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Professor Clive Ronson

Chair in Genetics, Department of Microbiology and Immunology

Professor Clive RonsonClive is a microbial geneticist with primary research interests in how microbes and plants recognise each other and develop a nitrogen-fixing symbiosis, and in microbial evolution by horizontal gene transfer and adaptive mutation.

He is one of two international partners of the Centre for Carbohydrate Recognition and Signalling based in Denmark, and is a Fellow of the Royal Society of New Zealand.

For further information on Clive:

Teaching

Clive is the convener of GENE 221 Molecular and Microbial Genetics

Clive also teaches in:

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Publications

Panda, P., Vanga, B. R., Lu, A., Fiers, M., Fineran, P. C., Butler, R., … Ronson, C. W., & Pitman, A. R. (2016). Pectobacterium atrosepticum and Pectobacterium carotovorum harbor distinct, independently acquired integrative and conjugative elements encoding coronafacic acid that enhance virulence on potato stems. Frontiers in Microbiology, 7, 397. doi: 10.3389/fmicb.2016.00397

Haskett, T. L., Terpolilli, J. J., Bekuma, A., O'Hara, G. W., Sullivan, J. T., Wang, P., Ronson, C. W., & Ramsay, J. P. (2016). Assembly and transfer of tripartite integrative and conjugative genetic elements. PNAS, 113(42), 12268-12273. doi: 10.1073/pnas.1613358113

Muszyński, A., Heiss, C., Hjuler, C. T., Sullivan, J. T., Kelly, S. J., Thygesen, M. B., … Ronson, C. W. (2016). Structures of exopolysaccharides involved in receptor-mediated perception of Mesorhizobium loti by Lotus japonicus. Journal of Biological Chemistry, 291(40), 20946-20961. doi: 10.1074/jbc.M116.743856

Ramsay, J. P., Tester, L. G. L., Major, A. S., Sullivan, J. T., Edgar, C. D., Kleffmann, T., … Tate, W. P., … Ronson, C. W. (2015). Ribosomal frameshifting and dual-target antiactivation restrict quorum-sensing-activated transfer of a mobile genetic element. PNAS, 112(3), 4104-4109. doi: 10.1073/pnas.1501574112

Kawaharada, Y., Kelly, S., Wibroe Nielsen, M., Hjuler, C. T., Gysel, K., Muszyński, A., … Ronson, C. W., … Stougaard, J. (2015). Receptor-mediated exopolysaccharide perception controls bacterial infection. Nature, 523, 308-312. doi: 10.1038/nature14611

Chapter in Book - Research

Saeki, K., & Ronson, C. W. (2014). Genome sequence and gene functions in Mesorhizobium loti and relatives. In S. Tabata & J. Stougaard (Eds.), Compendium of plant genomes: The Lotus japonicus genome. (pp. 41-57). Berlin, Germany: Springer. doi: 10.1007/978-3-662-44270-8_5

Ronson, C. W., Hynes, M. F., Ramsay, J. P., & Sullivan, J. T. (2013). Symbiosis islands. In S. Maloy & K. Hughes (Eds.), Brenner's encyclopedia of genetics. (2nd ed.) (pp. 598-600). London, UK: Elsevier. doi: 10.1016/B978-0-12-374984-0.01497-2

Ronson, C. W., Sullivan, J. T., Trzebiatowski, J. R., Gouzy, J., & de Bruijn, F. J. (2002). Comparative genomics of the symbiosis islands of Mesorhizobium loti. In S. A. Leong, C. Allen & E. W. Triplett (Eds.), Biology of Plant-Microbe Interactions: Volume 3. (pp. 325-330). St Paul, Minnesota, USA: International Society for Molecular Plant Microbes Interactions.

de Bruijn, F. J., Ampe, F., Batut, J., Berges, H., Davalos, M., Davey, M., … Ronson, C. W., … Sullivan, J. T., … Vriezen, C. (2002). Genetics and genomics of stress - Induced gene expression in rhizobia. In T. Finan, M. O'Brian, D. Layzell, K. Vessey & W. Newton (Eds.), Nitrogen Fixation: Global Perspectives. (pp. 75-79). Oxford and New York: CABI Publishing.

