1
|
Boudjelal F, Zitouni A, Bouras N, Spröer C, Klenk HP, Smaoui S, Mathieu F. Rare Halophilic Nocardiopsis from Algerian Saharan Soils as Tools for Biotechnological Processes in Pharmaceutical Industry. BIOMED RESEARCH INTERNATIONAL 2023; 2023:1061176. [PMID: 37284028 PMCID: PMC10241594 DOI: 10.1155/2023/1061176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 05/01/2023] [Accepted: 05/15/2023] [Indexed: 06/08/2023]
Abstract
The Sahara Desert, one of the most extreme ecosystems in the planet, constitutes an unexplored source of microorganisms such as mycelial bacteria. In this study, we investigated the diversity of halophilic actinobacteria in soils collected from five regions of the Algerian Sahara. A total of 23 halophilic actinobacterial strains were isolated by using a humic-vitamin agar medium supplemented with 10% NaCl. The isolated halophilic strains were subjected to taxonomic analysis using a polyphasic approach, which included morphological, chemotaxonomic, physiological (numerical taxonomy), and phylogenetic analyses. The isolates showed abundant growth in CMA (complex medium agar) and TSA (tryptic soy agar) media containing 10% NaCl, and chemotaxonomic characteristics were consistent with their assignment to the genus Nocardiopsis. Analysis of the 16S rRNA sequence of 23 isolates showed five distinct clusters and a similarity level ranging between 98.4% and 99.8% within the Nocardiopsis species. Comparison of their physiological characteristics with the nearest species showed significant differences with the closely related species. Halophilic Nocardiopsis isolated from Algerian Sahara soil represents a distinct phyletic line suggesting a potential new species. Furthermore, the isolated strains of halophilic Nocardiopsis were screened for their antagonistic properties against a broad spectrum of microorganisms by the conventional agar method (agar cylinders method) and found to have the capacity to produce bioactive secondary metabolites. Except one isolate (AH37), all isolated Nocardiopsis showed moderate to high biological activities against Pseudomonas syringae and Salmonella enterica, and some isolates showed activities against Agrobacterium tumefaciens, Serratia marcescens, and Klebsiella pneumoniae. However, no isolates were active against Bacillus subtilis, Aspergillus flavus, or Aspergillus niger. The obtained finding implies that the unexplored extreme environments such as the Sahara contain many new bacterial species as a novel drug source for medical and industrial applications.
Collapse
Affiliation(s)
- Farida Boudjelal
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
- Faculty of Biological Sciences (FSB), University of Sciences and Technologies Houari Boumediene (USTHB), BP 32 El Alia, Bab Ezzouar, 16111 Algiers, Algeria
| | - Abdelghani Zitouni
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
| | - Noureddine Bouras
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
- Laboratoire de Valorisation et Conservation des Écosystèmes Arides (LVCEA), Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaia, Ghardaia, Algeria
| | - Cathrin Spröer
- Department Bioinformatics and Databases, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Brunswick, Germany
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Slim Smaoui
- Laboratory of Microbial Biotechnology and Engineering Enzymes (LMBEE), Center of Biotechnology of Sfax (CBS), University of Sfax, Road of Sidi Mansour Km 6, P.O. Box 1177 3018 Sfax, Tunisia
| | - Florence Mathieu
- Laboratoire de Génie Chimique, UMR 5503 CNRS/INPT/UPS, INP-ENSAT, 1, Université de Toulouse, Avenue de l'Agrobiopôle, 31326 Castanet-Tolosan, France
| |
Collapse
|
2
|
Menasria T, Monteoliva-Sánchez M, Benhadj M, Benammar L, Boukoucha M, Aguilera M. Unraveling the enzymatic and antibacterial potential of rare halophilic actinomycetes from Algerian hypersaline wetland ecosystems. J Basic Microbiol 2022; 62:1202-1215. [PMID: 35945171 DOI: 10.1002/jobm.202200085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 06/18/2022] [Accepted: 07/10/2022] [Indexed: 11/07/2022]
Abstract
The study aimed to isolate rare halophilic actinomycetes from hypersaline soils of Algerian inland Wetland Ecosystems "Sebkhas-Chotts" located in arid and hot hyperarid lands with international importance under the Ramsar Convention and to explore their enzyme-producing and antibacterial abilities. The halophilic actinomycetes were selectively isolated using agar-rich media supplemented with 5, 10, and 15% (W/V) of total salts. Thirty-one isolates were obtained and 16S rRNA gene sequencing analysis revealed the presence of members affiliated to rare halophilic actinobacterial genera (Actinopolyspora and Nocardiopsis) accounting for 74.19% (23 isolates out of 31) and 25.8% (8 isolates), respectively. Both phylotypes are alkalitolerant and halophilic thermotolerant actinomycetes displaying significant hydrolytic activities relative to (amylase, asparaginase, cellulase, esterase, glutaminase, inulinase, protease, pectinase, xylanase), and over 96% of tested isolates exhibited all common enzymes, mainly active at 10% of growing salt. In addition, high antibacterial activity was observed against Bacillus cereus, Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus. The findings showed that saline wetlands ecosystems represent a rich reservoir for the isolation of significant rare halophilic actinomycetes with potential adaptive features and valuable sources for novel bioactive metabolites and biocatalysts of biotechnological interest.
Collapse
Affiliation(s)
- Taha Menasria
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, University of Larbi Tebessi, Tebessa, Algeria.,Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
| | | | - Mabrouka Benhadj
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, University of Larbi Tebessi, Tebessa, Algeria
| | - Leyla Benammar
- Department of Microbiology and Biochemistry, Faculty of Natural and Life Sciences University of Batna, Batna, Algeria
| | - Mourad Boukoucha
- Department of Applied Biology, Faculty of Exact Sciences and Natural and Life Sciences, University of Larbi Tebessi, Tebessa, Algeria
| | - Margarita Aguilera
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Granada, Spain
| |
Collapse
|
3
|
Saker R, Bouras N, Meklat A, Holtz MD, Klenk HP, Nouioui I. Genome-based reclassification of Actinopolyspora righensis Meklat et al. 2013 as a later heterotypic synonym of Actinopolyspora lacussalsi Guan et al. 2013 and description of Actinopolyspora lacussalsi subsp. lacussalsi subsp. nov. and Actinopolyspora lacussalsi subsp. righensis subsp. nov. Arch Microbiol 2022; 204:501. [PMID: 35851423 DOI: 10.1007/s00203-022-03120-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 11/02/2022]
Abstract
A genome led phylophasic study was designed to determine the taxonomic status of a strain, DSM 45956, recovered from a Saharan desert soil. A wealth of taxonomic data, including average nucleotide identity and DNA:DNA hybridization (DDH) values, showed that the isolate and the type strains of Actinopolyspora lacussalsi and Actinopolyspora righensis belong to the same species. Consequently, it is proposed that A. righensis is a heterotypic synonym of A. lacussalsi. Similarly, DDH values and associated phenotypic data show that A. lacussalsi contains two subspecies, A. lacussalsi subsp. lacussalsi and A. lacussalsi subsp. righensis which includes isolate DSM 45956.
Collapse
Affiliation(s)
- Rafika Saker
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
| | - Noureddine Bouras
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria. .,Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaia, Ghardaïa, Algeria.
| | - Atika Meklat
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
| | - Michael D Holtz
- Field Crop Development Centre, Alberta Agriculture and Forestry, 5030-50 Street, Lacombe, AB, T4L 1W1, Canada
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Imen Nouioui
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, 7B, 38124Braunschweig, Inhoffenstraße, Germany
| |
Collapse
|
4
|
Spiractinospora alimapuensis gen. nov., sp. nov., isolated from marine sediment of Valparaíso Bay (Chile) and proposal for reclassification of two species of the genus Nocardiopsis. Int J Syst Evol Microbiol 2022; 72. [DOI: 10.1099/ijsem.0.005207] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An alkaliphilic actinobacterium, designated VN6-2T, was isolated from marine sediment collected from Valparaíso Bay, Chile. Strain VN6-2T formed yellowish-white branched substrate mycelium without fragmentation. Aerial mycelium was well developed, forming wavy or spiral spore chains. Strain VN6-2T exhibited a 16S rRNA gene sequence similarity of 93.9 % to
Salinactinospora qingdaonensis
CXB832T, 93.7 % to
Murinocardiopsis flavida
14-Be-013T, and 93.7 % to
Lipingzhangella halophila
14-Be-013T. Genome sequencing revealed a genome size of 5.9 Mb and an in silico G+C content of 69.3 mol%. Both of the phylogenetic analyses based on 16S rRNA gene sequences and the up-to-date bacterial core gene sequences revealed that strain VN6-2T formed a distinct monophyletic clade within the family
Nocardiopsaceae
. Chemotaxonomic assessment of strain VN6-2T showed that the major fatty acids were iso-C16 : 0, anteiso-C17 : 0 and 10-methyl-C18 : 0, and the predominant respiratory quinones were MK-9, MK-9(H2) and MK-9(H4). Whole-cell hydrolysates contained meso-diaminopimelic acid as the cell-wall diamino acid, and ribose and xylose as the diagnostic sugars. The polar lipid profile consisted of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, aminophospholipids, glycolipid and phospholipid. Based on the results of this polyphasic study, a novel genus, Spiractinospora gen. nov., is proposed within the family
Nocardiopsaceae
and the type species Spiractinospora alimapuensis gen. nov., sp. nov. The type strain is VN6-2T (CECT 30026T, CCUG 66258T). On the basis of the phylogenetic results herein, we also propose that Nocardiopsis arvandica and Nocardiopsis litoralis are later heterotypic synonyms of
Nocardiopsis sinuspersici
and
Nocardiopsis kunsanensis
, respectively, for which emended descriptions are given.
