PMID: 9446685Apr 4, 1998Paper

Phylogenetic affiliation and ultrastructure of uncultured magnetic bacteria with unusually large magnetosomes

Archives of Microbiology
S SpringMarcos Farina

Abstract

Natural enrichments of magnetic bacteria from the Itaipu lagoon near Rio de Janeiro were dominated by coccoid-to-ovoid morphotypes that produced unusually large magnetosomes. To determine the phylogenetic position of these unusual microorganisms, 16S rRNA genes were retrieved from bacteria magnetically separated from sediment of the Itaipu lagoon by in vitro amplification and cloning of PCR products into a plasmid vector. Partial sequencing of the obtained clones revealed two clusters of closely related sequences affiliated to a distinct lineage consisting exclusively of magnetic bacteria within the alpha-subclass of Proteobacteria. For a detailed phylogenetic analysis, several almost complete sequences of the 16S rRNA genes were determined. One representative clone of each cluster provided a PCR template for the in vitro transcription of group-specific polynucleotide probes complementary to a variable region of the 16S rRNA molecule. At least three different morphotypes of magnetic bacteria were reliably identified by post-embedding hybridization of ultra-thin sections. Electron microscopic analyses of hybridized cells enabled for the first time a detailed description of the morphological variety and ultrastructure of phylogen...Continue Reading

Citations

Aug 21, 2013·Trends in Microbiology·Christopher T Lefèvre, Long-Fei Wu
Feb 21, 2003·FEMS Microbiology Letters·Flávia FreitasUlysses Lins
Oct 22, 2008·Proceedings of the National Academy of Sciences of the United States of America·Dirk SchumannHojatollah Vali
Jun 5, 2012·Applied and Environmental Microbiology·Wen-Yan ZhangLong-Fei Wu
May 26, 2009·Applied and Environmental Microbiology·Sabrina SchübbeDennis A Bazylinski
Mar 5, 2013·Applied and Environmental Microbiology·Wen-Yan ZhangLong-Fei Wu
Aug 9, 2005·Applied and Environmental Microbiology·Ulysses LinsPeter R Buseck
Sep 10, 2005·Applied and Environmental Microbiology·Takehiko KenzakaMasao Nasu
Feb 8, 2006·Applied and Environmental Microbiology·Timothy J WilliamsDennis A Bazylinski
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Feb 8, 2000·Proceedings of the National Academy of Sciences of the United States of America·G PetroniG Rosati
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Jun 10, 2008·FEMS Microbiology Reviews·Dirk Schüler
Nov 3, 2015·Environmental Microbiology·Velimir Gayevskiy, Matthew R Goddard
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Jan 14, 2004·Microbiological Research·Ulysses LinsBechara Kachar
Dec 10, 2014·Current Microbiology·Maxime FuducheNathalie Pradel
Nov 4, 2004·FEMS Microbiology Letters·Carolina N KeimMarcos Farina
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Jan 8, 2011·Physical Biology·Leida G AbraçadoMarcos Farina
Feb 2, 2002·Canadian Journal of Microbiology·C N KeimM Farina

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