| Autor: |
Arima, Hiromi, Horiguchi, Noriomi, Takaichi, Shinichi, Kofuji, Rumiko, Ishida, Ken-Ichiro, Wada, Keishiro, Sakamoto, Toshio |
| Předmět: |
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| Zdroj: |
FEMS Microbiology Ecology; Jan2012, Vol. 79 Issue 1, p34-45, 12p |
| Abstrakt: |
The phylogeny of the terrestrial cyanobacterium N ostoc commune and its neighboring N ostoc species was studied using molecular genetic and chemotaxonomic approaches. At least eight genotypes of N . commune were characterized by the differences among 16 S rRNA gene sequences and the petH gene encoding ferredoxin- NADP+ oxidoreductase and by random amplified polymorphic DNA analysis. The genotypes of N . commune were distributed in Japan without regional specificity. The nrtP gene encoding NrtP-type nitrate/nitrite permease was widely distributed in the genus N ostoc, suggesting that the occurrence of the nrtP gene can be one of the characteristic features that separate cyanobacteria into two groups. The wspA gene encoding a 36- kDa water stress protein was only found in N . commune and N ostoc verrucosum, suggesting that these N ostoc species that form massive colonies with extracellular polysaccharides can be exclusively characterized by the occurrence of the wspA gene. Fifteen species of N ostoc and A nabaena were investigated by comparing their carotenoid composition. Three groups with distinct patterns of carotenoids were related to the phylogenic tree constructed on the basis of 16 S rRNA sequences. N ostoc commune and N ostoc punctiforme were clustered in one monophyletic group and characterized by the occurrence of nostoxanthin, canthaxanthin, and myxol glycosides. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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