Open AccessGenetic diversity among Synechococcus spp. (cyanobacteria) isolated from the pelagial of Lake Constance
Author(s) -
Ernst Anneliese,
Marschall Paul,
Postius Christine
Publication year - 1995
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/j.1574-6941.1995.tb00143.x
Subject(s) - biology , synechococcus , genetic diversity , cyanobacteria , phycocyanin , restriction fragment length polymorphism , gene , botany , genetics , ecology , genotype , bacteria , population , demography , sociology
Seven phycoerythrin (PE)‐rich and six phycocyanin (PC)‐rich unicellular cyanobacteria of the Synechococcus type were isolated from the pelagial of Lake Constance. The genetic diversity among the isolates was evaluated using restriction fragment length polymorphism (RFLP) within the psbA gene family. Nine out of 13 isolates exhibit different DNA structures in the probed areas and, furthermore, they differ from morphologically similar strains collected from other lakes. The data set does not support a principal distinction between PC‐rich and PE‐rich strains but it reveals less heterogeneity in the coding region of the psbA genes among PE‐rich isolates than among PC‐rich isolates. The isolation of distinct strains in different seasons suggests species diversity and seasonal occurrence of Synechococcus spp. in Lake Constance.