Collapse
|
5
|
Diketopiperazine derivative from marine actinomycetes Nocardiopsis sp. SCA30 with antimicrobial activity against MRSA. Arch Microbiol 2021; 203:6173-6181. [PMID: 34632524 DOI: 10.1007/s00203-021-02582-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 10/20/2022]
Abstract
Actinobacteria isolated from marine sources are a potential source of novel natural products. In this study, we report isolation, biological activity and characterization of secondary metabolites from strain Nocardiopsis sp. SCA30, isolated from marine sediments of Havelock Islands, Andaman and Nicobar, India. The ethyl acetate extracts of the isolate on screening for biological activity demonstrated antibacterial potency and antiproliferative activity. The extracts showed anticancer activity in a panel of cell lines, including HCT 15, HT 29, MCF 7 and MDA-MB 468, at concentrations ranging from 62.5 to 1000 µg/ml. A dose-dependent reduction in cell viability was observed in all the tested cell lines. The extract at 15 µg/ml and 30 µg/ml inhibited growth of methicillin-resistant Staphylococcus aureus ATCC NR-46071 and NR-46171 with MIC's of 15.62 and 7.81 µg/ml, respectively. LC-MS and NMR studies revealed that the antibacterial and anticancer compound isolated from Nocardiopsis sp. SCA30 is 1-acetyl-4-4(hydroxyphenyl)piperazine.
Collapse
|
6
|
Biodegradation and Characterization of Streptomyces sp. (JMCACA3) from Acid Corroded Iron Plate. Curr Microbiol 2021; 78:1245-1255. [PMID: 33629120 DOI: 10.1007/s00284-021-02374-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 02/05/2021] [Indexed: 01/03/2023]
Abstract
From acid corroded iron plates five different types of actinobacteria were isolated. Among the five, JMCACA3 strain was selected for the present study. In ISP media, JMCACA3 strain showed well-developed aerial and substrate mycelia were observed. This strain showed good growth in 12 different carbon and 4 different nitrogen sources. The 16S rRNA sequence of phylogenetic analysis by neighbor-joining method identified the studied strain belongs to Streptomyces sp. The biodegradation activity of the strain analyzed by UV and FTIR analysis, which revealed that the various concentrations of Benzimidazole inhibitor with JMCACA3 culture showed slightly varied results. For weight loss method, mild steel coupons incubated with JMCACA3 culture, Benzimidazole inhibitor + JMCACA3 culture and mixed sample showed that JMCACA3 strain utilized the inhibitor as their energy source and the weight the coupons were slightly varied, evidenced by XRD spectra and showed Fe2O3 corrosion products. Our study concluded that the JMCACA3 strain, an iron-reducing actinobacteria which utilizes and converted the corrosion inhibitor Benzimidazole as their energy source. So, it is very urgent to develop more powerful corrosion inhibitor from green biocide or microbial-based biocide and their analog which incorporated into the pre-existing Benzimidazole to increase the corrosion inhibitor level against the biofilm of actinobacterial influenced corrosion.
Collapse
|
7
|
Camacho Pozo MI, Wieme AD, Pérez SR, Llauradó Maury G, Snauwaert C, Lescaylle Veranes Y, Peña Zamora L, Schumann P, Vandamme P. Nocardiopsis dassonvillei subsp. crassaminis subsp. nov., isolated from freshwater sediment, and reappraisal of Nocardiopsis alborubida Grund and Kroppenstedt 1990 emend. Nouioui et al. 2018. Int J Syst Evol Microbiol 2020; 70:6172-6179. [PMID: 33095134 DOI: 10.1099/ijsem.0.004514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
An actinomycete, strain D1T, was isolated from a freshwater sediment sample collected from the San Pablo river in the La Risueña community, Santiago de Cuba province, Cuba. The strain was identified as a member of the genus Nocardiopsis by means of a polyphasic taxonomic study. It produced a light yellow non-fragmented substrate mycelium, a white well-developed aerial mycelium and straight to flexuous hyphae. No specific spore chains were observed. Strain D1T contained meso-diaminopimelic acid, no diagnostic sugars, and MK-10(H2), MK-10(H4), MK-10 and MK-10(H6) as predominant menaquinones, but not phosphatidylcholine as diagnostic polar lipid of the genus Nocardiopsis. The predominant fatty acids were iso-C16 : 0, 10-methyl-C18 : 0 and anteiso-C17 : 0. Strain D1T showed the highest degree of 16S rRNA gene sequence similarity to Nocardiopsis synnematoformans DSM 44143T (99.8 %), Nocardiopsis dassonvillei subsp. albirubida NBRC 13392T (99.8 %) and Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111T (99.6 %). A genomic OrthoANIu value between D1T and N. dassonvillei subsp. dassonvillei DSM 43111T of 97.63 % and a dDDH value of 78.9 % indicated that strain D1T should be classified in N. dassonvillei. However, phenotypic characteristics distinguished strain D1T from its nearest neighbour taxon. On basis of these results we propose to classify strain D1T (=LMG 30468T=CECT 30033T) as a representative of a novel subspecies of the genus Nocardiopsis, for which the name Nocardiopsis dassonvillei subsp. crassaminis subsp. nov. is proposed. In addition, the genomic distance between N. dassonvillei subsp. albirubida NBRC 13392T and N. dassonvillei subsp. dassonvillei DSM 43111T as determined through OrthoANIu (93.64 %) and dDDH (53.40 %), along with considerable phenotypic and chemotaxonomic differences reported in earlier studies, indicated that the classification of this taxon as Nocardiopsis alborubida Grund and Kroppenstedt 1990 is to be preferred over its classification as N. dassonvillei subsp. albirubida Evtushenko et al. 2000.
Collapse
Affiliation(s)
- Miladis Isabel Camacho Pozo
- Center for Industrial Biotechnology Studies, Faculty of Exact and Natural Sciences. University of Oriente, Patricio Lumumba, Santiago de Cuba 90500, Cuba
| | - Anneleen D Wieme
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Faculty of Sciences, Ghent University, K.L. Ledeganckstraat 35. B-9000 Ghent, Belgium
| | - Suyén Rodríguez Pérez
- Laboratory of Antibodies and Experimental Biomodels, Prolongation of 23th street and Caney highway, Vista Alegre, Santiago de Cuba, Cuba
| | - Gabriel Llauradó Maury
- Center for Industrial Biotechnology Studies, Faculty of Exact and Natural Sciences. University of Oriente, Patricio Lumumba, Santiago de Cuba 90500, Cuba
| | - Cindy Snauwaert
- BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Faculty of Sciences, Ghent University, K.L. Ledeganckstraat 35. B-9000 Ghent, Belgium
| | - Yaneisy Lescaylle Veranes
- Center for Industrial Biotechnology Studies, Faculty of Exact and Natural Sciences. University of Oriente, Patricio Lumumba, Santiago de Cuba 90500, Cuba
| | - Leonor Peña Zamora
- Center for Industrial Biotechnology Studies, Faculty of Exact and Natural Sciences. University of Oriente, Patricio Lumumba, Santiago de Cuba 90500, Cuba
| | - Peter Schumann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Peter Vandamme
- Laboratory of Microbiology, Faculty of Sciences, Ghent University, K.L. Ledeganckstraat 35. B-9000 Ghent, Belgium.,BCCM/LMG Bacteria Collection, Laboratory of Microbiology, Faculty of Sciences, Ghent University, K.L. Ledeganckstraat 35. B-9000 Ghent, Belgium
| |
Collapse
|
8
|
Piñar G, Tafer H, Schreiner M, Miklas H, Sterflinger K. Decoding the biological information contained in two ancient Slavonic parchment codices: an added historical value. Environ Microbiol 2020; 22:3218-3233. [PMID: 32400083 PMCID: PMC7687136 DOI: 10.1111/1462-2920.15064] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 02/06/2023]
Abstract
This study provides an example in the emerging field of biocodicology showing how metagenomics can help answer relevant questions that may contribute to a better understanding of the history of ancient manuscripts. To this end, two Slavonic codices dating from the 11th century were investigated through shotgun metagenomics. Endogenous DNA enabled to infer the animal origin of the skins used in the manufacture of the two codices, while nucleic sequences recovered from viruses were investigated for the first time in this material, opening up new possibilities in the field of biocodicology. In addition, the microbiomes colonizing the surface of the parchments served to determine their conservation status and their latent risk of deterioration. The saline environment provided by the parchments selected halophilic and halotolerant microorganisms, which are known to be responsible for the biodegradation of parchment. Species of Nocardiopsis, Gracilibacillus and Saccharopolyspora, but also members of the Aspergillaceae family were detected in this study, all possessing enzymatic capabilities for the biodeterioration of this material. Finally, a relative abundance of microorganisms originating from the human skin microbiome were identified, most probably related to the intensive manipulation of the manuscripts throughout the centuries, which should be taken with caution as they can be potential pathogens.
