Changes of mycorrhizal colonization along moist gradient in a vineyard of Eger (Hungary)

The role of mycorrhizal fungi has special importance in the case of low soil moisture because the colonization of vine roots by mycorrhiza increases water and n utrient uptake and thus aids the avoidance of biotic and abiotic stresses of grape. Our aim was to investigate in the Eger wine region the changes of mycorrhizal colonizatio n, water potential, and yield quality and quantity of grape roots at three altitude s, along a changing soil moist gradient. Our results show that the degree of mycorrhizal c olonization is higher in drier areas, which supports the water and nutrient uptake of the host plant.