Fig. 2.

Neighbor-joining phylogenetic analysis of arbuscular mycorrhizal fungal 5.8S-ITS2 rDNA sequences obtained from onion root samples in the Netherlands for Glomus-A (as defined by Schwarzott et al. 2001) phylotypes, rooted to Paraglomus brasilianum sequence AJO12112. The scale represents substitutions per site. Sequences obtained in the present study are shown in boldface. Sequences from databases isolated from roots were labeled with the accession number, host plant, and country of origin, whereas those isolated from spores, with fungal species and accession number. Bootstrap values from 1,000 replications larger than 50% are indicated above branches. Brackets to the right indicate phylotypes defined for the sequences obtained in this study