Emeritus Professor Clive Ronson

2023

Chapter in Book - Research

Ramsay, J., Colombi, E., Terpolilli, J., & Ronson, C. (2023). Symbiosis islands. In Reference module in life sciences. (Online ed.) Elsevier. doi: 10.1016/B978-0-12-822563-9.00071-8

Journal - Research Article

Jowsey, W. J., Morris, C. R. P., Hall, D. A., Sullivan, J. T., Fagerlund, R. D., Eto, K. Y., … Ronson, C. W. (2023). DUF2285 is a novel helix-turn-helix domain variant that orchestrates both activation and antiactivation of conjugative element transfer in proteobacteria. Nucleic Acids Research, gkad457. Advance online publication. doi: 10.1093/nar/gkad457

Kelly, S., Hansen, S. B., Rübsam, H., Saake, P., Pedersen, E. B., Gysel, K., … Sullivan, J. T., … Ronson, C. W., … Stougaard, J. (2023). A glycan receptor kinase facilitates intracellular accommodation of arbuscular mycorrhiza and symbiotic rhizobia in the legume Lotus japonicus. PLoS Biology, 21(5), e3002127. doi: 10.1371/journal.pbio.3002127

Colombi, E., Hill, Y., Lines, R., Sullivan, J. T., Kohlmeier, M. G., Christopherson, C. T., Ronson, C. W., … Ramsay, J. P. (2023). Population genomics of Australian indigenous Mesorhizobium reveals diverse nonsymbiotic genospecies capable of nitrogen-fixing symbioses following horizontal gene transfer. Microbial Genomics, 9, 000918. doi: 10.1099/mgen.0.000918

2022

Journal - Research Article

Ramsay, J. P., Bastholm, T. R., Verdonk, C. J., Tambalo, D. D., Sullivan, J. T., Harold, L. K., … Perry, B. J., Jowsey, W., Morris, C., … Ronson, C. W. (2022). An epigenetic switch activates bacterial quorum sensing and horizontal transfer of an integrative and conjugative element. Nucleic Acids Research, 50(2), 975-988. doi: 10.1093/nar/gkab1217

Conference Contribution - Published proceedings: Abstract

Jowsey, W. J., Morris, C. R. P., Hall, D. A., Sullivan, J. T., Fagerlund, R. D., Eto, K. Y., … Ronson, C. W. (2022). How a previously unrecognized variant of the helix-turn-helix domain can be a transcriptional activator or antiactivator. Proceedings of the Genetics Otago (GO) Annual Symposium. Retrieved from https://blogs.otago.ac.nz/go

Conference Contribution - Poster Presentation (not in published proceedings)

Payne, L. J., Todeschini, T. C., Wu, Y., Meaden, S., Mestre, M. R., Palmer, C., … Hughes, T., Perry, B. J., Ronson, C. W., Fineran, P. C., … Jackson, S. A. (2022, August). Identification of CRISPR-Cas and novel phage defense systems to expand our molecular toolkit. Poster session presented at the CRISPR Technologies Satellite Meeting: Queenstown Research Week, Queenstown, New Zealand.

2021

Journal - Research Article

Gysel, K., Laursen, M., Thygesen, M. B., Lironi, D., Bozsóki, Z., Hjuler, C. T., … Sullivan, J. T., Ronson, C. W., … Andersen, K. R. (2021). Kinetic proofreading of lipochitooligosaccharides determines signal activation of symbiotic plant receptors. PNAS, 118(44), e2111031118. doi: 10.1073/pnas.2111031118

Payne, L. J., Todeschini, T. C., Wu, Y., Perry, B. J., Ronson, C. W., Fineran, P. C., … Jackson, S. A. (2021). Identification and classification of antiviral defence systems in bacteria and archaea with PADLOC reveals new system types. Nucleic Acids Research, 49(19), 10868-10878. doi: 10.1093/nar/gkab883

Colombi, E., Perry, B. J., Sullivan, J. T., Bekuma, A. A., Terpolilli, J. J., Ronson, C. W., & Ramsay, J. P. (2021). Comparative analysis of integrative and conjugative mobile genetic elements in the genus Mesorhizobium. Microbial Genomics, 7, 000657. doi: 10.1099/mgen.0.000657

