Mycorrhizal research has grown by leaps and bounds in the past few decades. These fungi promise to promote plant growth, maintain plant and soil health, assist in bio-protection against root diseases, encourage production with reduced fertilizer and pesticides, allow for nutrient acquisition, affect soil skeletal structure holding primary soil particles together, are conductive to the formation of microaggregate structures and higher rhizosphere populations, enable symbiosis that alters host water relations, as well as alter root length and architecture. These fungi also help with the re-vegetation of landscapes, golf courses or contaminated soils. They assist with the biological hardening of tissue culture raised plants, postpone leaf dehydration, draught responses, osmo-protecting enzymes and enhance P acquisition. AM symbiosis could conceivably affect any of these steps. AMF should be considered as an alternative to costly soil disinfection. The mechanisms by which fungi induce resistance in their hosts and enhance disease resistance need critical evaluation and examination. Editors see this volume as a tremendously valuable collection of specialized up-date chapters describing the most sophisticated and modern protocols in mycorrhizal research, thoroughly explained and synthesized.