Collapse
Affiliation(s)
- Guadalupe Piñar
- Institute of Microbiology and Microbial Biotechnology, Department of BiotechnologyUniversity of Natural Resources and Life Sciences, Muthgasse 11, A‐1190ViennaAustria
| | - Hakim Tafer
- Institute of Microbiology and Microbial Biotechnology, Department of BiotechnologyUniversity of Natural Resources and Life Sciences, Muthgasse 11, A‐1190ViennaAustria
| | - Manfred Schreiner
- Institute of Science and Technology in Art (ISTA)Academy of Fine Arts ViennaSchillerplatz 3, A‐1010 ViennaAustria
| | - Heinz Miklas
- Department of Slavonic StudiesUniversity of ViennaSpitalgasse 2‐4, Hof 3, A‐1090 ViennaAustria
| | - Katja Sterflinger
- Institute of Microbiology and Microbial Biotechnology, Department of BiotechnologyUniversity of Natural Resources and Life Sciences, Muthgasse 11, A‐1190ViennaAustria
| |
Collapse
|
9
|
Adlin Jenifer JSC, Michaelbabu M, Eswaramoorthy Thirumalaikumar CL, Jeraldin Nisha SR, Uma G, Citarasu T. Antimicrobial potential of haloalkaliphilic Nocardiopsis sp. AJ1 isolated from solar salterns in India. J Basic Microbiol 2019; 59:288-301. [PMID: 30604885 DOI: 10.1002/jobm.201800252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 09/24/2018] [Accepted: 11/30/2018] [Indexed: 11/10/2022]
Abstract
Antagonistic haloalkaliphilic Nocardiopsis sp. AJ1 (GenBank JX575136.1), isolated and identified from the saline soil of Kovalam solar salterns was able to produce antimicrobial secondary metabolites and effectively suppressed several bacterial and fungal pathogens. The metabolite extracted from ethyl acetate precipitation suppressed the bacterial and fungal pathogens to the range between 2.14 and 20.14 mm and also controlled the shrimp killer virus WSSV by 83% than the control and significantly (p < 0.05) differed. GC-MS analysis revealed that, the ethyl acetate precipitation contains pyrrolo (1,2-A(pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl)-) and actinomycin C2. Non ribosomal peptide synthetase (NRPS) was amplified by PCR with the amplicon size of 750-800 bp length and further predicted the secondary structure by Iterative Threading Assembly Refinement (I-TASSER) bioinformatics approach. I-TASSER prediction helped to find out the secondary, 3-D structure, and ligand binding sites. The top ten modelling concluded that, the NRPS gene is closely similar to surfactin synthesizing gene, surfactin A synthetase C (SRFA-C). The findings revealed that, the active compounds from the secondary metabolites effectively suppressed the pathogenic bacteria, fungi, and virus and useful to develop antimicrobials.
Collapse
Affiliation(s)
| | - Mariavincent Michaelbabu
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| | | | - Selva Raj Jeraldin Nisha
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| | - Ganapathi Uma
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| | - Thavasimuthu Citarasu
- Centre for Marine Science and Technology, Manonmaniam Sundaranar University, Rajakkamangalam, Kanyakumari District, Tamilnadu, India
| |
Collapse
|
10
|
Nouioui I, Carro L, García-López M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Göker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007. [PMID: 30186281 PMCID: PMC6113628 DOI: 10.3389/fmicb.2018.02007] [Citation(s) in RCA: 404] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 08/09/2018] [Indexed: 11/29/2022] Open
Abstract
The application of phylogenetic taxonomic procedures led to improvements in the classification of bacteria assigned to the phylum Actinobacteria but even so there remains a need to further clarify relationships within a taxon that encompasses organisms of agricultural, biotechnological, clinical, and ecological importance. Classification of the morphologically diverse bacteria belonging to this large phylum based on a limited number of features has proved to be difficult, not least when taxonomic decisions rested heavily on interpretation of poorly resolved 16S rRNA gene trees. Here, draft genome sequences of a large collection of actinobacterial type strains were used to infer phylogenetic trees from genome-scale data using principles drawn from phylogenetic systematics. The majority of taxa were found to be monophyletic but several orders, families, and genera, as well as many species and a few subspecies were shown to be in need of revision leading to proposals for the recognition of 2 orders, 10 families, and 17 genera, as well as the transfer of over 100 species to other genera. In addition, emended descriptions are given for many species mainly involving the addition of data on genome size and DNA G+C content, the former can be considered to be a valuable taxonomic marker in actinobacterial systematics. Many of the incongruities detected when the results of the present study were compared with existing classifications had been recognized from 16S rRNA gene trees though whole-genome phylogenies proved to be much better resolved. The few significant incongruities found between 16S/23S rRNA and whole genome trees underline the pitfalls inherent in phylogenies based upon single gene sequences. Similarly good congruence was found between the discontinuous distribution of phenotypic properties and taxa delineated in the phylogenetic trees though diverse non-monophyletic taxa appeared to be based on the use of plesiomorphic character states as diagnostic features.
Collapse
Affiliation(s)
- Imen Nouioui
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Lorena Carro
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Marina García-López
- Department of Microorganisms, Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Jan P. Meier-Kolthoff
- Department of Microorganisms, Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Tanja Woyke
- Department of Energy, Joint Genome Institute, Walnut Creek, CA, United States
| | - Nikos C. Kyrpides
- Department of Energy, Joint Genome Institute, Walnut Creek, CA, United States
| | - Rüdiger Pukall
- Department of Microorganisms, Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Michael Goodfellow
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Markus Göker
- Department of Microorganisms, Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| |
Collapse
|
11
|
Sirota FL, Goh F, Low KN, Yang LK, Crasta SC, Eisenhaber B, Eisenhaber F, Kanagasundaram Y, Ng SB. Isolation and Identification of an Anthracimycin Analogue from Nocardiopsis kunsanensis, a Halophile from a Saltern, by Genomic Mining Strategy. J Genomics 2018; 6:63-73. [PMID: 29805716 PMCID: PMC5970133 DOI: 10.7150/jgen.24368] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 04/25/2018] [Indexed: 11/23/2022] Open
Abstract
Modern medicine is unthinkable without antibiotics; yet, growing issues with microbial drug resistance require intensified search for new active compounds. Natural products generated by Actinobacteria have been a rich source of candidate antibiotics, for example anthracimycin that, so far, is only known to be produced by Streptomyces species. Based on sequence similarity with the respective biosynthetic cluster, we sifted through available microbial genome data with the goal to find alternative anthracimycin-producing organisms. In this work, we report about the prediction and experimental verification of the production of anthracimycin derivatives by Nocardiopsis kunsanensis, a non-Streptomyces actinobacterial microorganism. We discovered N. kunsanensis to predominantly produce a new anthracimycin derivative with methyl group at C-8 and none at C-2, labeled anthracimycin BII-2619, besides a minor amount of anthracimycin. It displays activity against Gram-positive bacteria with similar low level of mammalian cytotoxicity as that of anthracimycin.
