A new haplotype of ‘Candidatus Liberibacter solanacearum’ identified in Spain
Until recently, 3 haplotypes of ‘Candidatus Liberibacter solanacearum’ (EPPO A1 List – solanaceous haplotypes) had been described:
- A and B associated with solanaceous crops (potato, tomato) in the Americas and New Zealand.
- C associated with carrots in Finland.
A 4th haplotype (D) has now been described; it is also associated with carrots but from Spain (mainland and Islas Canarias) and vectored by Bactericera trigonica. During these studies, the presence of haplotype C was confirmed in carrot and psyllid samples (Trioza apicalis) collected from Sweden and Norway. In addition, the presence of haplotype A was confirmed in potato tubers showing symptoms of Zebra chip collected from potato fields in Idaho, Oregon and Washington states (US).
Sources
Nelson WR, Sengoda VG, Alfaro-Fernandez AO, Font MI, Crosslin JM, Munyaneza JE (2012) A new haplotype of ‘Candidatus Liberibacter solanacearum’ identified in the Mediterranean region. European Journal of Plant Pathology 135(4), 633-639.