Ronson, C. W., Sullivan, J. T., Wijkstra, G. S., Carlton, T. M., Muirhead, K., Trzebiatowski, J. R., … de Bruijn, F. J. (2002). Genome diversity at the PHE-tRNA locus in a field population of mesorhizobia. In T. Finan, M. O'Brian, D. Layzell, J. Vessey & W. Newton (Eds.), Nitrogen Fixation: Global Perspectives. (pp. 66-74). New York and Oxford: CABI Publishing.

Ronson, C. W., & Sullivan, J. T. (2001). Symbiosis islands. In S. Brenner & J. H. Miller (Eds.), Encyclopedia of Genetics. (pp. 1902-1903). London: Academic Press.

Sullivan, J. T., Trzebiatowski, J. R., de Bruijn, F. J., & Ronson, C. W. (2000). The symbiosis island of a Mesorhizobium strain that nodulates Lotus. In E. W. Triplett (Ed.), Prokaryotic Nitrogen Fixation: A Model System for Analysis of a Biological Process. (pp. 693-704). Wymondham, UK: Horizon Scientific Press.

Palacios, R., Boistard, P., Fonstein, M., Gottfert, M., Perret, X., Ronson, C. W., & Sobral, B. (1998). Genome structure in nitrogen-fixing organisms. In C. Elmerich, A. Kondorosi & W. E. Newton (Eds.), Biological Nitrogen Fixation for the 21st Century. (pp. 541-547). Netherlands: Kluwer Academic Publishers.

Ronson, C. W., & Lowther, W. L. (1996). Issues affecting the competiveness of white clover rhizobia. In White Clover: New Zealand's Competitive Edge. (pp. 87-90). Christchurch: Agronomy Society of New Zealand and New Zealand Gr.

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Journal - Research Article

Panda, P., Vanga, B. R., Lu, A., Fiers, M., Fineran, P. C., Butler, R., … Ronson, C. W., & Pitman, A. R. (2016). Pectobacterium atrosepticum and Pectobacterium carotovorum harbor distinct, independently acquired integrative and conjugative elements encoding coronafacic acid that enhance virulence on potato stems. Frontiers in Microbiology, 7, 397. doi: 10.3389/fmicb.2016.00397

Muszyński, A., Heiss, C., Hjuler, C. T., Sullivan, J. T., Kelly, S. J., Thygesen, M. B., … Ronson, C. W. (2016). Structures of exopolysaccharides involved in receptor-mediated perception of Mesorhizobium loti by Lotus japonicus. Journal of Biological Chemistry, 291(40), 20946-20961. doi: 10.1074/jbc.M116.743856

Haskett, T. L., Terpolilli, J. J., Bekuma, A., O'Hara, G. W., Sullivan, J. T., Wang, P., Ronson, C. W., & Ramsay, J. P. (2016). Assembly and transfer of tripartite integrative and conjugative genetic elements. PNAS, 113(42), 12268-12273. doi: 10.1073/pnas.1613358113

Ramsay, J. P., Tester, L. G. L., Major, A. S., Sullivan, J. T., Edgar, C. D., Kleffmann, T., … Tate, W. P., … Ronson, C. W. (2015). Ribosomal frameshifting and dual-target antiactivation restrict quorum-sensing-activated transfer of a mobile genetic element. PNAS, 112(3), 4104-4109. doi: 10.1073/pnas.1501574112

Kawaharada, Y., Kelly, S., Wibroe Nielsen, M., Hjuler, C. T., Gysel, K., Muszyński, A., … Ronson, C. W., … Stougaard, J. (2015). Receptor-mediated exopolysaccharide perception controls bacterial infection. Nature, 523, 308-312. doi: 10.1038/nature14611

Vanga, B. R., Ramakrishnan, P., Butler, R. C., Toth, I. K., Ronson, C. W., Jacobs, J. M. E., & Pitman, A. R. (2015). Mobilization of horizontally acquired island 2 is induced in planta in the phytopathogen Pectobacterium atrosepticum SCRI1043 and involves the putative relaxase ECA0613 and quorum sensing. Environmental Microbiology, 17(11), 4730-4744. doi: 10.1111/1462-2920.13024