Collapse
Affiliation(s)
- Fernanda L Sirota
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Falicia Goh
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Kia-Ngee Low
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Lay-Kien Yang
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Sharon C Crasta
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Birgit Eisenhaber
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Frank Eisenhaber
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore.,School of Computer Engineering, Nanyang Technological University (NTU), 50 Nanyang Drive, Singapore 637553, Republic of Singapore
| | - Yoganathan Kanagasundaram
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| | - Siew Bee Ng
- Bioinformatics Institute, Agency for Science, Technology and Research (ASTAR), 30 Biopolis Street, #07-01 Matrix, Singapore 138671, Republic of Singapore
| |
Collapse
|
12
|
Conde-Martínez N, Acosta-González A, Díaz LE, Tello E. Use of a mixed culture strategy to isolate halophilic bacteria with antibacterial and cytotoxic activity from the Manaure solar saltern in Colombia. BMC Microbiol 2017; 17:230. [PMID: 29216824 PMCID: PMC5721385 DOI: 10.1186/s12866-017-1136-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 11/27/2017] [Indexed: 12/04/2022] Open
Abstract
Background Water evaporation in solar salterns creates salinity gradients that promote the adaptation of microbial species to different salinities. This competitive habitat challenges the metabolic capabilities of microorganisms and promotes alterations in their production of secondary metabolites. Thus, solar salterns are a potentially important source of new natural products. In Colombia, the most important and representative solar saltern is located in Manaure (La Guajira) in the north of Colombia. The aim of this study was to develop an alternative screening strategy to select halophilic bacteria as producers of bioactive compounds from mixed microbial cultures rather than individual environmental isolates. Brine and sediment samples from different ponds (across a salinity gradient) were inoculated in seven different culture media to grow bacteria and archaea, allowing for a total of 40 different mixed cultures. An organic extract from each mixed culture was obtained and tested against multidrug resistant pathogens, including Klebsiella pneumoniae, vancomycin-resistant Enterococcus faecium, methicillin-resistant Staphylococcus aureus and Bacillus subtilis. In addition, the extracts were tested against two human cancer cell lines, cervical adenocarcinoma (SiHa) and lung carcinoma (A-549). Results Twenty-four of the forty extracts from mixed cultures obtained from brine and sediment samples from the Manaure solar saltern showed antibacterial activity against Bacillus subtilis. Two extracts, referred to as A1SM3–29 and A1SM3–36, were also active against a methicillin-resistant Staphylococcus aureus, with the latter extract also showing slight cytotoxic activity against the assayed human lung cancer cell line. From this mixed culture, nine isolates were cultivated, and their extracts were tested against the same pathogens, resulting in the identification of a Vibrio sp. strain (A1SM3–36-8) with antimicrobial activity that was similar to that observed for the mixed culture extract. The extract of this strain was subjected to a bioautography assay, and 3 different fractions exhibited antibacterial activity against methicillin-resistant Staphylococcus aureus. Based on the amount obtained for each fraction, F3 was selected to isolate and identify its metabolites. The major compound was identified by NMR and HRMS as 13-cis-docosenamide, an amide that has been previously reported to be an antimicrobial and cytotoxic compound. Conclusions Our results shows the utility of our strategy in detecting bioactive molecules in initial mixed cultures by biological assays, resulting in the isolation and characterization of Vibrio sp. A1SM3–36-8, a halophilic strain with great antibacterial and cytotoxic potential. Electronic supplementary material The online version of this article (10.1186/s12866-017-1136-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Natalia Conde-Martínez
- Bioscience Doctoral Program, Grupo de Investigación en Bioprospección, Faculty of Engineering, Universidad de La Sabana, Campus Puente del Común, Km 7, Autopista Norte de Bogotá, Chía, Colombia
| | - Alejandro Acosta-González
- Bioscience Doctoral Program, Grupo de Investigación en Bioprospección, Faculty of Engineering, Universidad de La Sabana, Campus Puente del Común, Km 7, Autopista Norte de Bogotá, Chía, Colombia
| | - Luis E Díaz
- Bioscience Doctoral Program, Grupo de Investigación en Bioprospección, Faculty of Engineering, Universidad de La Sabana, Campus Puente del Común, Km 7, Autopista Norte de Bogotá, Chía, Colombia
| | - Edisson Tello
- Bioscience Doctoral Program, Grupo de Investigación en Bioprospección, Faculty of Engineering, Universidad de La Sabana, Campus Puente del Común, Km 7, Autopista Norte de Bogotá, Chía, Colombia.
| |
Collapse
|
13
|
Frikha Dammak D, Zarai Z, Najah S, Abdennabi R, Belbahri L, Rateb ME, Mejdoub H, Maalej S. Antagonistic Properties of Some Halophilic Thermoactinomycetes Isolated from Superficial Sediment of a Solar Saltern and Production of Cyclic Antimicrobial Peptides by the Novel Isolate Paludifilum halophilum. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1205258. [PMID: 28819625 PMCID: PMC5551467 DOI: 10.1155/2017/1205258] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/18/2017] [Indexed: 02/07/2023]
Abstract
This study has focused on the isolation of twenty-three halophilic actinomycetes from two ponds of different salinity and the evaluation of their ability to exert an antimicrobial activity against both their competitors and several other pathogens. From the 23 isolates, 18 strains showed antagonistic activity, while 19 showed activities against one or more of the seven pathogen strains tested. Six strains exhibited consistent antibacterial activity against Gram-negative and Gram-positive pathogens characterized at the physiological and molecular levels. These strains shared only 94-95% 16S rRNA sequence identity with the closely related species of the Thermoactinomycetaceae family. Among them, the potent strain SMBg3 was further characterized and assigned to a new genus in the family for which the name Paludifilum halophilum (DSM 102817T) is proposed. Sequential extraction of the antimicrobial compounds with ethyl acetate revealed that the crude extract from SMBg3 strain had inhibitory effect on the growth of the plant pathogen Agrobacterium tumefaciens and the human pathogens Staphylococcus aureus, Salmonella enterica, Escherichia coli, and Pseudomonas aeruginosa. Based on the HRESI-MS spectral data, the cyclic lipopeptide Gramicidin S and four cyclic dipeptides (CDPs) named cyclo(L-4-OH-Pro-L-Leu), cyclo(L-Tyr-L-Pro), cyclo(L-Phe-L-Pro), and cyclo(L-Leu-L-Pro) were detected in the fermentation broth of Paludifilum halophilum. To our knowledge, this is the first report on the isolation of these compounds from members of the Thermoactinomycetaceae family.
Collapse
Affiliation(s)
- Donyez Frikha Dammak
- Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000 Sfax, Tunisia
| | - Ziad Zarai
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, ENIS, BPW, 1173 Sfax, Tunisia
| | - Soumaya Najah
- Institut de Biologie Integrative, UMR 9198, Université Paris-Sud, Bat 400, 91405 Orsay Cedex, France
| | - Rayed Abdennabi
- Laboratory of Soil Biology, University of Neuchatel, 11 Rue Emile Argand, 2000 Neuchatel, Switzerland
| | - Lassaad Belbahri
- Laboratory of Soil Biology, University of Neuchatel, 11 Rue Emile Argand, 2000 Neuchatel, Switzerland
| | - Mostafa E. Rateb
- School of Science & Sport, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Hafedh Mejdoub
- Laboratoire des Biotechnologies Végétales Appliquées à l'Amélioration des Cultures, FSS, Université de Sfax, BP 1171, 3000 Sfax, Tunisia
| | - Sami Maalej
- Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000 Sfax, Tunisia
| |
Collapse
|
14
|
Jacob J, Rajendran RU, Priya SH, Purushothaman J, Saraswathy Amma DKBN. Enhanced antibacterial metabolite production through the application of statistical methodologies by a Streptomyces nogalater NIIST A30 isolated from Western Ghats forest soil. PLoS One 2017; 12:e0175919. [PMID: 28437452 PMCID: PMC5402949 DOI: 10.1371/journal.pone.0175919] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 03/14/2017] [Indexed: 11/22/2022] Open
Abstract
Streptomyces strains isolated from Nelliyampathy forest soil of Western Ghats, Kerala, India were evaluated for their antibacterial efficacy against two indicator pathogenic bacteria (Escherichia coli and Staphylococcus aureus). Among 140 strains tested, sixteen recorded potent antibacterial properties and were further screened against eleven bacterial pathogens. A strain identified as Streptomyces nogalater and designated as NIIST A30 exhibited maximum inhibition against all the test pathogens. Among the eight fermentation media tested, inorganic salts starch broth recorded the best for antibacterial production. The ethyl acetate crude extract exhibited antioxidant properties with IC50 value of 30 μg/mL and had no cytotoxicity towards L6, H9c2 and RAW 264.7 cell lines up to a concentration of 50 μg/mL. Maximum metabolite production was achieved in pH 7.0 at 35°C after 7 days incubation. The significant media components for maximum metabolite production were optimized through response surface methodology employing Plackett-Burman and Box-Behnken designs. The composition of the final optimized medium was soluble starch, 14.97g; (NH4)2SO4, 2.89g; K2HPO4, 2.07g; MgSO4.7H2O, 1g; NaCl, 1g, CaCO3, 2g; FeSO4.7H2O, 1mg; MnCl2.7H2O, 1mg; and ZnSO4.7H2O, 1mg per litre of distilled water. The optimization resulted an antibacterial activity of 28±1.5mm against S. epidermidis which was in close accordance with the predicted value of 30 mm. It is also evident from the result that an increase of 86.66% antibacterial production was recorded in optimized media. The chosen method was economical, efficient and useful for future antibacterial drug discovery from a broad spectrum metabolite producer like Streptomyces nogalater NIIST A30.
