Xylella fastidiosa warnings updated

APHA to undertake official surveys for Xylella fastidiosa, health body says.

APHA shall be conducting official surveys for X. fastidiosa and the PHSI will be working with businesses to be registered and authorised to comply with the new plant passporting requirements, which require that movements of all ‘host plants’ across the EU must be accompanied by a plant passport, down to the retail sale stage. 

To help industry understand the implications, FERA have produced a plant health guidance document ‘X. fastidiosa implications for the nursery trade’ at www.gov.uk/guidance/protecting-plant-health-topical-issues

Host plants that must now be plant passported are at http://ec.europa.eu/food/plant/docs/ph_biosec_legis_emergency_db-host-plants_en.pdf

The new EU Decision 2015/2417 came in and took effect on 17 December 2015 and it amended Emergency Decision (2015/789/EU) which sets out measures to detect X. fastidiosa and to take certain actions in response to findings.

Details on the disease are available in the Defra fact sheet at https://secure.fera.defra.gov.uk/phiw/riskRegister/plant-health/documents/notifiable_diseases/xylellaFastidiosa2015.pdf

List of ‘host plants’ as of 3 February 2016 (latest from EU)

Xylella fastidiosa subsp. Multiplex

Acer pseudoplatanus
Artemisia arborescens
Asparagus acutifolius

Cistus monspeliensis
Cistus salviifolius
Coronilla valentina

Genista x spachiana (syn. Cytisus racemosus)
Genista ephedroides
Hebe species
Lavandula angustifolia
Lavandula dentata
Lavandula stoechas

Myrtus communis
Pelargonium graveolens
Polygala myrtifolia
Prunus cerasifera
Quercus suber
Rosa floribunda

Rosmarinus officinalis
Spartium junceum

Host plants found to be susceptible to several subspecies of Xylella fastidiosa

Coffea species

Xylella fastidiosa subsp. pauca

Acacia saligna
Asparagus acutifolius
Catharanthus species
Cistus creticus
Dodonaea viscosa
Euphorbia terracina
Grevillea juniperina
Laurus nobilis
Lavandula angustifolia
Myoporum insulare
Myrtus communis
Nerium oleander
Olea europaea
Polygala myrtifolia
Prunus avium
Prunus dulcis
Rhamnus alaternus
Rosmarinus officinalis
Spartium junceum
Vinca species
Westringia fruticosa
Westringia glabra

Next steps - APHA advice:

  • Talk to your local Plant Health inspector about X. fastidiosa and if any changes are needed to your plant passport authorisation in the coming months
  • Check the genera you grow to see if they are in the above list
  • Familiarise yourself with X. fastidiosa, use the fact sheet as a guide to check your plants for 

Defra have applied to the EU Commission for four new protected zones to help safeguard the UK.

1. Bacterial shothole of Prunus (Xanthomonas arboricola pv pruni)

2. Elm Yellows Phytoplasma (Candidatus Phytoplasma ulmi)

3. Palm borer (Paysandisia archon)

4. Pine Processionary Moth (Thaumetopoea pitycampa)

More details can be found on the Forestry Commission website.

Picture courtesy INRA of Thaumetopoea pityocampa larval nest © IZRF INRA Orleans

All these cases will be assessed by the EU Commission to determine if the UK can be granted PZ status.

Certain temporary Protection Zones (on oak processionary moth, plane wilt and oriental chestnut gall wasp) expire in April 2016 and a review is underway at EU level about their continuation.

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