results may suggest that,
apart from the production of antimicrobial substances by strain SG-6,
nutrient competition or site exclusion is perhaps another mode of action.
These results are consistent with other experiments where endophytes from other hosts colonized new host tissues and subsequently reduced disease .
For harvested fruit, the diseases caused by fungi usually begin as a result of wound infections.
Being a bacterium isolated as an endophyte from S. tonkinensis, strain SG-6 was well adapted to the wound environment in citrus fruit and has considerable potential as a biocontrol agent.