Delestre, C., Laugraud, A., Ridgeway, H. J., Ronson, C., O'Callaghan, M., Barrett, B., … Wakelin, S. (2015). Genome sequence of the clover symbiont Rhizobium leguminosarum bv. trifolii strain CC275e. Standards in Genomic Sciences, 10, 121. doi: 10.1186/s40793-015-0110-1

Reeve, W., Sullivan, J., Ronson, C., Tian, R., Munk, C., Han, C., … Kyrpides, N. (2015). High-quality draft genome sequence of the Lotus spp. microsymbiont Mesorhizobium loti strain CJ3Sym. Standards in Genomic Sciences, 10, 54. doi: 10.1186/s40793-015-0049-2

Kelly, S., Sullivan, J., Ronson, C., Tian, R., Bräu, L., Davenport, K., … Reeve, W. (2014). Genome sequence of the Lotus spp. microsymbiont Mesorhizobium loti strain NZP2037. Standards in Genomic Sciences, 9, 7. doi: 10.1186/1944-3277-9-7

Reeve, W., Sullivan, J., Ronson, C., Tian, R., Bräu, L., Davenport, K., … Kyrpides, N. (2014). Genome sequence of the Lotus corniculatus microsymbiont Mesorhizobium loti strain R88B. Standards in Genomic Sciences, 9, 3. doi: 10.1186/1944-3277-9-3

Kelly, S., Sullivan, J., Ronson, C., Tian, R., Bräu, L., Munk, C., … Reeve, W. (2014). Genome sequence of the Lotus spp. microsymbiont Mesorhizobium loti strain R7A. Standards in Genomic Sciences, 9, 6. doi: 10.1186/1944-3277-9-6

Dam, S., Dyrlund, T. F., Ussatjuk, A., Jochimsen, B., Nielsen, K., Goffard, N., … Ronson, C. W., … Stougaard, J. (2014). Proteome reference maps of the Lotus japonicus nodule and root. Proteomics, 14(2-3), 230-240. doi: 10.1002/pmic.201300353

Maolanon, N. N., Blaise, M., Sørensen, K. K., Thygesen, M. B., Cló, E., Sullivan, J. T., Ronson, C. W., … Jensen, K. J. (2014). Lipochitin oligosaccharides immobilized through oximes in glycan microarrays bind LysM proteins. ChemBioChem, 15(3), 425-434. doi: 10.1002/cbic.201300520

Ramsay, J. P., Major, A. S., Komarovsky, V. M., Sullivan, J. T., Dy, R. L., Hynes, M. F., … Ronson, C. W. (2013). A widely conserved molecular switch controls quorum sensing and symbiosis island transfer in Mesorhizobium loti through expression of a novel antiactivator. Molecular Microbiology, 87(1), 1-13. doi: 10.1111/mmi.12079

Sheen, T. R., O'Callaghan, M., Smalley, D. J., Ronson, C. W., & Hurst, M. R. H. (2013). Serratia entomophila bet gene induction and the impact of glycine betaine accumulation on desiccation tolerance. Journal of Applied Microbiology, 114(2), 470-481. doi: 10.1111/jam.12052

Kelly, S. J., Muszyński, A., Kawaharada, Y., Hubber, A. M., Sullivan, J. T., Sandal, N., … Ronson, C. W. (2013). Conditional requirement for exopolysaccharide in the Mesorhizobium-Lotus symbiosis. Molecular Plant-Microbe Interactions, 26(3), 319-329. doi: 10.1094/mpmi-09-12-0227-r

Sullivan, J. T., Brown, S. D., & Ronson, C. W. (2013). The NifA-RpoN regulon of Mesorhizobium loti strain R7A and its symbiotic activation by a novel LacI/GalR-family regulator. PLoS ONE, 8(1), e53762. doi: 10.1371/journal.pone.0053762

Broghammer, A., Krusell, L., Blaise, M., Sauer, J., Sullivan, J. T., Maolanon, N., … Ronson, C. W., … Stougaard, J. (2012). Legume receptors perceive the rhizobial lipochitin oligosaccharide signal molecules by direct binding. PNAS, 109(34), 13859-13864. doi: 10.1073/pnas.1205171109

