Xylella: host plant database updated

EFSA has completed two pieces of work that substantially expand knowledge and understanding of Xylella fastidiosa, the plant pathogen Organism (e.g. bacterium, virus and parasite) that can cause disease. that is attacking fruit trees and other plants in parts of Europe.

The agency has published the latest update of its database of plants that act as hosts for X. fastidiosa.The updated list includes 563 plant species A subdivision of the genus, a species is a group of closely related and similar-looking organisms; for example, in the case of Homo sapiens (humans), the second part of the name (sapiens) represents the species. identified through a new literature search and from notifications to the EU’s plant health interception service EUROPHYT. For 312 of the species, infection has been identified by at least two detection methods.

The list now covers both species of the pathogen – X. fastidiosa and X. taiwanensis – andincludes information on plant varieties that are resistant to, or tolerant of, Xylella.

The database provides essential evidence to scientists and risk assessors and supports risk managers in carrying out surveillance and other phytosanitary measures, such as inspections of plants for planting.

EFSA’s Panel on Plant Health has also updated its pest categorisation of X. fastidiosa, which was part of its risk assessment of the pathogen published in 2015.

The update includes the latest information on the biology and distribution of X. fastidiosa inside and outside the EU, as well on the presence and distribution of insect vectors in Europe. It also includes detailed information about the European outbreaks and the plant species affected. 

A new full risk assessment  A specialised field of applied science that involves reviewing scientific data and studies in order to evaluate risks associated with certain hazards. It involves four steps: hazard identification, hazard characterisation, exposure assessment and risk characterisation. of X. fastidiosa is scheduled for completion in early 2019.

• Update of the Xylella spp. host plant database
• Updated Xylella fastidiosa pest categorisation