title: Soil biocrust metagenome: sample Pat4, 16S-ITS-23S rDNA
design: The total DNA was isolated using the DNeasy PowerSoil Kit. Primer pair 16S1515F (5'AGTCGTAACAAGGTAGCCGTACC3')  B23SR (5'CTTCGCCTCTGTGTGCCTAGG3') was used.