Multicellular life cycle of magnetotactic prokaryotes

Most multicellular organisms, prokaryotes as well as animals, plants and algae have a unicellular stage in their life cycle. Here, we describe an uncultured prokaryotic magnetotactic multicellular organism that reproduces by binary fission. It is multicellular in all the stages of its life cycle, an...

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Veröffentlicht in:FEMS microbiology letters 2004-11, Vol.240 (2), p.203-208
Hauptverfasser: Keim, C.N, Martins, J.L, Abreu, F, Rosado, A.S, Barros, H.L. de, Borojevic, R, Lins, U, Farina, M
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container_end_page 208
container_issue 2
container_start_page 203
container_title FEMS microbiology letters
container_volume 240
creator Keim, C.N
Martins, J.L
Abreu, F
Rosado, A.S
Barros, H.L. de
Borojevic, R
Lins, U
Farina, M
description Most multicellular organisms, prokaryotes as well as animals, plants and algae have a unicellular stage in their life cycle. Here, we describe an uncultured prokaryotic magnetotactic multicellular organism that reproduces by binary fission. It is multicellular in all the stages of its life cycle, and during most of the life cycle the cells organize into a hollow sphere formed by a functionally coordinated and polarized single-cell layer that grows by increasing the cell size. Subsequently, all the cells divide synchronously; the organism becomes elliptical, and separates into two equal spheres with a torsional movement in the equatorial plane. Unicellular bacteria similar to the cells that compose these organisms have not been found. Molecular biology analysis showed that all the organisms studied belong to a single genetic population phylogenetically related to many-celled magnetotactic prokaryotes in the delta sub-group of the proteobacteria. This appears to be the first report of a multicellular prokaryotic organism that proliferates by dividing into two equal multicellular organisms each similar to the parent one.
doi_str_mv 10.1016/j.femsle.2004.09.035
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Here, we describe an uncultured prokaryotic magnetotactic multicellular organism that reproduces by binary fission. It is multicellular in all the stages of its life cycle, and during most of the life cycle the cells organize into a hollow sphere formed by a functionally coordinated and polarized single-cell layer that grows by increasing the cell size. Subsequently, all the cells divide synchronously; the organism becomes elliptical, and separates into two equal spheres with a torsional movement in the equatorial plane. Unicellular bacteria similar to the cells that compose these organisms have not been found. Molecular biology analysis showed that all the organisms studied belong to a single genetic population phylogenetically related to many-celled magnetotactic prokaryotes in the delta sub-group of the proteobacteria. 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source Oxford University Press Journals All Titles (1996-Current); MEDLINE; Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection
subjects Algae
Bacteriology
Biological and medical sciences
Brazil
Cell Division
Cell size
Deltaproteobacteria - classification
Deltaproteobacteria - cytology
Deltaproteobacteria - isolation & purification
Deltaproteobacteria - physiology
DGGE
DNA, Bacterial - chemistry
DNA, Bacterial - isolation & purification
DNA, Ribosomal - chemistry
DNA, Ribosomal - isolation & purification
Fundamental and applied biological sciences. Psychology
Genes, rRNA
Geologic Sediments - microbiology
Growth, nutrition, cell differenciation
Life cycle
Life cycles
Magnetotactic bacteria
Magnetotactic multicellular aggregate
Magnetotaxis
Many‐celled magnetotactic prokaryote
Microbiology
Microscopy
Microscopy, Electron
Molecular biology
Molecular Sequence Data
Multicellularity
Organisms
Phylogeny
Population genetics
Prokaryotes
Proteobacteria
RNA, Bacterial - genetics
RNA, Ribosomal, 16S - genetics
Seawater - microbiology
Sequence Analysis, DNA
taxis (physiology)
Water Microbiology
title Multicellular life cycle of magnetotactic prokaryotes
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