G. M. Balestra, J. R. Lamichhane, M. B. Kshetri, A. Mazzaglia, and L. Varvaro, First report of olive knot caused by Pseudomonas savastanoi pv. savastanoi in Nepal, Plant Pathology, vol.58, p.393, 2009.

B. N. Hanvantari, A taxonomic study of Pseudomonas papulans Rose, New Zeal J Agr Res, vol.20, pp.557-561, 1917.

C. Hill, New plant disease records in New Zealand, New Zeal J Agr Res, vol.22, pp.641-645, 1979.

A. Mazzaglia, D. Studholme, J. Taratufolo, M. C. Cai, R. Almeida et al., Pseudomonas syringae pv. actinidiae (PSA) isolated form recent bacterial canker of kiwifruit outbreaks belong to the same genetic lineage, Plos One, vol.7, p.36518, 2012.
URL : https://hal.archives-ouvertes.fr/hal-02655790

C. E. Morris, L. L. Kinke, K. Xiao, P. Prior, and D. Sands, Surprising niches for the plant pathogen Pseudomonas syringae, Infect Genet Evol, vol.7, pp.84-92, 2007.

H. E. O'brien, S. Thakur, Y. Gong, P. Fung, J. Zhang et al., Extensive remodeling of the Pseudomonas syringae pv. avellanae type III secretome associated with two independent host shifts onto hazelnut, BMC Microbiol, vol.12, p.141, 2012.

J. M. Young and D. Dye, Bacterial blight of peas caused by Pseudomonas pisi Sackett, 1916 in New Zealand, New Zeal J Agr Res, vol.13, pp.315-324, 1969.

, References for Supplementary methods

G. L. Andersen, O. Menkissoglou, and S. E. Lindow, Occurence and properties of copper-tolerant strains of Pseudomonas syringae isolated from fruit in California, Phytopathology, vol.8, pp.648-656, 1991.

H. Araki, D. Tian, E. M. Goss, K. Jakob, S. S. Halldorsdottir et al., , 2006.

, Presence/absence polymorphism for alternative pathogenicity islands in Pseudomonas viridiflava, a pathogen of Arabidopsis, Proc Natl Acad Sci, vol.103, pp.5887-5892

C. L. Bender, F. Alarcòn-chaidez, and D. C. Gross, Pseudomonas syringae phytotoxins: mode of action, regulation, and biosynthesis by peptide and polyketide synthetases, Microbiol Mol Biol Rev, vol.63, pp.266-292, 1999.

A. Bultreys and I. Gheysen, Biological and molecular detection of toxic lipodepsipeptide-producing Pseudomonas syringae strains and PCR identification in plants, Appl Environ Microbiol, vol.65, pp.1904-1909, 1999.

P. Gerhardt, R. G. Murray, R. N. Costilow, E. W. Nester, W. A. Wood et al.,

, Manual of methods for general bacteriology, 1 st edn

K. Jakob, J. M. Kniskern, and J. Bergelson, The role of pectate lyase and the jasmonic acid defense response in Pseudomonas viridiflava virulence, Mol Plant Microbe Interact, vol.20, pp.146-158, 2007.

C. E. Morris, D. C. Sands, B. A. Vinatzer, C. Glaux, C. Guilbaud et al., The life history of the plant pathogen Pseudomonas syringae is linked to the water cycle, Int Soc Microb Ecol, vol.2, pp.321-355, 2008.
URL : https://hal.archives-ouvertes.fr/hal-02666544

C. E. Morris, D. C. Sands, J. L. Vanneste, J. Montarry, B. Oakley et al., Inferring the evolutionary history of the plant pathogen Pseudomonas syringae from its biogeography in headwaters of rivers in North America, Europe and New Zealand. mBio, vol.1, pp.107-117, 2010.