Fig. 6.

Phylogenetic tree of sequences obtained in this study from the date palms in the oasis plantation (OA) in 2006 and the experimental station (ES) in 2004 and 2006 and sequences from public databases. Sequences obtained in the present study are shown in boldface and are labeled with the database accession number (e.g., GQ406077), the plantation (e.g., oasis OA), the root sample replicate (e.g., 1), RFLP pattern (e.g., A), and the sampling year. The tree was obtained by neighbor-joining analysis of 308 characters from the 18S rDNA. The numbers above the branches are neighbor-joining bootstrap values from 1,000 replications. The tree was rooted using Paraglomus occultum. Note: S. castanea, S. gregaria, and S. fulgida were all recently renamed R. castanea, R. gregaria, and R. fulgida, respectively (Oehl et al. 2008); Kuklospora colombiana is the former Entrophospora colombiana (Sieverding and Oehl 2006); Ambispora appendicula is the former Archaeospora leptoticha (Spain et al. 2006; Walker 2008)