An exploration of unseen fungal world and analysis of their functional attributes in crop and human healthFungal endophytes are a group of microbial entities that live in either apoplast or symplast region of healthy plant tissues without causing any detectable symptoms of disease to the concerned host. Since they derive nutrients and shelter from their host hence, in turn, provide protection to their host against various biotic and abiotic stresses. Because of country's diverse and distinctive plants diversity, coordinated efforts at front of endophytic diversity research and exploitation are required in light of their vast applicability in plant and human health and the environment. This article focuses on endophytic biodiversity, their role to protect plants against abiotic environmental stresses with special reference to drought, heat and dyes degradation. It will also cover the epigenetic modulations for cryptic bioactive compounds; endophytes mediated fabrication of metal nanoprticles (NPs), and mycomediated synthesis of carbon nano dots (CNDs) and their utilization in plant health promotion.