[Background]The key to promoting green agriculture is microbial fertilizer.Siderophore is a low molecular iron chelate produced by rhizosphere microorganisms,which can promote plant growth by chelating Fe3+.Therefore,it is of great significance to screen out the strains with high-yield siderophore.[Objective]In order to provide germplasm resources for the development of plant growth-promoting bacteria,we isolated high-yielding siderophore microorganisms from rhizosphere soil.[Methods]A fungal strain with high yield of siderophore was isolated a...