Assessment of native arbuscular mycorrhizal fungi assemblages under different regimes of crop rotation

Abstract

Given the potential benefits of arbuscular mycorrhizal fungi (AMF) to agricultural productivity, the impact of agricultural practices on the AMF communities has been aim of an increasing number of studies. Using molecular markers on the large subunit rDNA, we investigated the influence of different long-term crop rotations on the structure and composition of the indigenous AMF community, at the experimental field in Martonvásár, Hungary. Only phylotypes belonging to the family Glomeraceae were detected. Comparing the root and soil AMF assemblages no significant correlations were found between the rotation systems and the composition of the communities. However the analysis of the diversity and the net relatedness index suggested an influence of the number and identity of the crops in rotation on the structure of the AMF communities.