Nutrient uptake by hyphae of arbuscular mycorrhizal fungi and strategies to exploit this uptake capacity in agricultural systems

摘要

Colonization of plant roots by arbuscular mycorrhizal fungi (AMF) modifies plant activity and can greatly increase the plant uptake of mineral nutrients. This colonization may also protect plants from harmful elements in soil. Much experimental evidence shows that the contribution of arbuscular mycorrhizal fungi to plant nutrient uptake is mainly due to the acquisition of nutrients by the extraradical mycorrhizal hyphae. We have studied both the molecular basis for the interaction between AMF and their host plants and the potential of hyphae for nutrient uptake. The results of these studies are used to discuss possible improvements in the exploitation of AMF in practical agriculture.