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Morphological and genetic diversity of the thermophilic cyanobacterium, Mastigocladus laminosus (Stigonematales, Cyanobacteria) from Japan and Myanmar
Author(s) -
Soe Khin Myat,
Yokoyama Akiko,
Yokoyama Jun,
Hara Yoshiaki
Publication year - 2011
Publication title -
phycological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.438
H-Index - 44
eISSN - 1440-1835
pISSN - 1322-0829
DOI - 10.1111/j.1440-1835.2011.00611.x
Subject(s) - biology , lineage (genetic) , phylogenetic tree , thermophile , phylogenetics , taxonomy (biology) , phylogeography , evolutionary biology , 16s ribosomal rna , strain (injury) , cyanobacteria , biogeography , genetic diversity , zoology , gene , ecology , genetics , bacteria , population , demography , anatomy , sociology
SUMMARY The morphology and phylogeny of 13 strains of a thermophilic cyanobacterium, Mastigocladus laminosus Cohn, isolated from hot springs in Japan and Myanmar were analyzed to determine taxonomy and biogeography. From the morphological observations of cell size, there were significant differences among strains. Phylogenetic analyses based on 16S rRNA gene sequences revealed two lineages: Lineages I and II. Lineage I consisted of strains collected in Japan and reference strains from a previous study (CCMEE 5329 and 5331, Hakone, Japan); Lineage II included all of the Myanmar strains and one Japanese strain, and was a novel lineage in phylogeographic studies on M. laminosus . Since strains in the Lineage II tended to have larger cells than those in the Lineage I, the morphological and phylogenetic lineages corresponded well with each other.