Abstract:
Endophytic fungi were isolated from 340 samples leaf of 9 Dipterocarp forest tree species such as Shorea obtuse, Shorea siamensis, Careya sphaerica, Morinda pubescens, Anthocephalus chinensis, Grewia criocarpa, Terminalia chebula, Fermandoa adenophylla, Erythrina variegate in Tak province during wet season 2007 and dry season 2008. Total 231 endophytic fungi isolates were obtained and identification based on morphological characteristic. Biodiversity of endophytic fungi were greater in wet season than dry season. Mycelia sterilia sp.2 was the most frequency isolated from all different plant host species. Moreover, the typical endophytic fungi genera such as Phomopsis sp., Nigrospora sp., Pestalothiopsis sp. and Xylaria sp. were commonly found in this area. DSO2 was one isolate showed broad spectrum antimicrobial against Pseudomonas aeruginosa ATCC9027 Escherichia coli ATCC25922 Bacillus subtilis ATCC6633 Staphylococcus aureus ATCC25923 Candida albicans ATCC 70014. A anticancer activity against seven human cell lines and non cancer kidney African green monkey (Vero) cell lines by using MTT assay. WAC9 and WGE2 were activitied against human acute T-cell leukemia and human colorectal adenocarcinoma respectively. Both strain were then identified as Glomerella cingutala and Phomopsis sp. by molecular technique. Strain WAC9 showed apoptosis character.