Endophytes are known to affect the interactions of plants with their environment, and to alter the course of their interactions with plant pathogens. In spite of this, fungal endophytes are still quite inconspicuous in plant pathology textbooks. This is likely to change soon. In addition to represent a source of organisms for disease control and plant improvement, the study of endophytes may have an important influence in the
conceptual framework where plant-pathogen interactions are interpreted and investigated