Study on the antifungal activityof endophyticfungi from Kobresia capillifolia

Seven endophytic fungi were isolated from Kobresia capillifolia （Decne.）, three of them belong to Fusarium sp., one belongs to Acremonium sp., one belongs to Periconia sp., and the remaining two strains didnt bear spores, and can not be identified by morphological methods. The seven strains were measured of their colony growth rate. Moreover, their antifungal activities to 4 different plant pathogens including Rhizoctonia solani(R1), Bipolaris sorokiniana (B1), Pythium ultimum (P1)and Fusarium oxysporium (F1) were tested. The results showed that 71.43% of the strains have good characteristics of living in lowtemperature environment; Four of them had strong inhibition on B. sorokiniana, the strain SY3 had the strongest inhibition on B. sorokiniana, its inhibitory rate was over 61.84% and it's inhibition area was beyond 10 mm; Four of them had weak inhibition on R. solani, their inhibitory rate were low, and inhibition areas were not obvious; The inhibition on F. oxysporium was pretty week, inhibition areas were not obvious; Only one strain had strong inhibition on P. ultimum, whose inhibitory rate was 13.75%, and the inhibition area was 5 to 10 mm.