Serendiptia indica was formerly known as Piriformaspora indica. It is a fungus which is endophytic but culturable on laboratory media. Rather than an affinity to arbuscular mycorrhizae it is aligned with basidiomycete asexual stage. It is known to increase the drought salt and temperature tolerance in plants which are colonized by it. There is information that the plant metabolism is stimulated so diseases and pests are not as susceptible. These broad benefits include better growth and higher nutrient contents.
The Wikipedia Piriformapora indica will be a good start of a review and then google scholar in the last 5 years would give a good review.
Serendipita indica (= Piriformospora indica) is widely distributed as a symptomless root endophyte, and it colonizes members of bryophytes, pteridophytes, gymnosperms and angiosperms. Root colonization by this fungus results in an increase in plant growth, early flowering, higher seed yield, alteration in the secondary metabolites, and adaptation to abiotic and biotic stresses. Moreover, Serendipita indica is shown to have enormous bioprotective potential against plant pathogens and insect pests of agricultural and horticultural crops. Please see the following RG links for more details.
The fungus is reported to increase plant growth resulting in an increase in yield. It also control phytopathogens by secreting different toxic compounds and by colonization.
Serendipta indica is a culturable endophyte that colonies root system .many literatures indicate that S.indica has many activities such as plant growth promoter, bi-fertilizer,bioherbicide ,immune modulator, etc.