TABLE 2.

Sequence similarities of the cyanobacterial clones used as marker bands in Fig. 1 (lane M)^a

Clone			Closest relative
Designation	EMBL accession no.	% Similarity	Species	EMBL accession no.	Taxonomic description
LD4	AJ006279	95.8	O. limnetica	AJ007908	Filamentous cyanobacterium
LD5	AJ007865	91.5	P. hollandica	AJ007907	Filamentous cyanobacterium
LD6	AJ006280	99.5	O. limnetica	AJ007908	Filamentous cyanobacterium
LD7	AJ007864	93.0	P. hollandica	AJ007907	Filamentous cyanobacterium
LD8	AJ006281	94.3	Nodularia sp.	AJ224447	Filamentous cyanobacterium
LD9	AJ006282	89.2	Synechococcus sp. strain PCC 6301	AF001477	Coccoid cyanobacterium
LD15	AJ006283	91.1	P. hollandica	AJ007907	Filamentous cyanobacterium
LD16	AJ007866	98.9	P. hollandica	AJ007907	Filamentous cyanobacterium
LD18	AJ006284	99.8	O. agardhii	X84811	Filamentous cyanobacterium
LD22	AJ006285	99.8	P. hollandica	AJ007907	Filamentous cyanobacterium
LD25	AJ006286	90.6	P. hollandica	AJ007907	Filamentous cyanobacterium

^aSequences were aligned to the closest relative from the EMBL database. The similarity was calculated with gaps and ambiguities not taken into account.