Honeybees are beneficial insects and very important economically as well as ecologically. But can these be vector to different plant pathogens during nectar feeding or pollen collection?
Erwinia amylovora, pathogen of fire blight may be such a pathogen. According to some papers honeybees can be carriers of live bacterial cells of E. amylovora for 48 hours.
But according to Pattemore et al., (2014) P. syringae , a pathogen of kiwifruit was detected live 6 days after the bees were inoculated and similarly P. syringae, a pathogen with a wide host range, was detected on bees after 9 days later. Their results demonstrated that P. syringae can survive in beehives and spread within a hive, and supports the recommendations for a stand down period before moving beehives from a contaminated to a non-contaminated orchard.