, 236. doi: 10.1093/ajcn/nqy090

Bell, T. J., Draper, S. L., Centanni, M., Carnachan, S. M., Tannock, G. W., & Sims, I. M. (2018). Characterization of polysaccharides from feijoa fruits (Acca sellowiana Berg.) and their utilization as growth substrates by gut commensal Bacteroides species. Journal of Agricultural & Food Chemistry, 66(50), 13277-13284. doi: 10.1021/acs.jafc.8b05080

Leong, C., Taylor, R. W., Haszard, J. J., Fleming, E. A., Tannock, G. W., Szymlek-Gay, E. A., … Carter, H., … Heath, A.-L. M. (2018). Relative validity and reproducibility of a food frequency questionnaire to assess nutrients and food groups of relevance to the gut microbiota in young children. Nutrients, 10(11), 1627. doi: 10.3390/nu10111627

Lawley, B., Centanni, M., Watanabe, J., Sims, I., Carnachan, S., Broadbent, R., Lee, P. S., … Tannock, G. W. (2018). Tuf gene sequence variation in Bifidobacterium longum subspecies infantis detected in the fecal microbiota of Chinese infants. Applied & Environmental Microbiology. Advance online publication. doi: 10.1128/aem.00336-18

Wilson, R., Willis, J., Gearry, R. B., Hughes, A., Lawley, B., Skidmore, P., Frampton, C., Fleming, E., Anderson, A., Jones, L., Tannock, G. W., & Carr, A. C. (2018). SunGold kiwifruit supplementation of individuals with prediabetes alters gut microbiota and improves Vitamin C status, anthropometric and clinical markers. Nutrients, 10, 895. doi: 10.3390/nu10070895

Leong, C., Haszard, J. J., Lawley, B., Otal, A., Taylor, R. W., Szymlek-Gay, E. A., Fleming, E. A., Daniels, L., Fangupo, L. J., Tannock, G. W., & Heath, A.-L. M. (2018). Mediation analysis as a means of identifying dietary components that affect the fecal microbiota of infants weaned by modified baby-led, compared to traditional, approaches. Applied & Environmental Microbiology. Advance online publication. doi: 10.1128/aem.00914-18

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, 67, 4992-4998. 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

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

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

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

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., Lawley, B., Munro, K., Sims, I. M., Lee, J., Butts, C. A., & Roy, N. (2014). RNA-stable isotope probing 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

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

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

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

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

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

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

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

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

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., 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

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

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

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

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

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

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

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

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.

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.

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

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

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

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

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.

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.

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.

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.

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.

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

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.

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.

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.

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

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.

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.

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.

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.

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.

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