Journal - Research Other

Perry, B. J., Ferguson, S., Laugraud, A., Wakelin, S. A., Reeve, W., & Ronson, C. W. (2021). Complete genome sequences of Trifolium spp. inoculant strains Rhizobium leguminosarum sv. trifolii TA1 and CC275e: Resources for genomic study of the Rhizobium-Trifolium symbiosis. Molecular Plant-Microbe Interactions, 34(1), 131-134. doi: 10.1094/mpmi-08-20-0220-a

Conference Contribution - Published proceedings: Abstract

Jowsey, W., Morris, C., Hall, D., Sullivan, J., Ramsay, J., & Ronson, C. (2021). Characterisation of FseA domain of unknown function (DUF2285), a novel helix-turn-helix DNA-binding domain. Proceedings of the 16th Congress of the Federation of Asian & Oceanic Biochemists & Molecular Biologists (FAOBMB). (pp. 55). Retrieved from https://www.faobmb2021.org

Payne, L. J., Todeschini, T. C., Wu, Y., Perry, B. J., Ronson, C. W., Fineran, P. C., … Jackson, S. A. (2021). Identification and classification of antiviral defence systems in bacteria and archaea with PADLOC reveals new system types. Proceedings of the 16th Congress of the Federation of Asian & Oceanic Biochemists & Molecular Biologists (FAOBMB). (pp. 20). Retrieved from https://www.faobmb2021.org

Perry, B., Jorrín, B., Sullivan, J., Ferguson, S., Poole, P., & Ronson, C. (2021). Rhizosphere fitness determinants for symbiotic and non-symbiotic competitiveness of Lotus spp. microsymbiont Mesorhizobium japonicum R7A. Proceedings of the 16th Congress of the Federation of Asian & Oceanic Biochemists & Molecular Biologists (FAOBMB). (pp. 283). Retrieved from https://www.faobmb2021.org

Ramsay, J., Bastholm, T., Sullivan, J., Tambalo, D., Harold, L., Verdonk, C., … Perry, B., Jowsey, W., Morris, C., Hynes, M., … Ronson, C. (2021). An epigenetic switch activates bacterial quorum sensing and horizontal transfer of an integrative and conjugative element. Proceedings of the 16th Congress of the Federation of Asian & Oceanic Biochemists & Molecular Biologists (FAOBMB). (pp. 236). Retrieved from https://www.faobmb2021.org

2020

Journal - Research Article

Perry, B. J., Sullivan, J. T., Colombi, E., Murphy, R. J. T., Ramsay, J. P., & Ronson, C. W. (2020). Symbiosis islands of Loteae-nodulating Mesorhizobium comprise three radiating lineages with concordant nod gene complements and nodulation host-range groupings. Microbial Genomics, 6(9), 1-15. doi: 10.1099/mgen.0.000426

Bozsoki, Z., Gysel, K., Hansen, S. B., Lironi, D., Krönauer, C., Feng, F., … Sullivan, J. T., Ronson, C. W., … Radutoiu, S. (2020). Ligand-recognizing motifs in plant LysM receptors are major determinants of specificity. Science, 369(6504), 663-670. doi: 10.1126/science.abb3377

Ferguson, S., Major, A. S., Sullivan, J. T., Bourke, S. D., Kelly, S. J., Perry, B. J., & Ronson, C. W. (2020). Rhizobium leguminosarum bv. trifolii NodD2 enhances competitive nodule colonization in the clover-rhizobium symbiosis. Applied & Environmental Microbiology, 86(18), e01268-20. doi: 10.1128/aem.01268-20

2019

Journal - Research Article

Shi, S., Villamizar, L., Gerard, E., Ronson, C., Wakelin, S., Ballard, R., … O'Callaghan, M. (2019). Increasing biological nitrogen fixation by white clover-rhizobia symbiosis. Journal of New Zealand Grasslands, 81, 231-234. doi: 10.33584/jnzg.2019.81.380

Verdonk, C. J., Sullivan, J. T., Williman, K. M., Nicholson, L., Bastholm, T. R., Hynes, M. F., Ronson, C. W., … Ramsay, J. P. (2019). Delineation of the integrase-attachment and origin-of-transfer regions of the symbiosis island ICEMlSym^R7A. Plasmid, 104, 102416. doi: 10.1016/j.plasmid.2019.102416

2018

Journal - Research Article

Kelly, S., Sullivan, J. T., Kawaharada, Y., Radutoiu, S., Ronson, C. W., & Stougaard, J. (2018). Regulation of Nod factor biosynthesis by alternative NodD proteins at distinct stages of symbiosis provides additional compatibility scrutiny. Environmental Microbiology, 20(1), 97-110. doi: 10.1111/1462-2920.14006

