TABLE 2.

Oligonucleotides used for making probes

Gene and orientation	Sequence (5′ → 3′)
arsA forward	ATGACTGCTACACAAACGCC
arsA reverse	TCACGACACCGTCACCTCCT
arsD forward	ATGACTCAACTCACCCTGTA
arsD reverse	TTACGCTTCCTGTGGGTCTG
arsR forward	ATGTCATCGACCGAGCGGTT
arsR reverse	TCATCTGCGGGATCCGTTCA
arsC forward	ATGTCTGCTGATTCGACGAC
arsC reverse	TTAGTCGTCGGGATTGAACT
arsB forward	ATGTCAGCGGTGTCACCACC
arsB reverse	TTAGACGCCCCAGAAGGCCG
arsM forward	ATGGTTCAGGACGCAACC
arsM reverse	CTATCCGATTCTATTTGAAA
arsR2 forward	ATGGTTCAGGACGCAACCGC
arsR2 reverse	TTACTCATGGTTGCCTCGCA
Universal 16S 338F	CTCCTACGGGAGGCAGCAG
Universal 16S 784R	GGACTACCAGGGTATCTAATCC
Archaeal 16S 27F	TCCGGTTGATCCTGCCGGAG
Archaeal 16S 685R	TTACGGGATTTCACTCCTAC