'Candidatus Phytoplasma ulmi'(PHYPUL)
Distribution details in Serbia
Current pest situation evaluated by EPPO on the basis of information dated
2025: Present, restricted distribution
Pest status declared by NPPO: Present, not widely distributed and not under official control (2025-09)
Pest status declared by NPPO: Present, not widely distributed and not under official control (2025-09)
Although 'elm yellows' observed in North America and Europe present different symptoms and disease severity, the phytoplasmas associated with them are very closely related (if not belonging to the same species).
EPPO Reporting Service (2009/217) : in September 2007, mild leaf yellowing symptoms were observed on 18 elm trees near the villages of Srednjevo, Ljubičevo and Šuvajić (north-east Serbia). Molecular tests confirmed the presence of ‘Ca. Phytoplasma ulmi’ in samples of U. minor (from Srednjevo and Ljubičevo) and in samples of U. laevis (from Šuvajić).
NPPO (2025): present in elm forests but does not cause permanent damage to trees.
EPPO Reporting Service (2009/217) : in September 2007, mild leaf yellowing symptoms were observed on 18 elm trees near the villages of Srednjevo, Ljubičevo and Šuvajić (north-east Serbia). Molecular tests confirmed the presence of ‘Ca. Phytoplasma ulmi’ in samples of U. minor (from Srednjevo and Ljubičevo) and in samples of U. laevis (from Šuvajić).
NPPO (2025): present in elm forests but does not cause permanent damage to trees.
* Jović J, Cvrković T, Mitrović M, Petrović A, Krstić O, Krnjajić S, Toševski I (2011) Multigene sequence data and genetic diversity among 'Candidatus Phytoplasma ulmi' infecting Ulmus minor and Ulmus spp. in Serbia. Plant Pathology 60(2), 356-368.
------- High diversity of EY phytoplasmas in elms trees in Serbia (as in France and Czech Republic) might suggest that 'Ca. P. ulmi' originates from Europe.
* Jović J, Cvrković T, Mitrović M, Petrović A, Krnjajić S, Toševski I (2008) New strain of 'Candidatus Phytoplasma ulmi' infecting Ulmus minor and Ulmus laevis in Serbia. Plant Pathology 57(6), p 1174.
* NPPO of Serbia (2025-09).
------- High diversity of EY phytoplasmas in elms trees in Serbia (as in France and Czech Republic) might suggest that 'Ca. P. ulmi' originates from Europe.
* Jović J, Cvrković T, Mitrović M, Petrović A, Krnjajić S, Toševski I (2008) New strain of 'Candidatus Phytoplasma ulmi' infecting Ulmus minor and Ulmus laevis in Serbia. Plant Pathology 57(6), p 1174.
* NPPO of Serbia (2025-09).
| Country | State | Status | |
|---|---|---|---|
| Croatia | Present, widespread |