compounds, mainly heptelidic acid and rugulosine (Azevedo 2000; Sumarah et al. 2008). Nodulisporic acid, benzofuran derivates and naphthalene are also insectisidal subtances produced by endophytic fungi (Sumarah and Miller 2009). Possible mechanism other than toxin production is the change of plant metabolism such as sterol metabolism which not favors the insects (Azevedo 2000). The exact mechanism and the type of toxin associated with the increasing chili resistance against A. gossypii mediated by fungal endophyte need further investigation. G