Fig.1

Colonial morphology and microscopic structure of the strain ZC2-1, ZA-1, ZB-1 and ZC-9. a–d colonial morphology of ZC2-1, ZA-1, ZB-1 and ZC-9. e–h microscopic structure of ZC2-1, ZA-1, ZB-1 and ZC-9 observed by microscope with 1000 folds amplification