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