[1] McMaster Univ, Ctr Environm Genom, Dept Biol, Hamilton, ON L8S 4K1, Canada
[2] Univ Minnesota, Inst Biotechnol, Dept Soil Water & Climate, St Paul, MN 55108 USA
[3] Univ Minnesota, Plant Genom Inst, Dept Soil Water & Climate, St Paul, MN 55108 USA