Table 1.

Summary of the bacterial diversity found by pyrosequencing of the apparently healthy and the diseased tissues of SGA-affected P. carnosus colonies.

	Diseased	Healthy
No. of assigned phyla	17	17
No. of assigned classes	38	31
No. of assigned orders	67	56
No. of assigned families	96	83
Count of OTUs	1023	785
Count of unique OTUs	467	344
Count of OTUs exclusive to each group	788	550
Count of exclusive unique OTUs	410	282
No. of OTUs shared by the two groups	235
Count of sequence tags	7208	7208
Phylogenetic diversity index ± SD	27.1 ± 2.4	21.0 ± 4.2
Richness estimate (Chao1) ± SD	579.8 ± 56.3	349.4 ± 107
Diversity estimate (Shannon-Weaver) ± SD	6.6 ± 0.4	5.9 ± 0.4

Count of OTUs is the number of operational taxonomic units observed. Count of unique OTUs is the number of OTUs containing only one sequence tag. Count of sequence tags is the total number of sequences obtained. Numbers of phyla, classes, orders and families are based on taxonomic classification by the Ribosomal Database Project (RDP) Classifier. Phylogentic diversity index is a measure of biodiversity based on their phylogenetic divergence. Chao 1 is an estimator of the minimum richness. Shannon-Weaver Index combines estimates of richness (total number of OTUs) and evenness (relative abundance). Healthy, apparently healthy tissues of SGA affected P. carnosus colonies; Diseased, diseased tissues of SGA affected colonies.