Plant Pathology (2006) 55, p. 293 (Kaminska et al.)

M. Kaminska and H. Sliwa (2006)
First report of a decline of ashleaf maple (Acer negundo) in Poland, associated with `Candidatus Phytoplasma asteris'
Plant Pathology 55 (2), 293-293
Abstract: At several sites in Poland ashleaf maple (Acer negundo) were observed with reduced apical growth, severe leaf malformation, necrosis, witches' broom and dieback of twigs and branches. Trees died within a few years of the onset of symptoms. Chip-grafting from affected A. negundo hybrids to healthy Catharanthus roseus resulted in symptomatic plants. Analyses of nucleic acid extracts by nested PCR was done using the universal phytoplasma rDNA primer pair P1/P7, followed by primers fA/rA, R16F2n/R16R2 or the phytoplasma rRNA 16SrI group-specific primers R16(I)F1/R16(R1)R1. RFLP analysis of the PCR products indicated that the bands were amplified from phytoplasmas belonging to the 16SrI group - subgroup B. In Poland, 16SrI-B subgroup strains (´Candidatus Phytoplasma asteris) affect several ornamental crops including magnolia and rose.
(The abstract has been supplied by the author or ISPI and is excluded from the Creative Commons licence.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytoplasma asteris	Maple (Acer)	Poland