Collapse
Affiliation(s)
- Jubi Jacob
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR),CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Reshma Uma Rajendran
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Syama Hari Priya
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Jayamurthy Purushothaman
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR),CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Dileep Kumar Bhaskaran Nair Saraswathy Amma
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR),CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- * E-mail:
| |
Collapse
|
15
|
Lahoum A, Verheecke-Vaessen C, Bouras N, Sabaou N, Mathieu F. Taxonomy of mycelial actinobacteria isolated from Saharan soils and their efficiency to reduce aflatoxin B1 content in a solid-based medium. ANN MICROBIOL 2017. [DOI: 10.1007/s13213-017-1253-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
16
|
Frikha-Dammak D, Fardeau ML, Cayol JL, Ben Fguira-Fourati L, Najeh S, Ollivier B, Maalej S. Paludifilum halophilum gen. nov., sp. nov., a thermoactinomycete isolated from superficial sediment of a solar saltern. Int J Syst Evol Microbiol 2016; 66:5371-5378. [PMID: 27671055 DOI: 10.1099/ijsem.0.001523] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel filamentous, halophilic, thermotolerant bacterium, strain SMBg3T was isolated from superficial sediment of a solar saltern in Sfax, Tunisia. The isolate is Gram-staining-positive, aerobic, catalase- and oxidase-positive. Optimum growth occurred at 40-45 °C, with 10 % (w/v) NaCl and at pH 8.0-9.0. Long and well developed aerial and substrate mycelia, with long chains of fluorescent and circular spores, were observed on all tested media. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain SMBg3T belongs to an independent phylogenetic lineage of the family Thermoactinomycetaceae and shows a gene sequence similarity of 94 % with Desmospora activa DSM 45169T 94.2 % with Kroppenstedtia eburnea DSM 45196T, 94.3 % with Kroppenstedtia guangzhouensis KCTC 29149T, 94.3 % with Melghirimyces algeriensisDSM 45474T and 94.5 % with Salinithrix halophila CECT 8506T. The predominant menaquinone is MK-7, but MK-8 and some minor unidentified components are also present in trace amounts. The major cellular fatty acids are anteiso-C15 : 0, iso-C15 : 0 and iso-C17 : 0. In addition to four major polar lipids identified as phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol and phosphatidylmethylethanolamine, five minor unknown lipids were detected in cell membranes. The DNA G+C content of strain SMBg3T is 51.2 mol%. Strain SMBg3T is distinct from recognized genera of the family Thermoactinomycetaceae by morphological, biochemical and chemotaxonomic characteristics. On the basis of physiological and phylogenetic data, strain SMBg3T represents a novel species of a new genus in the family Thermoactinomycetaceae for which the name Paludifilum halophilum gen. nov., sp. nov. is proposed. The type strain of the type species is SMBg3T (=DSM 102817T=CCUG 68698T).
Collapse
Affiliation(s)
- Donyez Frikha-Dammak
- Université de Sfax, Faculté des Sciences de Sfax, Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), BP 1171, 3000 Sfax, Tunisia
| | - Marie-Laure Fardeau
- Aix-Marseille Université, IRD, Université du Sud Toulon-Var, CNRS/INSU, MIO, UM 110, 13288, Marseille, Cedex 09, France
| | - Jean-Luc Cayol
- Aix-Marseille Université, IRD, Université du Sud Toulon-Var, CNRS/INSU, MIO, UM 110, 13288, Marseille, Cedex 09, France
| | - Lilia Ben Fguira-Fourati
- Université de Sfax, Faculté des Sciences de Sfax, Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), BP 1171, 3000 Sfax, Tunisia
| | - Soumaya Najeh
- Institute for Integrative Biology of the Cell, UMR 9198 - Université Paris-Sud Bat 400, 91405 Orsay Cedex, France
| | - Bernard Ollivier
- Aix-Marseille Université, IRD, Université du Sud Toulon-Var, CNRS/INSU, MIO, UM 110, 13288, Marseille, Cedex 09, France
| | - Sami Maalej
- Université de Sfax, Faculté des Sciences de Sfax, Unité Biodiversité et Ecosystèmes Aquatiques Environnementaux (UR/11ES/72), BP 1171, 3000 Sfax, Tunisia
| |
Collapse
|
17
|
Muangham S, Suksaard P, Mingma R, Matsumoto A, Takahashi Y, Duangmal K. Nocardiopsissediminis sp. nov., isolated from mangrove sediment. Int J Syst Evol Microbiol 2016; 66:3835-3840. [PMID: 27381319 DOI: 10.1099/ijsem.0.001273] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A filamentous actinomycete, designated strain 1SS5-02T, was isolated from mangrove sediment collected from Ranong province, Thailand. The strain formed aerial and substrate mycelia composed of long, branched hyphae. Aerial mycelia differentiated into non-motile, rod-shaped spores. The organism contained meso-diaminopimelic acid and no diagnostic sugars in whole-cell hydrolysates. The predominant menaquinones were MK-11(H4), MK-11(H6) and MK-11(H8). Polar lipids comprised phosphatidylcholine, phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, two unidentified phospholipids and four unidentified lipids. The major fatty acids were iso-C16 : 0, C18 : 1ω9c, 10-methyl C18 : 0 and anteiso-C17 : 0. The G+C content of the genomic DNA was 73.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain 1SS5-02T belonged to the genus Nocardiopsis. The strain showed the highest degree of 16S rRNA gene sequence similarity with 'Nocardiopsis mangrovei' HA11166 (97.9 %) and Nocardiopsis trehalosi VKM Ac-942T (97.8 %). However, strain 1SS5-02T could be distinguished from its nearest phylogenetic relatives in the genus Nocardiopsis on the basis of DNA-DNA relatedness values and the combination of phenotypic properties. On the basis of polyphasic taxonomy, strain 1SS5-02T is considered to represent a novel species of the genus Nocardiopsis, for which the name Nocardiopsis sediminis sp. nov. is proposed. The type strain is 1SS5-02T (=BCC 75410T=NBRC 110934T).
Collapse
Affiliation(s)
- Supattra Muangham
- Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Paweena Suksaard
- Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Ratchanee Mingma
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Atsuko Matsumoto
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Yōko Takahashi
- Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Kannika Duangmal
- Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Chatuchak, Bangkok 10900, Thailand.,Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| |
Collapse
|
18
|
Implication of PKS type I gene and chromatographic strategy for the biodiscovery of antimicrobial polyketide metabolites from endosymbiotic Nocardiopsis prasina CLA68. Naturwissenschaften 2016; 103:45. [DOI: 10.1007/s00114-016-1370-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 04/26/2016] [Accepted: 04/27/2016] [Indexed: 12/21/2022]
|
19
|
Pan HQ, Zhang DF, Li L, Jiang Z, Cheng J, Zhang YG, Wang HF, Hu JC, Li WJ. Nocardiopsis oceani sp. nov. and Nocardiopsis nanhaiensis sp. nov., actinomycetes isolated from marine sediment of the South China Sea. Int J Syst Evol Microbiol 2016; 65:3384-3391. [PMID: 26297579 DOI: 10.1099/ijsem.0.000425] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two actinomycete strains, designated 10A08AT and 10A08BT, were isolated from marine sediment samples of the South China Sea and their taxonomic positions were determined by a polyphasic approach. The two Gram-stain-positive, aerobic strains produced branched substrate mycelium and aerial hyphae, and no diffusible pigment was produced in the media tested. At maturity, spore chains were formed on aerial hyphae and all mycelium fragmented with age. Whole-cell hydrolysates of both strains contained meso-diaminopimelic acid and no diagnostic sugars. Their predominant menaquinones (>10 %) were MK-9(H4), MK-9(H6) and MK-10(H6) for strain 10A08AT and MK-9(H4), MK-9(H6), MK-10(H4) and MK-10(H6) for strain 10A08BT. The polar lipids detected from the two strains were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine and unknown phosphoglycolipids and phospholipids. The major fatty acids (>10 %) of both strains were iso-C16 : 0 and summed feature 4 (iso-C17 : 1 I and/or anteiso-C17 : 1 B). The genomic DNA G+C contents of strains 10A08AT and 10A08BT were 70.9 and 71.6 mol%, respectively. On the basis of 16S rRNA gene sequence similarities, the two strains were shown to be most closely related to species of the genus Nocardiopsis. DNA–DNA hybridization relatedness values of < 70 % between these two isolates and their closest neighbour, Nocardiopsis terrae YIM 90022T, and between the two strains supported the conclusion that they represent two novel species. Based on phylogenetic analysis and phenotypic and genotypic data, it is concluded that the two isolates belong to the genus Nocardiopsis, and the names Nocardiopsis oceani sp. nov. (type strain 10A08AT = DSM 45931T = BCRC 16951T) and Nocardiopsis nanhaiensis sp. nov. (type strain 10A08BT = CGMCC 47227T = BCRC 16952T) are proposed.
Collapse
Affiliation(s)
- Hua-Qi Pan
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Dao-Feng Zhang
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, College of Ecology and Evolution, Sun Yat-Sen University, Guangzhou 510275, PR China.,Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
| | - Li Li
- Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürumqi 830011, PR China
| | - Zhao Jiang
- Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
| | - Juan Cheng
- Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
| | - Yong-Guang Zhang
- Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürumqi 830011, PR China
| | - Hong-Fei Wang
- Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürumqi 830011, PR China
| | - Jiang-Chun Hu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Wen-Jun Li
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, College of Ecology and Evolution, Sun Yat-Sen University, Guangzhou 510275, PR China.,Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China.,Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürumqi 830011, PR China
| |
Collapse
|
20
|
Affiliation(s)
- Ming-Wei Sun
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan, PR China
| | - Zhi-Xing Guo
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan, PR China
| | - Chun-Hua Lu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan, PR China
| |
Collapse
|
21
|
Bennur T, Ravi Kumar A, Zinjarde S, Javdekar V. Nocardiopsis
species: a potential source of bioactive compounds. J Appl Microbiol 2015; 120:1-16. [DOI: 10.1111/jam.12950] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 06/16/2015] [Accepted: 07/07/2015] [Indexed: 12/12/2022]
Affiliation(s)
- T. Bennur
- Institute of Bioinformatics and Biotechnology; Savitribai Phule Pune University; Pune India
| | - A. Ravi Kumar
- Institute of Bioinformatics and Biotechnology; Savitribai Phule Pune University; Pune India
| | - S.S. Zinjarde
- Institute of Bioinformatics and Biotechnology; Savitribai Phule Pune University; Pune India
| | - V. Javdekar
- Department of Biotechnology; Abasaheb Garware College; Pune India
| |
Collapse
|
22
|
Bounagaea algeriensis gen. nov., sp. nov., an extremely halophilic actinobacterium isolated from a Saharan soil of Algeria. Antonie van Leeuwenhoek 2015; 108:473-82. [PMID: 26050246 DOI: 10.1007/s10482-015-0500-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 06/02/2015] [Indexed: 01/09/2023]
Abstract
A novel halophilic actinobacterium strain, designated H8(T), was isolated from a Saharan soil sample collected in El-Goléa, South Algeria. Strain H8(T) was identified as representing a new genus using a polyphasic taxonomic approach. Phylogenetic analysis revealed that strain H8(T) shared the highest degree of 16S rRNA gene sequence similarity with 'Mzabimyces algeriensis' DSM 46680(T) (93.0 %), Saccharopolyspora ghardaiensis DSM 45606(T) (91.2 %), Halopolyspora alba DSM 45976(T) (90.8 %) and Actinopolyspora mortivallis DSM 44261(T) (90.0 %). The strain was found to grow optimally at 28-35 °C, at pH 6.0-7.0, and in the presence of 15-25 % (w/v) NaCl. The substrate mycelium was observed to be well developed and fragmented in liquid medium and on solid medium. The aerial mycelium was observed to be moderately abundant and to form long chains with non-motile, smooth-surfaced and ovoid or spherical spores at maturity. The cell wall of strain H8(T) was found to contain meso-diaminopimelic acid. The whole-cell hydrolysates were found to mainly contain arabinose and galactose. The diagnostic phospholipid detected was phosphatidylcholine, and MK-9(H4), MK-9(H2) and MK-10(H2) were found to be the predominant menaquinones. The major cellular fatty acids were determined to be anteiso-C17:0 and iso-C15:0. The genomic DNA G+C content of strain H8(T) was determined to be 71.3 mol%. The genotypic and phenotypic data showed that the strain represents a novel genus and species, for which the name Bounagaea algeriensis gen. nov., sp. nov. is proposed, with the type strain H8(T) (=DSM 45966(T) = CECT 8470(T)).
Collapse
|
23
|
Plant-growth-promoting potential of endosymbiotic actinobacteria isolated from sand truffles (Terfezia leonis Tul.) of the Algerian Sahara. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1085-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
24
|
Bennur T, Kumar AR, Zinjarde S, Javdekar V. Nocardiopsis species: Incidence, ecological roles and adaptations. Microbiol Res 2015; 174:33-47. [PMID: 25946327 DOI: 10.1016/j.micres.2015.03.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 12/23/2022]
Abstract
Members of the genus Nocardiopsis are ecologically versatile and biotechnologically important. They produce a variety of bioactive compounds such as antimicrobial agents, anticancer substances, tumor inducers, toxins and immunomodulators. They also secrete novel extracellular enzymes such as amylases, chitinases, cellulases, β-glucanases, inulinases, xylanases and proteases. Nocardiopsis species are aerobic, Gram-positive, non-acid-fast, catalase-positive actinomycetes with nocardioform substrate mycelia and their aerial mycelia bear long chains of spores. Their DNA possesses high contents of guanine and cytosine. There is a marked variation in properties of the isolates obtained from different ecological niches and their products. An important feature of several species is their halophilic or halotolerant nature. They are associated with a variety of marine and terrestrial biological forms wherein they produce antibiotics and toxins that help their hosts in evading pathogens and predators. Two Nocardiopsis species, namely, N. dassonvillei and N. synnemataformans (among the thirty nine reported ones) are opportunistic human pathogens and cause mycetoma, suppurative infections and abscesses. Nocardiopsis species are present in some plants (as endophytes or surface microflora) and their rhizospheres. Here, they are reported to produce enzymes such as α-amylases and antifungal agents that are effective in warding-off plant pathogens. They are prevalent as free-living entities in terrestrial locales, indoor locations, marine ecosystems and hypersaline habitats on account of their salt-, alkali- and desiccation-resistant behavior. In such natural locations, Nocardiopsis species mainly help in recycling organic compounds. Survival under these diverse conditions is mediated by the production of extracellular enzymes, antibiotics, surfactants, and the accumulation of compatible solutes. The accommodative genomic features of Nocardiopsis species support their existence under the diverse conditions where they prevail.
Collapse
Affiliation(s)
- Tahsin Bennur
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411007, India
| | - Ameeta Ravi Kumar
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411007, India
| | - Smita Zinjarde
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411007, India.
| | - Vaishali Javdekar
- Department of Biotechnology, Abasaheb Garware College, Pune 411004, India.
| |
Collapse
|
25
|
Diversity and antagonistic properties of culturable halophilic actinobacteria in soils of two arid regions of septentrional Sahara: M’zab and Zibans. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1065-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|
26
|
Rashad FM, Fathy HM, El-Zayat AS, Elghonaimy AM. Isolation and characterization of multifunctional Streptomyces species with antimicrobial, nematicidal and phytohormone activities from marine environments in Egypt. Microbiol Res 2015; 175:34-47. [PMID: 25805507 DOI: 10.1016/j.micres.2015.03.002] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 02/25/2015] [Accepted: 03/02/2015] [Indexed: 11/16/2022]
Abstract
Different strategies have been employed for selective isolation of Streptomycetes from 20 marine samples varied in their biological nature. The recovery of Streptomycetes isolates (112) was influenced preferentially by different strategies; sediment samples were the best source of potential candidate Streptomycetes. All isolates exhibited antimicrobial activities with variable spectrum; the most promising isolates (31) were phenotypically characterized and identified as Streptomyces sp.; these isolates exhibited variable capacity for secretion of numerous hydrolytic enzymes such as catalase, protease, amylase, lipase, lecithinase, asparaginase, chitinase and pectinase. All the strains resisted both penicillin and streptomycin, 29 were sensitive to neomycin; the majority of strains (25) showed multiple antibiotic resistance index greater than 0.2; 23, 22 and 13 degraded the shrimp shell, chicken feather and corn cob, respectively, producing bioactive substance(s) which indicates their diversity and their ecological role in the marine ecosystem. At least 28 strains exhibited nematicidal activity in vitro and in vivo against root-knot nematode and supported plant growth. In vitro, the assessed Streptomyces species exhibited the ability to produce gibberellic acid, indole acetic acid, abscisic acid, kinetin and benzyladenine. Except for indole acetic acid, this is the first report concerning the ability of marine Streptomyces to produce such phytohormones and the use of shrimp shell waste as a mono component medium for production of phytohormones. The study is efficacious in selecting effective biodiverse strains of marine Streptomyces that may work under diverse agro-ecological conditions as a useful element in plant nutrition and as biocontrol agents involved in integrated management programs.
