2020/01/01 by EFSA Panel on Plant Health (PLH), Claude Bragard, Katharina Dehnen‐Schmutz +22 · 1 citation
Agricultural and Biological Sciences · #Phytoplasmas and Hemiptera pathogens #Research on scale insects #Cocoa and Sweet Potato Agronomy
paper · pdf · doi:10.2903/j.efsa.2020.5929
openalex publication_date 2020/01/01 · openalex created_date 2020/01/23 · openalex updated_date 2026/07/23
. P. pyri', and (iii) an unclassified phytoplasma causing Buckland valley grapevine yellows. Phytoplasmas can be detected by available methods and are efficiently transmitted by vegetative propagation, with plants for planting acting as a major entry pathway and a long-distance spread mechanism. Phytoplasmas are also transmitted in a persistent and propagative manner by some insect families of the Fulgoromorpha, Cicadomorpha and Sternorrhyncha (order Hemiptera). No transovarial, pollen or seed transmission has been reported. The natural host range of the categorised phytoplasmas varies from one to more than 90 plant species, thus increasing the possible entry pathways. The host plants are widely cultivated in the EU. All the categorised phytoplasmas can enter and spread through the trade of host plants for planting, and by vectors. Establishment of these phytoplasmas is not expected to be limited by EU environmental conditions. The introduction of these phytoplasmas in the EU would have an economic impact. There are measures to reduce the risk of entry, establishment, spread and impact. Uncertainties result from limited information on distribution, biology and epidemiology. All the phytoplasmas categorised here meet the criteria evaluated by EFSA to qualify as potential Union quarantine pests, and they do not qualify as potential regulated non-quarantine pests, because they are non-EU phytoplasmas.