The 4th meeting of the International Phytoplasmologist Working Group is going to be held in Valencia, Spain on September 8-12, 2019.
Check the online program here.
Arms Race - evolution of plant pathogens and their hosts
2-3 September 2019
Bristol UK
https://www.bspp.org.uk/conferences/arms-race-evolution-of-plant-pathogens-and-their-hosts/