Conference Contribution - Published proceedings: Abstract

Chang, J. T.-C., Sullivan, J. T., Fellows, B. J., Perry, B. J., & Ronson, C. W. (2018). The PrsDE Type I secretion system and novel effector Mln031 are required for efficient nodulation of Lotus pedunculatus by Mesorhizobium loti strain NZP2037. Proceedings of the New Zealand Microbiological Society (NZMS) New Zealand Society for Biochemistry and Molecular Biology (NZSBMB) Joint Annual Conference: Microbes & Molecules. (pp. 118-119). Retrieved from https://www.nzmsconference.org.nz

Ferguson, S., Major, A. S., Sullivan, J. T., & Ronson, C. W. (2018). Identification and characterisation of a second copy of the nod gene regulator, nodD2, in Rhizobium leguminosarum bv. trifolii. Proceedings of the New Zealand Microbiological Society (NZMS) New Zealand Society for Biochemistry and Molecular Biology (NZSBMB) Joint Annual Conference: Microbes & Molecules. (pp. 118). Retrieved from https://www.nzmsconference.org.nz

Morris, C. R. P., Jowsey, W. J., Sullivan, J. T., Ramsay, J. P., & Ronson, C. W. (2018). Characterising QseM, the dual-target antiactivator of Quorum Sensing and horizontal transfer. Proceedings of the New Zealand Microbiological Society (NZMS) New Zealand Society for Biochemistry and Molecular Biology (NZSBMB) Joint Annual Conference: Microbes & Molecules. (pp. 87). Retrieved from https://www.nzmsconference.org.nz

Jowsey, W. J., Morris, C. R. P., Sullivan, J. T., Ramsay, J. P., & Ronson, C. W. (2018). Characterising FseA, a widespread ICE excisionase activator. Proceedings of the New Zealand Microbiological Society (NZMS) New Zealand Society for Biochemistry and Molecular Biology (NZSBMB) Joint Annual Conference: Microbes & Molecules. (pp. 70-71). Retrieved from https://www.nzmsconference.org.nz

Perry, B. J., Sullivan, J. T., Murphy, R., Chang, J., Ramsay, J. P., & Ronson, C. W. (2018). Comparative genomic study of host range determinants in complete Mesorhizobium genomes. Proceedings of the New Zealand Microbiological Society (NZMS) New Zealand Society for Biochemistry and Molecular Biology (NZSBMB) Joint Annual Conference: Microbes & Molecules. (pp. 59). Retrieved from https://www.nzmsconference.org.nz

2017

Conference Contribution - Poster Presentation (not in published proceedings)

Morris, C. R. P., Sullivan, J. T., Gilligan, J., Ramsay, J. P., & Ronson, C. W. (2017, September). Decoding the dual-target antiactivator QseM. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Ferguson, S., Major, A. S., Sullivan, J. T., & Ronson, C. W. (2017, September). Role of nod gene expression in competitive nodule formation by clover rhizobia. Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Conference Contribution - Verbal presentation and other Conference outputs

Wightman, T. P., Muszynski, A., Kelly, S. J., Kawaharada, Y., Stougaard, J., Ronson, C. W., & Sullivan, J. T. (2017, September). Symbiotic phenotypes of exopolysaccharide mutants of Mesorhizobium loti Indicate that the host plant differentially perceives both wild-type and truncated EPS. Verbal presentation at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

2016

Journal - Research Article

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

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

Conference Contribution - Verbal presentation and other Conference outputs

Ronson, C. W., Sullivan, J. T., Harold, L., Tambalo, D. D., Yost, C. K., Hynes, M. F., & Ramsay, J. P. (2016, November). Proficiency to transfer the symbiosis island is a bistable phenotype in Mesorhizobium loti strain R7A populations. Verbal presentation at the Joint Meeting of the New Zealand Microbiological Society (NZMS) and the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB), Christchurch, New Zealand.

Ferguson, S., Major, A. S., Sullivan, J. T., & Ronson, C. W. (2016, November). Role of nod gene expression in competitive nodule formation by clover rhizobia. Verbal presentation at the Joint Meeting of the New Zealand Microbiological Society (NZMS) and the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB), Christchurch, New Zealand.

