MaghrebDataLibMedV2, Main, Exploration, bibRecord, 000106

Novel prokaryotic diversity in sediments of Tunisian multipond solar saltern.

Identifieur interne : 000106 ( Main/Exploration ); précédent : 000105; suivant : 000107

Novel prokaryotic diversity in sediments of Tunisian multipond solar saltern.

Auteurs : Houda Baati [Tunisie] ; Sonda Guermazi ; Neji Gharsallah ; Abdelghani Sghir ; Emna Ammar

Source :

Research in microbiology [ 1769-7123 ] ; 2010.

RBID : pubmed:20558280

Descripteurs français

KwdFr :
- ADN ribosomique (MeSH), ARN ribosomique 16S (MeSH), Analyse de séquence d'ARN (MeSH), Bacteroidetes (génétique), Bacteroidetes (isolement et purification), Bactéries (classification), Bactéries (génétique), Bactéries (isolement et purification), Biodiversité (MeSH), Euryarchaeota (classification), Euryarchaeota (génétique), Euryarchaeota (isolement et purification), Halobacteriales (génétique), Halobacteriales (isolement et purification), Microbiologie de l'eau (MeSH), Phylogenèse (MeSH), Proteobacteria (génétique), Proteobacteria (isolement et purification), Réaction de polymérisation en chaîne (MeSH), Salinité (MeSH), Sels (MeSH), Sédiments géologiques (microbiologie), Tunisie (MeSH), Variation génétique (MeSH), Écosystème (MeSH).
MESH :
- génétique : Bacteroidetes, Bactéries, Euryarchaeota, Halobacteriales, Proteobacteria.
- isolement et purification : Bacteroidetes, Bactéries, Euryarchaeota, Halobacteriales, Proteobacteria.
- microbiologie : Sédiments géologiques.
- ADN ribosomique, ARN ribosomique 16S, Analyse de séquence d'ARN, Bactéries, Biodiversité, Euryarchaeota, Microbiologie de l'eau, Phylogenèse, Réaction de polymérisation en chaîne, Salinité, Sels, Tunisie, Variation génétique, Écosystème.
Wicri :
- geographic : Tunisie.

English descriptors

KwdEn :
- Bacteria (classification), Bacteria (genetics), Bacteria (isolation & purification), Bacteroidetes (genetics), Bacteroidetes (isolation & purification), Biodiversity (MeSH), DNA, Ribosomal (MeSH), Ecosystem (MeSH), Euryarchaeota (classification), Euryarchaeota (genetics), Euryarchaeota (isolation & purification), Genetic Variation (MeSH), Geologic Sediments (microbiology), Halobacteriales (genetics), Halobacteriales (isolation & purification), Phylogeny (MeSH), Polymerase Chain Reaction (MeSH), Proteobacteria (genetics), Proteobacteria (isolation & purification), RNA, Ribosomal, 16S (MeSH), Salinity (MeSH), Salts (MeSH), Sequence Analysis, RNA (MeSH), Tunisia (MeSH), Water Microbiology (MeSH).
MESH :
- chemical : DNA, Ribosomal, RNA, Ribosomal, 16S, Salts.
- geographic : Tunisia.
- classification : Bacteria, Euryarchaeota.
- genetics : Bacteria, Bacteroidetes, Euryarchaeota, Halobacteriales, Proteobacteria.
- isolation & purification : Bacteria, Bacteroidetes, Euryarchaeota, Halobacteriales, Proteobacteria.
- microbiology : Geologic Sediments.
- Biodiversity, Ecosystem, Genetic Variation, Phylogeny, Polymerase Chain Reaction, Salinity, Sequence Analysis, RNA, Water Microbiology.

Abstract

The phylogenetic diversity of a sediment microbial community from two ponds having different salinities, 150-200 g/l (M2) and 250-300 g/l (TS38), of an Sfax (Tunisia) solar saltern, was investigated using 16S rRNA clone libraries. The 16S rRNA genes from 135 bacterial clones and 105 archaeal clones were sequenced and phylogenetically analyzed. 32 operational taxonomic units (OTUs) were generated for Bacteria and 64 for Archaea. The bacterial community in M2 sediment was affiliated only with Bacteroidetes, while that in TS38 sediment was dominated by clones affiliated with Bacteroidetes, (gamma, alpha, delta) Proteobacteria and unclassified bacteria; these represented 56.52, 26.08, 4.34, 4.34 and 8.7% of the OTUs, respectively. In the M2 and TS38 sediments, 44.44 and 43.47% of the bacterial OTUs, respectively, were novel. All archaeal sequences fell into the Euryarchaeota phylum. In both sediments, 38.46 and 72.55% of the OTUs had less than 97% 16S rRNA sequence identity, representing novel OTUs. Two sequences, retrieved from TS38 sediment, were found to be affiliated with the candidate division MSBL-1 defining two OTUs. The sediment phylogenetic study revealed the presence of a highly diverse microbial population in highly salty media.

