3. Results3.1 Isolation of endophyt

3. Results
3.1 Isolation of endophytic bacteria
Seventy-one isolates of endophytic bacteria were isolated from three parts of rice tissue (root, lower
stem and higher stem) using PDA and TSA medium. Rice tissue samples were collected from different
three types of rice farm; 1 year, 3 years organic rice farms, and conventional rice farm in Udon Thani,
Thailand. The serial dilutions of macerated rice samples were spreaded on TSA and PDA medium. The
colony forming units (CFU) were determined after appropriate inoculation at 30