Secondary metabolites of endophytic Guignardia mangiferae from Smilax glabra and their antitumor activities Identification and biological characterization of the pathogen causing a new black spot disease on Musa spp. Distribution and Transmission of Endophytic Guignardia mangiferae Isolated from Tea Plant, Camellia sinensis Secondary metabolites of endophytic Guignardia mangiferae from Smilax glabra and their antitumor activities