DOI: 10.1016/j.resmic.2010.05.009
PubMed: 20558280

Affiliations:

Tunisie

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Le document en format XML

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<term>Bacteria (genetics)</term>
<term>Bacteria (isolation & purification)</term>
<term>Bacteroidetes (genetics)</term>
<term>Bacteroidetes (isolation & purification)</term>
<term>Biodiversity (MeSH)</term>
<term>DNA, Ribosomal (MeSH)</term>
<term>Ecosystem (MeSH)</term>
<term>Euryarchaeota (classification)</term>
<term>Euryarchaeota (genetics)</term>
<term>Euryarchaeota (isolation & purification)</term>
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<term>Halobacteriales (isolation & purification)</term>
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<term>Proteobacteria (genetics)</term>
<term>Proteobacteria (isolation & purification)</term>
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<term>Salinity (MeSH)</term>
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<term>Sequence Analysis, RNA (MeSH)</term>
<term>Tunisia (MeSH)</term>
<term>Water Microbiology (MeSH)</term>
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<term>ARN ribosomique 16S (MeSH)</term>
<term>Analyse de séquence d'ARN (MeSH)</term>
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<term>Bacteroidetes (isolement et purification)</term>
<term>Bactéries (classification)</term>
<term>Bactéries (génétique)</term>
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<term>Halobacteriales (isolement et purification)</term>
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<term>Phylogenèse (MeSH)</term>
<term>Proteobacteria (génétique)</term>
<term>Proteobacteria (isolement et purification)</term>
<term>Réaction de polymérisation en chaîne (MeSH)</term>
<term>Salinité (MeSH)</term>
<term>Sels (MeSH)</term>
<term>Sédiments géologiques (microbiologie)</term>
<term>Tunisie (MeSH)</term>
<term>Variation génétique (MeSH)</term>
<term>Écosystème (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" xml:lang="en"><term>DNA, Ribosomal</term>
<term>RNA, Ribosomal, 16S</term>
<term>Salts</term>
</keywords>
<keywords scheme="MESH" type="geographic" xml:lang="en"><term>Tunisia</term>
</keywords>
<keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Bacteria</term>
<term>Euryarchaeota</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Bacteria</term>
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<term>Euryarchaeota</term>
<term>Halobacteriales</term>
<term>Proteobacteria</term>
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<term>Bactéries</term>
<term>Euryarchaeota</term>
<term>Halobacteriales</term>
<term>Proteobacteria</term>
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<term>Bacteroidetes</term>
<term>Euryarchaeota</term>
<term>Halobacteriales</term>
<term>Proteobacteria</term>
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<keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Bacteroidetes</term>
<term>Bactéries</term>
<term>Euryarchaeota</term>
<term>Halobacteriales</term>
<term>Proteobacteria</term>
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<keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Sédiments géologiques</term>
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<keywords scheme="MESH" xml:lang="en"><term>Biodiversity</term>
<term>Ecosystem</term>
<term>Genetic Variation</term>
<term>Phylogeny</term>
<term>Polymerase Chain Reaction</term>
<term>Salinity</term>
<term>Sequence Analysis, RNA</term>
<term>Water Microbiology</term>
</keywords>
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<term>ARN ribosomique 16S</term>
<term>Analyse de séquence d'ARN</term>
<term>Bactéries</term>
<term>Biodiversité</term>
<term>Euryarchaeota</term>
<term>Microbiologie de l'eau</term>
<term>Phylogenèse</term>
<term>Réaction de polymérisation en chaîne</term>
<term>Salinité</term>
<term>Sels</term>
<term>Tunisie</term>
<term>Variation génétique</term>
<term>Écosystème</term>
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<front><div type="abstract" xml:lang="en">The phylogenetic diversity of a sediment microbial community from two ponds having different salinities, 150-200 g/l (M2) and 250-300 g/l (TS38), of an Sfax (Tunisia) solar saltern, was investigated using 16S rRNA clone libraries. The 16S rRNA genes from 135 bacterial clones and 105 archaeal clones were sequenced and phylogenetically analyzed. 32 operational taxonomic units (OTUs) were generated for Bacteria and 64 for Archaea. The bacterial community in M2 sediment was affiliated only with Bacteroidetes, while that in TS38 sediment was dominated by clones affiliated with Bacteroidetes, (gamma, alpha, delta) Proteobacteria and unclassified bacteria; these represented 56.52, 26.08, 4.34, 4.34 and 8.7% of the OTUs, respectively. In the M2 and TS38 sediments, 44.44 and 43.47% of the bacterial OTUs, respectively, were novel. All archaeal sequences fell into the Euryarchaeota phylum. In both sediments, 38.46 and 72.55% of the OTUs had less than 97% 16S rRNA sequence identity, representing novel OTUs. Two sequences, retrieved from TS38 sediment, were found to be affiliated with the candidate division MSBL-1 defining two OTUs. The sediment phylogenetic study revealed the presence of a highly diverse microbial population in highly salty media.</div>
</front>
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Novel prokaryotic diversity in sediments of Tunisian multipond solar saltern.

Novel prokaryotic diversity in sediments of Tunisian multipond solar saltern.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki