[1] Univ British Columbia, Michael Smith Labs, Vancouver, BC V6T 1Z4, Canada
[2] Univ British Columbia, Grad Program Genet, Vancouver, BC V6T 1Z3, Canada
[3] Natl Inst Biol Sci, Beijing 102206, Peoples R China
[4] Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada
[5] Max Planck Inst Plant Breeding Res, Dept Plant Microbe Interact, D-50829 Cologne, Germany
[6] Brock Univ, Dept Biol Sci, St Catharines, ON L2S 3A1, Canada