Collapse
Affiliation(s)
- Ferial M Rashad
- Department of Microbiology, Faculty of Agriculture, Cairo University, Giza 12613, Egypt.
| | - Hayam M Fathy
- Department of Microbiology, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Ayatollah S El-Zayat
- Department of Microbiology, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Ahlam M Elghonaimy
- Department of Plant Protection, Nematology Unit, Dessert Research Center, Cairo, Egypt
| |
Collapse
|
27
|
Saker R, Bouras N, Meklat A, Zitouni A, Schumann P, Spröer C, Sabaou N, Klenk HP. Prauserella isguenensis sp. nov., a halophilic actinomycete isolated from desert soil. Int J Syst Evol Microbiol 2015; 65:1598-1603. [PMID: 25713039 DOI: 10.1099/ijs.0.000145] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two actinomycete strains, designated H225(T) and H137, were isolated from two soil samples collected from the arid region of Ahbas at Béni-Isguen (Mzab), located in the Algerian Sahara. Phylogenetic analyses based on 16S rRNA gene sequences indicated that the novel strains should be assigned to the genus Prauserella of the family Pseudonocardiaceae , and they were therefore subjected to a polyphasic taxonomic study. These two strains contained meso-diaminopimelic acid as the diagnostic diamino acid and arabinose and galactose as major whole-cell sugars. The diagnostic phospholipid was phosphatidylethanolamine. The predominant menaquinone was MK-9(H4), and the major fatty acid was iso-C16 : 0. DNA-DNA hybridization values between strain H225(T) and its closest phylogenetic neighbours, namely Prauserella flava DSM 45265(T), Prauserella alba DSM 44590(T), Prauserella aidingensis DSM 45266(T), Prauserella salsuginis DSM 45264(T) and Prauserella sediminis DSM 45267(T), were clearly below the 70% threshold used for species delineation. The genomic DNA G+C content of strains H225(T) and H137 was 70.4 mol%. On the basis of phenotypic and genotypic data, strains H225(T) and H137(T) are considered to represent a novel species of the genus Prauserella , for which the name Prauserella isguenensis sp. nov. is proposed. The type strain is H225(T) ( =DSM 46664(T) = CECT 8577(T)).
Collapse
Affiliation(s)
- Rafika Saker
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure, Kouba, Alger, Algeria
| | - Noureddine Bouras
- Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaïa, BP 455, Ghardaïa 47000, Algeria.,Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure, Kouba, Alger, Algeria
| | - Atika Meklat
- Faculté des Sciences de la Nature et de la Vie, Département de Biologie, Université Saâd Dahleb, Blida, Algeria.,Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure, Kouba, Alger, Algeria
| | - Abdelghani Zitouni
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure, Kouba, Alger, Algeria
| | - Peter Schumann
- DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Nasserdine Sabaou
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure, Kouba, Alger, Algeria
| | - Hans-Peter Klenk
- DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| |
Collapse
|
28
|
Biodiversity of Halophilic and Halotolerant Actinobacteria. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2015. [DOI: 10.1007/978-3-319-14595-2_1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
29
|
Guo L, Tuo L, Habden X, Zhang Y, Liu J, Jiang Z, Liu S, Dilbar T, Sun C. Allosalinactinospora lopnorensis gen. nov., sp. nov., a new member of the family Nocardiopsaceae isolated from soil. Int J Syst Evol Microbiol 2015; 65:206-213. [DOI: 10.1099/ijs.0.055160-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel actinomycete, designated strain CA15-2T, was isolated from a soil sample collected from the rhizosphere of tamarisk in the Lop Nor region, Xinjiang, China, and was characterized by using a polyphasic taxonomic approach. Optimal growth occurred at 37 °C and pH 7.5–8.0 and with 5 % (w/v) NaCl. Strain CA15-2T formed white to pale-yellow branched substrate mycelium without fragmentation and sparse aerial mycelium with wavelike curves. Whole-cell hydrolysates of the isolate contained meso-diaminopimelic acid as the diagnostic diamino acid of the cell wall but no diagnostic sugars. The polar lipids comprised diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, phosphatidylmethylethanolamine, phosphatidylethanolamine, one unidentified glycolipid, one unidentified phospholipid and other unidentified lipids. MK-9(H8), MK-10(H8) and MK-10(H6) were the predominant menaquinones. The major fatty acids were iso-C16 : 0 and C16 : 0. The G+C content of the genomic DNA was 69.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain CA15-2T formed a distinct subclade in the family
Nocardiopsaceae
, with less than 95 % 16S rRNA gene sequence similarity to all known members of the family
Nocardiopsaceae
. On the basis of the evidence from our polyphasic study, a novel genus, Allosalinactinospora gen. nov., is proposed, with the type species Allosalinactinospora lopnorensis gen. nov., sp. nov. The type strain of Allosalinactinospora lopnorensis is strain CA15-2T ( = DSM 45697T = CGMCC 4.7074T).
Collapse
Affiliation(s)
- Lin Guo
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Li Tuo
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Xugela Habden
- College of Life Science and Chemistry, Xinjiang Normal University, Urumchi 830054, PR China
| | - Yuqin Zhang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Jiameng Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Zhongke Jiang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Shaowei Liu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| | - Tohty Dilbar
- College of Life Science and Chemistry, Xinjiang Normal University, Urumchi 830054, PR China
| | - Chenghang Sun
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, PR China
| |
Collapse
|
30
|
Hamedi J, Mohammadipanah F, Panahi HKS. Biotechnological Exploitation of Actinobacterial Members. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2015. [DOI: 10.1007/978-3-319-14595-2_3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
31
|
Antimicrobial and Biocatalytic Potential of Haloalkaliphilic Actinobacteria. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2015. [DOI: 10.1007/978-3-319-14595-2_2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
32
|
Saker R, Bouras N, Meklat A, Zitouni A, Schumann P, Spröer C, Klenk HP, Sabaou N. Actinopolyspora biskrensis sp. nov., a Novel Halophilic Actinomycete Isolated from Northern Sahara. Curr Microbiol 2014; 70:423-8. [DOI: 10.1007/s00284-014-0740-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 10/29/2014] [Indexed: 10/24/2022]
|
33
|
Bouras N, Meklat A, Zitouni A, Mathieu F, Schumann P, Spröer C, Sabaou N, Klenk HP. Nocardiopsis algeriensis sp. nov., an alkalitolerant actinomycete isolated from Saharan soil. Antonie van Leeuwenhoek 2014; 107:313-20. [PMID: 25380720 DOI: 10.1007/s10482-014-0329-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 11/03/2014] [Indexed: 11/30/2022]
Abstract
An alkalitolerant actinomycete strain, designated B32(T), was isolated from a Saharan soil sample collected from Adrar province (South of Algeria), and then investigated using a polyphasic taxonomic approach. The strain was observed to produce short chains of spores on the dichotomous branched aerial mycelium and formed a fragmented substrate mycelium. The optimum NaCl concentration for growth was found to be 0-5 % (w/v) and the optimum growth temperature and pH were found to be 25-35 °C and 7.0-10.0 °C, respectively. The diagnostic diamino acid in the cell-wall peptidoglycan was identified as meso-diaminopimelic acid. The predominant menaquinones of strain B32(T) were identified as MK-10 (H4) and MK-11 (H4). The major fatty acids were found to be iso-C16:0 and anteiso-C15:0. The diagnostic phospholipids detected were phosphatidylcholine, phosphatidylmethylethanolamine, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The chemotaxonomic properties of strain B32(T) are consistent with those shared by members of the genus Nocardiopsis. 16S rRNA gene sequence analysis indicated that strain B32(T) is most closely related to Nocardiopsis alba DSM 43377(T) (98.7 %), Nocardiopsis lucentensis DSM 44048(T) (98.6 %), Nocardiopsis aegyptia DSM 44442(T) (98.6 %), Nocardiopsis sinuspersici HM6(T) (98.6 %) and Nocardiopsis arvandica HM7(T) (98.5 %). However, the DNA-DNA relatedness values between strain B32(T) and the closely related type strains were 17.9, 14.6, 31.1, 27.1 and 14.1 %, respectively. Based on the combined genotypic and phenotypic evidence, it is proposed that strain B32(T) should be classified as representative of a novel species, for which the name Nocardiopsis algeriensis sp. nov. is proposed. The type strain is B32(T) (=DSM 45462(T) = CECT 8712(T)).
