Endophytic fungi are found on all kinds of plants, i.e. trees, grasses, algae and herbaceous plants. Endophytic fungi live within a plant’s tissue without causing any symptoms or apparent injury to the host. The colonisation of plant tissues by endophytic fungi occurs in a manner similar to those of plant pathogens and mycorrhizae [1]. Colonisation comprises a sequence of steps involving host recognition by the fungus, spore germination, penetration of the epidermis, and tissue colonisation.