Risk assessment of the entry of Pantoea stewartii subsp. stewartii on maize seed imported by the EU from the USA.

ABSTRACT: Following a request from the European Commission, the EFSA Panel on Plant Health performed a risk assessment of the entry of Pantoea stewartii subsp. stewartii on maize seed imported by the EU from the USA. This pest is a Gram-negative bacterium which causes Stewart's vascular wilt and leaf blight of maize (including sweet corn), a disease responsible for serious crop losses throughout the world. The following scenarios were considered: scenario A0 (current practice), scenario A1 (US request for modification of EU conditions for derogation), and scenario A2 (EU conditions for derogation). Results from the quantitative seed pathway model presented here show that, despite the low rates of plant-to-seed and seed-to-seedling transmission that have been reported in the literature for Stewart's

SUBMITTER: EFSA Panel on Plant Health (PLH) 

PROVIDER: S-EPMC7008921 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature