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Saccharopolyspora ghardaiensis sp. nov., an extremely halophilic actinomycete isolated from Algerian Saharan soil

Meklat, Atika and Bouras, Noureddine and Zitouni, Abdelghani and Sabaou, Nasserdine and Mathieu, Florence and Schumann, Peter and Spröer, Cathrin and Klenk, Hans-Peter Saccharopolyspora ghardaiensis sp. nov., an extremely halophilic actinomycete isolated from Algerian Saharan soil. (2014) The Journal of Antibiotics, 67 (4). 299-303. ISSN 0021-8820

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Official URL: https://doi.org/10.1038/ja.2013.136


A novel halophilic actinomycete, strain designated H53T, was isolated from a Saharan soil sample collected from Chaâbet Ntissa, Béni-isguen, Ghardaïa (South of Algeria) and was characterized taxonomically by means of polyphasic approach. Optimal growth was found to occur at 30–35 °C, pH 6–7 and in the presence of 15–25% (w/v) NaCl. The strain was observed to produce abundant aerial mycelium, which formed long chains of rod-shaped spores at maturity, and well developed and fragmented substrate mycelium. The cell wall was determined to contain meso-diaminopimelic acid; the diagnostic whole-cell sugars were arabinose and galactose. The predominant menaquinones were found to be MK-9(H4) and MK-9(H6). The predominant cellular fatty acids were determined to be iso- and anteiso-C17:0, iso-C15:0, and cis9 iso-C17:1. The diagnostic phospholipid detected was phosphatidylcholine. The morphological and chemotaxonomic characteristics of the strain were consistent with those of members of the genus Saccharopolyspora. Phylogenetic analyses on the basis of the 16S ribosomal RNA (rRNA) gene sequence showed that this strain formed a distinct phyletic line within the radiation of the genus Saccharopolyspora. The 16S rRNA sequence similarities between strain H53T and other members of the genus Saccharopolyspora ranged from 92.1 to 94.3%. The DNA G+C content of strain H53T was 72.6%. The genotypic and phenotypic data showed that the strain H53T represents a novel species of the genus Saccharopolyspora, for which the name Saccharopolyspora ghardaiensis sp. nov. is proposed, with the type strain H53T (=DSM 45606T=CCUG 63370T=CECT 8304T).

Item Type:Article
HAL Id:hal-01913464
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Leibniz-Institut Deutsche Sammlung von Mikroorganismen und Zelllkulturen GmBH - DSMZ (GERMANY)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Saâd Dahlab Blida - USDB (ALGERIA)
Laboratory name:
Deposited On:06 Nov 2018 11:08

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