TABLE 2.

Microbial morphotypes observed microscopically and sequences retrieved which might correspond to them

Population (genus)MorphologyCell size (μm)DGGE sequenceClosest relative in database% Similaritya
SynechococcusCoccus1.5-2.0DGGE-2, CYA-1Synechococcus sp. strain PCC630797.1
SynechococcusCoccus1.5-2.0DGGE-7, CYA-2Synechococcus sp. strain PCC630798.1
ChlorobiumRod0.8 by 2.0-2.5DGGE-5Chlorobium phaeobacteroides95.2
ThiocystisRod2.0-4.0 by 4.0-6.0DGGE-6Thiocystis minor93.7
ThiocystisRod2.0-4.0 by 4.0-6.0DGGE-8Thiocystis minor93.0
CryptomonasChloroplast15 by 30CYA-3Cryptomonas sp.95.1
CryptomonasChloroplast15 by 30CYA-4Cryptomonas sp.95.2
PseudanabaenaFilaments2.5 by 35CYA-5Pseudanabaena limnetica97.0
CytophagaUnknownUnknownDGGE-3Cytophaga WCHB93.3
CytophagaSmall rod, coccus0.5-0.8DGGE-1Cytophaga fermentans88.2
CytophagaUnknownUnknownDGGE-4Cytophaga fermentans88.6
  • a The percent similarity of the 16S rRNA sequence to the closest relative in the database.