Vanga, B. R., Butler, R. C., Toth, I. K., Ronson, C. W., & Pitman, A. R. (2012). Inactivation of PbTopo IIIβ causes hyper-excision of the Pathogenicity Island HAI2 resulting in reduced virulence of Pectobacterium atrosepticum. Molecular Microbiology, 84(4), 648-663. doi: 10.1111/j.1365-2958.2012.08050.x

Madsen, L. H., Tirichine, L., Jurkiewicz, A., Sullivan, J. T., Heckmann, A. B., Bek, A. S., Ronson, C. W., … Stougaard, J. (2010). The molecular network governing nodule organogenesis and infection in the model legume Lotus japonicus. Nature Communications, 1. doi: 10.1038/ncomms1009

Noisangiam, R., Nuntagij, A., Pongsilp, N., Boonkerd, N., Denduangboripant, J., Ronson, C., & Teaumroong, N. (2010). Heavy metal tolerant Metalliresistens boonkerdii gen. nov., sp. nov., a new genus in the family Bradyrhizobiaceae isolated from soil in Thailand. Systematic & Applied Microbiology, 33(7), 374-382. doi: 10.1016/j.syapm.2010.06.002

Ramsay, J. P., Sullivan, J. T., Jambari, N., Ortori, C. A., Heeb, S., Williams, P., … Lamont, I. L., & Ronson, C. W. (2009). A LuxRI-family regulatory system controls excision and transfer of the Mesorhizobium loti strain R7A symbiosis island by activating expression of two conserved hypothetical genes. Molecular Microbiology, 73(6), 1141-1155. doi: 10.1111/j.1365-2958.2009.06843.x

Ott, T., Sullivan, J., James, E. K., Flemetakis, E., Günther, C., Gibon, Y., Ronson, C., & Udvardi, M. (2009). Absence of symbiotic leghemoglobins alters bacteroid and plant cell differentiation during development of Lotus japonicus root nodules. Molecular Plant-Microbe Interactions, 22(7), 800-808. doi: 10.1094/MPMI-22-7-0800

Rodpothong, P., Sullivan, J. T., Songsrirote, K., Sumpton, D., Cheung, K. W. J.-T., Thomas-Oates, J., … Ronson, C. W. (2009). Nodulation gene mutants of Mesorhizobium loti R7A—nodZ and nolL mutants have host-specific phenotypes on Lotus spp. Molecular Plant-Microbe Interactions, 22(12), 1546-1554. doi: 10.1094/MPMI-22-12-1546

McIntyre, H. J., Davies, H., Hore, T. A., Miller, S. H., Dufour, J.-P., & Ronson, C. W. (2007). Trehalose biosynthesis in Rhizobium leguminosarum bv. trifolii and its role in desiccation tolerance. Applied & Environmental Microbiology, 73(12), 3984-3992.

Carlton, T. M., Sullivan, J. T., Stuart, G. S., Hutt, K., Lamont, I. L., & Ronson, C. W. (2007). Ferrichrome utilization in a mesorhizobial population: Microevolution of a three-locus system. Environmental Microbiology, 9(12), 2923-2932.

Miller, S. H., Elliot, R. M., Sullivan, J. T., & Ronson, C. W. (2007). Host-specific regulation of symbiotic nitrogen fixation in Rhizobium leguminosarum biovar trifolii. Microbiology, 153, 3184-3195.

Hubber, A. M., Sullivan, J. T., & Ronson, C. W. (2007). Symbiosis-induced cascade regulation of the Mesorhizobium loti R7A VirB/D4 type IV secretion system. Molecular Plant-Microbe Interactions, 20(3), 255-261.

Dodd, S. J., Hurst, M. R. H., Glare, T. R., O'Callaghan, M., & Ronson, C. W. (2006). Occurrence of sep insecticidal toxin complex genes in Serratia spp. and Yersinia frederiksenii. Applied & Environmental Microbiology, 72(10), 6584-6592.

