A phytoplasma survey reveals the presence of ‘Candidatus Phytoplasma fragariae’ in Ulmus spp. and Acer pseudoplatanus in Belgium

Author:

De Jonghe Kris1ORCID,Goedefroit Thomas1,Deeren Anne‐Marie1,Fauche Frédéric2,Steyer Stéphan2ORCID

Affiliation:

1. Plant Sciences Unit Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) Merelbeke Belgium

2. Department of Life Sciences Walloon Agricultural Research Center (CRA‐W) Gembloux Belgium

Abstract

AbstractA Belgium‐wide survey to determine the presence of ‘Candidatus Phytoplasma ulmi’ elm trees was performed on nearly 600 elm trees. The randomly sampled elms were screened for the presence of phytoplasmas using a standard generic nested PCR method. In five symptomless elm trees, phytoplasmas were detected. Multiple gene sequence analysis (16S rRNA, tuf, rplV‐rpsC‐rplP), virtual RFLP of the 16S rRNA gene fragment and phylogenetic analysis showed that the phytoplasma strains detected in all five elm trees could be classified into the 16SrXII‐E subgroup (‘Candidatus Phytoplasma fragariae’‐related phytoplasma). In addition, a maple tree (Acer pseudoplatanus) located in close proximity to one of these elm trees was also determined to be infected with ‘Ca. P. fragariae’. Ulmus and Acer are new host plant genera for this phytoplasma. Further studies are needed to elucidate the epidemiological impact of these findings.

Publisher

Wiley

Subject

Ecology,Forestry

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