Endophytes are those microorganisms that inhabit interior of plants especially leaves, stems,
roots shows no apparent harm to host [1]. Almost all classes of vascular plants and grasses
examined to date are found to host endophytic organisms [2]. Different groups of organisms such
as fungi, bacteria, actinomycetes and mycoplasma are reported as endophytes of plants [3]. The
existence of endophytes has been known for over one hundred years. In literal translation, the
word endophyte is derived from Greek, ‘endo’ >< ‘endon’ meaning within, and ‘phyte’><
‘phyton’ meaning plant. Research of endophytic fungi has a long history and their diversity
among plants has been found to be considerably large. Each plant has been reported to harbor
one or more endophytes [4, 5] (Figure 1). Recently endophytes are viewed as outstanding source
of secondary metabolites bioactive antimicrobial natural products. These microorganisms
received considerable attention in last 20 years when their capacity to protect against insect and
pest pathogens was noticed [1]. Botanists have carried out much research into the plant