Article

European Journal of Plant Pathology

, 122:561

First online:

Pectobacterium carotovorum subsp. carotovorum can cause potato blackleg in temperate climates

  • Eisse G. de HaanAffiliated withDutch General Inspection Service for Agricultural seed and seed potatoes (NAK)
  • , Toos C. E. M. Dekker-NoorenAffiliated withDutch General Inspection Service for Agricultural seed and seed potatoes (NAK)
  • , Gé W. van den BovenkampAffiliated withDutch General Inspection Service for Agricultural seed and seed potatoes (NAK)
  • , Arjen G. C. L. SpeksnijderAffiliated withPlant Research International
  • , Patricia S. van der ZouwenAffiliated withPlant Research International
  • , Jan M. van der WolfAffiliated withPlant Research International Email author 

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Abstract

It is well established that the pectinolytic bacteria Pectobacterium atrosepticum (Pca) and Dickeya spp. are causal organisms of blackleg in potato. In temperate climates, the role of Pectobacterium carotovorum subsp. carotovorum (Pcc) in potato blackleg, however, is unclear. In different western and central European countries plants are frequently found with blackleg from which only Pcc can be isolated, but not Pca or Dickeya spp. Nevertheless, tubers vacuum-infiltrated with Pcc strains have so far never yielded blackleg-diseased plants in field experiments in temperate climates. In this study, it is shown that potato tubers, vacuum-infiltrated with a subgroup of Pcc strains isolated in Europe, and planted in two different soil types, can result in up to 50% blackleg diseased plants.

Keywords

Erwinia carotovora subsp. carotovora Pathogenicity PCR-amplification Symptom expression Vacuum infiltration