Brown spot needle blight is one of the important
pine diseases in south China.MS liquid medium was selected as the most suitable medium
producing brown spot needle blight fungus toxin(LA toxin)by comparing with several other
culture media.The fungus could produce a large amount of the toxin when it was cultured in MS
liquid medium for 20 days.It is not evidently affected on the toxin production amount if the
culturing fungus has produced the spores.The ...