1 Department of Microbiology & Immunology, Faculty of Science, 1365 - 2350 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3, Canada.. Electronic address: cara.haney@ubc.ca.
2 Department of Molecular Microbiology, John Innes Centre, Norwich Research Park, Colney Lane, Norwich NR4 7UH, United Kingdom. Electronic address: jacob.malone@jic.ac.uk.