Symbiosis-stimulated chitinase isoenzymes of soybean (Glycine max [L.] Merr.). - Xie, ,Z..P.,.; Staehelin, ,C.,.; Wiemken, ,A.,.; Broughton, ,W..J.,.; Müller, ,J.,.; and Boller, ,T.. (J. Exp. Bot., 1999)