Ramsay, J. P., Sullivan, J. T., Stuart, G. S., Lamont, I. L., & Ronson, C. W. (2006). Excision and transfer of the Mesorhizobium loti R7A symbiosis island requires an integrase IntS, a novel recombination directionality factor RdfS, and a putative relaxase RlxS. Molecular Microbiology, 62(3), 723-734. doi: 10.1111/j.1365-2958.2006.05396.x

Hubber, A., Vergunst, A. C., Sullivan, J. T., Hooykaas, P. J. J., & Ronson, C. W. (2004). Symbiotic phenotypes and translocated effector proteins of the Mesorhizobium loti strain R7A VirB/D4 type IV secretion system. Molecular Microbiology, 54(2), 561-574.

Sullivan, J. T., Trzebiatowski, J. R., Cruickshank, R. W., Gouzy, J., Brown, S. D., Elliot, R. M., Fleetwood, D. J., McCallum, N. G., … Stuart, G. S., Weaver, J. E., Webby, R. J., … Ronson, C. W. (2002). Comparative sequence analysis of the symbiosis island of Mesorhizobium loti strain R7A. Journal of Bacteriology, 184(11), 3086-3095. doi: 10.1128/JB.184.11.3086-3095.2002

Sullivan, J. T., Brown, S. D., Yocum, R. R., & Ronson, C. W. (2001). The bio operon on the acquired symbiosis island of Mesorhizobium sp. strain R7A includes a novel gene involved in pimeloyl-CoA synthesis. Microbiology, 147, 1315-1322.

Hurst, M. R. H., Glare, T. R., Jackson, T. A., & Ronson, C. W. (2000). Plasmid-located pathogenicity determinants of Serratia entomophila, the causal agent of amber disease of grass grub, show similarity to the insecticidal toxins of Photorhabdus luminescens. Journal of Bacteriology, 182(18), 5127-5138.

Pryor, H. N., Lowther, W., McIntyre, H. J., & Ronson, C. W. (1998). An inoculant Rhizobium strain for improved establishment and growth of hexaploid Caucasian clover (Trifolium ambiguum). New Zealand Journal of Agricultural Research, 41, 179-189.

Kadrmas, J. L., Allaway, D., Studholme, R. E., Sullivan, J. T., Ronson, C. W., Poole, P. R., & Raetz, C. R. (1998). Cloning and overexpression of glycosyltransferases that generate the lipopolysaccharide core of Rhizobium leguminosarum. Journal of Biological Chemistry, 273(41), 26432-26440.

Sullivan, J. T., & Ronson, C. W. (1998). Evolution of Rhizobia by acquisition of a 500-kb symbiosis island that integrates into a phe-tRNA gene. PNAS, 95, 5145-5149.

Sullivan, J. T., Eardly, B. D., van Berkum, P., & Ronson, C. W. (1996). Four unnamed species of nonsymbiotic rhizobia isolated from the rhizosphere of Lotus corniculatus. Applied & Environmental Microbiology, 62, 2818-2825.

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Conference Contribution - Published proceedings: Full paper

Elliot, R. M., McIntyre, H. J., Challis, B. C., Pryor, H. N., Lowther, W. L., & Ronson, C. W. (1998). Rhizobium issues affecting the contribution of caucasian clover to New Zealand pastoral agriculture. Proceedings of the New Zealand Grassland Association. 60, (pp. 207-211). Palmerston North: New Zealand Grassland Association. [Full Paper]

Kelstrup, L., Rowarth, J. S., Williams, P. H., & Ronson, C. W. (1996). Nitrogen fixation in peas (Pisum sativum L.), lupins (Lupinus angustifolius L.) and lentils (Lens culinaris Medik.). Proceedings Agronomy Society of N.Z. 26, (pp. 71-74). [Full Paper]

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Conference Contribution - Published proceedings: Abstract

Ronson, C., Stougaard, J., Carlson, R., Muszyński, A., Kawaharada, Y., Sullivan, J., Fowler, B., … Wightman, T. (2015). Perception of rhizobial exopolysaccharide by the host plant in the Mesorhizobium-Lotus symbiosis. Proceedings of the New Zealand Microbiological Society (NZMS) 60th Conference. (pp. 68). Retrieved from http://www.nzmsconference.org.nz/

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