Institution: | a Laurentian Forestry Centre, Canadian Forest Service, Natural Resources Canada, 1055 du PEPS, Quebec City, Quebec, Canada b Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, 1219 Queen St. East, Sault Ste Marie, Ontario, Canada c Department of Molecular and Cellular Biology, University of Guelph, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada |