Journal of Plant Diseases and Protection

, Volume 126, Issue 1, pp 89–92 | Cite as

Candidatus Liberibacter solanacearum’ detected in Trioza urticae using suction trap-based monitoring of psyllids in Germany

  • M. Jennifer Sjolund
  • Yvonne M. Arnsdorf
  • Mairi Carnegie
  • Eva Fornefeld
  • Torsten WillEmail author
Short Communication


Psyllids are small, phloem-feeding insects. Several species are vectors of economically important pathogens, such as ‘Candidatus Liberibacter solanacearum’ (CLso) and phytoplasmas. We monitored the psyllid population in Quedlinburg, Germany, using a 12.2-m suction trap from May to September 2017 in order to detect potential vectors for CLso, a pathogen of apiaceous and solanaceous crops. CLso has been previously detected in Germany in the carrot psyllid, Trioza apicalis. Psyllids were identified using a combination of morphological and molecular methods, and samples of each species were tested for CLso. No known vectors of CLso were captured. However, we detected CLso of unknown haplotype in a single individual of Trioza urticae, which mainly feeds on Urtica spp. A so-called haplotype U was recently described in Finland and was associated with Trioza urticae and Urtica dioica. This is the first report of CLso in T. urticae in Germany.


Psyllid Sternorrhyncha Candidatus Liberibacter solanacearum CLso Vector Suction trap 



This work has been financially supported by European Union Horizon 2020 research and innovation programme under grant agreement No. 635646: POnTE (Pest Organisms Threatening Europe). We thank Kerstin Welzel for processing suction trap collections.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Deutsche Phytomedizinische Gesellschaft 2018

Authors and Affiliations

  • M. Jennifer Sjolund
    • 1
  • Yvonne M. Arnsdorf
    • 1
  • Mairi Carnegie
    • 1
  • Eva Fornefeld
    • 2
  • Torsten Will
    • 3
    Email author
  1. 1.Science and Advice for Scottish Agriculture (SASA)EdinburghUK
  2. 2.Institute for National and International Plant HealthJulius Kuehn-Institute (JKI)BraunschweigGermany
  3. 3.Institute for Resistance Research and Stress ToleranceJulius Kuehn-Institute (JKI)QuedlinburgGermany

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