Pseudomonas syringae pv. actinidiae does not occur in Argentina
In 2018, a research study reported that Pseudomonas syringae pv. actinidiae (EPPO A2 List) was detected for the first time in Argentina, in pollen of Actinidia deliciosa cv. Chieftain (EPPO RS 2018/012). The tested pollen had been collected in February 2015 in the area of Mar del Plata, in the province of Buenos Aires.
The NPPO of Argentina recently informed the EPPO Secretariat that this record should now be considered as invalid. They noted that the study had been conducted by a team of Italian researchers in the absence of any Argentinian partners, and that information about the exact location from which the pollen had been sampled could not be obtained from the authors. In addition, the identification method used has later been shown to give false positive results due to cross-reactions with other Pseudomonas species. Furthermore, as P. syringae pv. actinidiae is a regulated pest in Argentina, the NPPO has conducted specific surveys since 2013, which have not detected the bacterium. Several Argentinian research groups have also conducted studies in orchards in different kiwifruit-growing areas, including the Mar del Plata area, which did not detect P. syringae pv. actinidiae.
The pest status of Pseudomonas syringae pv. actinidiae in Argentina is officially declared as: Absent, unreliable record.
Sources
NPPO of Argentina (2024-11).
Balestra GM, Buriani G, Cellini A, Donati I, Mazzaglia A, Spinelli F (2018) First report of Pseudomonas syringae pv. actinidiae on kiwifruit pollen from Argentina. Plant Disease 102(1), p 237. https://doi.org/10.1094/PDIS-04-17-0510-PDN
Sánchez MC, Clemente GE, Yommi, AK, Alippi AM, Ridao A del C (2018) Absence of Pseudomonas syringae pv. actinidiae in kiwifruit leaves and flowers from Buenos Aires Province, Argentina. Acta Horticulturae 1218, 351-358. https://doi.org/10.17660/ActaHortic.2018.1218.49