Transgenic Betula pendula expressing sugarbeet chitinase IV forms normal ectomycorrhizae with paxillus involtus in vitro - Pasonen, H-L.; Degefu, Y.; Brumos, J.; Lohtander, K-L.; Pappinen, A.; Timonen, S.; Seppänen, S-K. (Taylor & Francis, 2005)