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Beth Purse beth@ceh.ac.ukWP3 Team: Dan Chapman, Louise Barwell, Ana Perez-Sierra,
Beatrice Henricot, Mariella Marzano, Michael Dunn
Work package 3Ranking global Phytophthora threats by
understanding pathways, niches and traits
WP3 Team
Beatrice Henricot
PATHOGEN TRAITS, EPIDEMIOLOGY AND OCCURRENCE DATA
Mariella Marzano
Mike Dunn
SCOPING KNOWLEDGE GAPS TOURISM, TRADE &
BIOSECURITY
Beth Purse
Dan Chapman Louise Barwell
RISK MODELSOCCURRENCE
DATA
Ana Perez-Sierra
Exotic pathogens introduced at an increasing rate
Proportion of pathogen records from French Plant Health Service that are exotic
• High impact, hard to predict• unknown ecology in invaded range
P. austrocedri on juniper
P. kernoviae on Rhododendron, beech, Vaccinium
Knowledge gaps for horizon scanning and mitigation
From where?Which pathways?
Which species………………………….?
IMPACT
Learning from past patterns in invasion and impacts
Agricultural trade flows into Europe
Learning from past patterns in invasion and impacts
Disturbance? Hosts? Forestry systems? Water availability? Soil?
Global niche of Phytophthora cinnamomi – match past occurrence and past climate
Link ecological traits to invasion patterns and impacts
Dispersal Climatic tolerance
Oospore
Chlamydospore
Persistence Host range
P. kernoviae on Rhododendron, beech, Vaccinium
• 169 species (so far)• Complete for ~ 90 species
Phytophthora trait database
Focal Phytophthora species to model• 10-15 species already present in the UK (validate approach)
• 25-30 species outside Europe that pose threats
• E.g. Species listed on the UK Plant Health Risk RegisterSpecies here already Species yet to arrive• P. alni P. acerina • P. austrocedri P. pinifolia• P. foliorum P. pluvialis • P. fragariae P. polonica• P. infestans• P. kernoviae• P. lateralis• P. pseudosyringae• P. ramorum• P. rubi• P. siskiyouensis
Key outcomes
• Inform risk register & pest risk assessments• UK maps of risk areas per species: target mitigation• Understand invasion process and links to traits
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