The root endophytic fungus _Piriformospora indica _has been shown to increase resistance against abiotic salinity stress in some crop plants: _Vicia faba_, _Lupinus termis_, _Arachis_ _hypogaea _and _Hibiscus sabdariffa_. The presence of the fungus reduced the effect of the salinity on the growth rate; and enhanced the photosynthetic processes and protein contents. Moreover, water relations were improved under the effect ... Read more