FIG. 2.

Phylogenetic affiliation of Chlorb I, II, and III groups within the family Chlorobiaceae. Environmental clones indicated by a number plus “w,” “ws,” and “s” were the sequenced DGGE fragments from Lake Kaiike. Identification of DGGE bands is defined in Fig. 1. Bar, estimated 10% divergence. Chlorobiaceae are divided into four groups according to Alexander et al. (1).