2015

Chapter in Book - Research

Ramsay, J. P., & Ronson, C. W. (2015). Genetic regulation of symbiosis island transfer in Mesorhizobium loti. In F. J. de Bruijn (Ed.), Biological nitrogen fixation. (pp. 219-223). Hoboken, New Jersey: Wiley. doi: 10.1002/9781119053095

Journal - Research Article

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

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

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

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

Journal - Research Other

Ramsay, J. P., & Ronson, C. W. (2015). Silencing quorum sensing and ICE mobility through antiactivation and ribosomal frameshifting. Mobile Genetic Elements, 5(6), 103-108. doi: 10.1080/2159256X.2015.1107177

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/

Ronson, C. W., Sullivan, J. T., Major, A. S., & Ferguson, S. (2015). The genetic basis of competitive nodule formation by clover rhizobia. Proceedings of the New Zealand Microbiological Society (NZMS) 60th Conference. (pp. 31). Retrieved from http://www.nzmsconference.org.nz/

2014

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

Journal - Research Article

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

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., 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

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

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

2013

Chapter in Book - Research

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

Journal - Research Article

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

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

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

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

2012

Journal - Research Article

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

2011

Conference Contribution - Published proceedings: Abstract

Ramsay, J. P., Sullivan, J. T., Salmond, G. P., & Ronson, C. W. (2011). A conserved novel quorum sensing antiactivator paired with an Xre-family regulator controls symbiosis island excision in Mesorhizobium loti. Proceedings of the 4th American Society for Microbiology (ASM) Conference on Cell-Cell Communication in Bacteria. (pp. 59-60). Washington, DC: ASM. [Abstract]

2010

Journal - Research Article

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

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

2009

Journal - Research Article

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

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

2007

Journal - Research Article

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.

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.

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.

2006

Journal - Research Article

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

2005

Conference Contribution - Poster Presentation (not in published proceedings)

Weaver, J., Sullivan, J., & Ronson, C. (2005, August). Cryptic dct genes of mesorhixobia and their plasmid-dependent activation. Poster session presented at the 15th Annual Queenstown Molecular Biology Meeting: Celebrating the Successes of Molecular Biology, Queenstown, New Zealand.

Conference Contribution - Verbal presentation and other Conference outputs

Weaver, J. E., Sullivan, J. T., & Ronson, C. W. (2005, November). Adaptive mutation in mesorhizobia dependent on an acquired hipAB locus. Verbal presentation at the SBMB Conference: celebrating 50 Years of Microbial Interactions

2004

Journal - Research Article

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.

Conference Contribution - Poster Presentation (not in published proceedings)

Weaver, J., Sullivan, J., & Ronson, C. (2004, July). Cryptic dct genes of mesorhizobia and their activation through mutation in a manner dependent on loci encoded by an indigenous plasmid. Poster session presented at the 6th European Nitrogen Fixation Conference, Toulouse, France.

2002

Chapter in Book - Research

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.

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., 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.

Journal - Research Article

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

Conference Contribution - Published proceedings: Abstract

Weaver, J. E., Sullivan, J. T., & Ronson, C. W. (2002). Cryptic dct genes of mesorhizobium sp. strains R7A and CJ1. In T. Finan, M. O'Brien, D. Layzell, J. Vessey & W. Newton (Eds.), Proceedings of the 13th International Congress on Nitrogen Fixation. (pp. 407). Wallingford, UK: CABI Publishing. [Abstract]

2001

Chapter in Book - Research

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.

Journal - Research Article

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.

Conference Contribution - Published proceedings: Abstract

Shirley, M. J., McDougal, R. L., Aislabie, J., Ronson, C. W., & Cook, G. M. (2001). Characterization of the biphenyl/DDE degradation genes of terrabacter sp.strain DDE-1. Proceedings of the 9th International Symposium on Microbial Ecology. (pp. 357-358). Amsterdam, Netherlands: Eurocongres Conference Management. [Abstract]

2000

Chapter in Book - Research

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.

Journal - Research Article

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.

Conference Contribution - Published proceedings: Abstract

Ronson, C. W., Sullivan, J. T., Trzebiatowski, J. R., & de Bruijn, F. J. (2000). The symbiosis island of a Mesorhizobium strain that nodulates Lotus. In F. O. Pedrosa, M. Hungria, M. G. Yates & W. E. Newton (Eds.), Nitrogen fixation: From Molecules to Crop Productivity. (pp. 275-276). Dordrecht: Kluwer Academic Publishers. [Abstract]

1998

Chapter in Book - Research

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.

Journal - Research Article

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.

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.

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]

1996

Chapter in Book - Research

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.

Journal - Research Article

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.

Conference Contribution - Published proceedings: 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]