دورية أكاديمية
Comparative analysis of Beggiatoa from hypersaline and marine environments.
| العنوان: | Comparative analysis of Beggiatoa from hypersaline and marine environments. |
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| المؤلفون: | de Albuquerque JP; Instituto de Microbiologia Prof. Paulo de Góes, Universidade Federal do Rio de Janeiro, Centro de Ciências de Saúde, Bloco I, 21941-902 Rio de Janeiro, Brazil., Keim CN, Lins U |
| المصدر: | Micron (Oxford, England : 1993) [Micron] 2010 Jul; Vol. 41 (5), pp. 507-17. Date of Electronic Publication: 2010 Feb 11. |
| نوع المنشور: | Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Pergamon Press Country of Publication: England NLM ID: 9312850 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-4291 (Electronic) Linking ISSN: 09684328 NLM ISO Abbreviation: Micron Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Oxford ; New York : Pergamon Press, c1993- |
| مواضيع طبية MeSH: | Water Microbiology*, Beggiatoa/*cytology , Beggiatoa/*isolation & purification, Beggiatoa/classification ; Beggiatoa/genetics ; Cluster Analysis ; Cytoplasm/ultrastructure ; DNA, Bacterial/chemistry ; DNA, Bacterial/genetics ; DNA, Ribosomal/chemistry ; DNA, Ribosomal/genetics ; Inclusion Bodies/chemistry ; Locomotion ; Microscopy ; Microscopy, Electron, Transmission ; Molecular Sequence Data ; Nitrates/analysis ; Periplasm/chemistry ; Phosphorus/analysis ; Phylogeny ; RNA, Ribosomal, 16S/genetics ; Sequence Analysis, DNA ; Sulfur/analysis ; Vacuoles/ultrastructure |
| مستخلص: | The main criterion to classify a microorganism as belonging to the genus Beggiatoa is its morphology. All multicellular, colorless, gliding bacterial filaments containing sulfur globules described so far belong to this genus. At the ultrastructural level, they show also a very complex cell envelope structure. Here we describe uncultured vacuolated and non-vacuolated bacteria from two different environments showing all characteristics necessary to assign a bacterium to the genus Beggiatoa. We also intended to investigate whether narrow and vacuolate Beggiatoa do differ morphologically as much as they do phylogenetically. Both large, vacuolated trichomes and narrow filaments devoid of vacuoles were observed. We confirmed the identity of the narrow filaments by 16S rRNA phylogenetic analysis. The diameters of the trichomes ranged from 2.4 to 34 microm, and their lengths ranged from 10 microm to over 30 mm. Narrow trichomes moved by gliding at 3.0 microm/s; large filaments moved at 1.5 microm/s. Periplasmic sulfur inclusions were observed in both types of filaments, whereas phosphorus-rich bodies were found only in narrow trichomes. On the other hand, nitrate vacuoles were observed only in large trichomes. Ultra-thin section transmission electron microscopy showed differences between the cell ultrastructure of narrow (non-vacuolated) and large (vacuolated) Beggiatoa. We observed that cell envelopes from narrow Beggiatoa consist of five layers, whereas cell envelopes from large trichomes contain four layers. (Copyright 2010 Elsevier Ltd. All rights reserved.) |
| سلسلة جزيئية: | GENBANK GU117706; GU117707 |
| المشرفين على المادة: | 0 (DNA, Bacterial) 0 (DNA, Ribosomal) 0 (Nitrates) 0 (RNA, Ribosomal, 16S) 27YLU75U4W (Phosphorus) 70FD1KFU70 (Sulfur) |
| تواريخ الأحداث: | Date Created: 20100309 Date Completed: 20100806 Latest Revision: 20131121 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1016/j.micron.2010.01.009 |
| PMID: | 20207153 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1878-4291 |
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| DOI: | 10.1016/j.micron.2010.01.009 |