ABSTRACT
The term ‘mycorrhiza’ describes the symbiotic association of plant roots with hyphal fungi. As about 90% of the land plants belong to families that are commonly mycorrhizal (Molina et al., 1992), mycorrhiza formation is rather the rule than an exception. Therefore, mycorrhizas can be regarded as ‘the chief organs involved in nutrient uptake of most land plants’ (Harley and Smith, 1983).