Collapse
Affiliation(s)
- Noureddine Bouras
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Bennur T, Kumar AR, Zinjarde S, Javdekar V. Nocardiopsis species as potential sources of diverse and novel extracellular enzymes. Appl Microbiol Biotechnol 2014; 98:9173-85. [PMID: 25269602 DOI: 10.1007/s00253-014-6111-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/18/2014] [Accepted: 09/19/2014] [Indexed: 01/10/2023]
Abstract
Members of the genus Nocardiopsis are generally encountered in locations that are inherently extreme. They are present in frozen soils, desert sand, compost, saline or hypersaline habitats (marine systems, salterns and soils) and alkaline places (slag dumps, lake soils and sediments). In order to survive under these severe conditions, they produce novel and diverse enzymes that allow them to utilize the available nutrients and to thrive. The members of this genus are multifaceted and release an assortment of extracellular hydrolytic enzymes. They produce enzymes that are cold-adapted (α-amylases), thermotolerant (α-amylases and xylanases), thermoalkalotolerant (cellulases, β-1,3-glucanases), alkali-tolerant thermostable (inulinases), acid-stable (keratinase) and alkalophilic (serine proteases). Some of the enzymes derived from Nocardiopsis species act on insoluble polymers such as glucans (pachyman and curdlan), keratin (feathers and prion proteins) and polyhydroxyalkanoates. Extreme tolerance exhibited by proteases has been attributed to the presence of some amino acids (Asn and Pro) in loop structures, relocation of multiple salt bridges to outer regions of the protein or the presence of a distinct polyproline II helix. The range of novel enzymes is projected to increase in the forthcoming years, as new isolates are being continually reported, and the development of processes involving such enzymes is envisaged in the future.
Collapse
Affiliation(s)
- Tahsin Bennur
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune, 411007, India
| | | | | | | |
Collapse
|
35
|
Saker R, Bouras N, Zitouni A, Ghoul M, Rohde M, Schumann P, Spröer C, Sabaou N, Klenk HP. Mzabimyces algeriensis gen. nov., sp. nov., a halophilic filamentous actinobacterium isolated from a Saharan soil, and proposal of Mzabimycetaceae fam. nov. Antonie Van Leeuwenhoek 2014; 106:1021-30. [PMID: 25186951 DOI: 10.1007/s10482-014-0271-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 08/26/2014] [Indexed: 10/24/2022]
Abstract
Three halophilic mycelium-forming actinobacteria, strains H195(T), H150 and H151, were isolated from a Saharan soil sample collected from Béni-isguen in the Mzab region (Ghardaïa, South of Algeria) and subjected to a polyphasic taxonomic characterisation. These strains were observed to show an aerial mycelium differentiated into coccoid spore chains and fragmented substrate mycelium. Comparative analysis of the 16S rRNA gene sequences revealed that the highest sequence similarities were to Saccharopolyspora qijiaojingensis YIM 91168(T) (92.02 % to H195(T)). Phylogenetic analyses showed that the strains H195(T), H150 and H151 represent a distinct phylogenetic lineage. The cell-wall hydrolysate was found to contain meso-diaminopimelic acid, and the diagnostic whole-cell sugars were identified as arabinose and galactose. The major cellular fatty acids were identified as iso-C15:0, iso-C16:0, iso-C17:0 and anteiso-C17:0. The diagnostic phospholipid detected was phosphatidylcholine and MK-9 (H4) was found to be the predominant menaquinone. The genomic DNA G+C content of strain H195(T) was 68.2 mol%. On the basis of its phenotypic features and phylogenetic position, we propose that strain H195(T) represents a novel genus and species, Mzabimyces algeriensis gen. nov., sp. nov., within a new family, Mzabimycetaceae fam. nov. The type strain of M. algeriensis is strain H195(T) (=DSM 46680(T) = MTCC 12101(T)).
Collapse
MESH Headings
- Actinobacteria/classification
- Actinobacteria/cytology
- Actinobacteria/genetics
- Actinobacteria/isolation & purification
- Africa, Northern
- Algeria
- Bacterial Typing Techniques
- Base Composition
- Carbohydrates/analysis
- Cell Wall/chemistry
- Cluster Analysis
- Cytosol/chemistry
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Diaminopimelic Acid/analysis
- Fatty Acids/analysis
- Microscopy, Electron, Scanning
- Molecular Sequence Data
- Phospholipids/analysis
- Phylogeny
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Soil Microbiology
- Vitamin K 2/analysis
Collapse
Affiliation(s)
- Rafika Saker
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Meklat A, Bouras N, Riba A, Zitouni A, Mathieu F, Rohde M, Schumann P, Spröer C, Klenk HP, Sabaou N. Streptomonospora algeriensis sp. nov., a halophilic actinomycete isolated from soil in Algeria. Antonie van Leeuwenhoek 2014; 106:287-92. [PMID: 24858572 DOI: 10.1007/s10482-014-0195-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 05/10/2014] [Indexed: 11/29/2022]
Abstract
A halophilic actinomycete strain, designated H27(T), was isolated from a soil sample collected from a hypersaline habitat in Djelfa Province (North-Central Algeria), and then investigated using a polyphasic taxonomic approach. The strain was observed to produce poor aerial mycelium, which formed short chains of oval to cylindrical-shaped spores at maturity, and non fragmented substrate mycelium. The optimum NaCl concentration for growth was found to be 10-15 % (w/v) and the optimum growth temperature and pH were found to be 28-37 °C and 6-7, respectively. The diagnostic diamino acid in the cell-wall peptidoglycan was identified as meso-diaminopimelic acid. The predominant menaquinones of strain H27(T) were identified as MK-11 (H4) and MK-10 (H6). The major fatty acids were found to be iso-C16:0, anteiso-C17:0, 10 methyl C17:0 and 10 methyl C16:0. The diagnostic phospholipids detected were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine and phosphatidylinositol. The chemotaxonomic properties of strain H27(T) are consistent with those shared by members of the genus Streptomonospora. 16S rRNA gene sequence analysis indicated that strain H27(T) is most closely related to Streptomonospora alba DSM 44588(T) (98.8 %) and Streptomonospora flavalba DSM 45155(T) (98.7 %) whereas the DNA-DNA relatedness values between strain H27(T) and the two type strains were 17.1 and 57.9 %, respectively. Based on the combined genotypic and phenotypic evidence, it is proposed that strain H27(T) should be classified as representative of a novel species, for which the name Streptomonospora algeriensis sp. nov. is proposed. The type strain is H27(T) (=DSM 45604(T) =CCUG 63369(T) =MTCC 11563(T)).
Collapse
Affiliation(s)
- Atika Meklat
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Algiers, Algeria
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Goudjal Y, Toumatia O, Yekkour A, Sabaou N, Mathieu F, Zitouni A. Biocontrol of Rhizoctonia solani damping-off and promotion of tomato plant growth by endophytic actinomycetes isolated from native plants of Algerian Sahara. Microbiol Res 2014; 169:59-65. [DOI: 10.1016/j.micres.2013.06.014] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/19/2013] [Accepted: 06/22/2013] [Indexed: 11/16/2022]
|
38
|
Saccharopolyspora ghardaiensis sp. nov., an extremely halophilic actinomycete isolated from Algerian Saharan soil. J Antibiot (Tokyo) 2013; 67:299-303. [PMID: 24346634 DOI: 10.1038/ja.2013.136] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 10/23/2013] [Accepted: 11/15/2013] [Indexed: 11/08/2022]
Abstract
A novel halophilic actinomycete, strain designated H53(T), 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 H53(T) and other members of the genus Saccharopolyspora ranged from 92.1 to 94.3%. The DNA G+C content of strain H53(T) was 72.6%. The genotypic and phenotypic data showed that the strain H53(T) represents a novel species of the genus Saccharopolyspora, for which the name Saccharopolyspora ghardaiensis sp. nov. is proposed, with the type strain H53(T) (=DSM 45606(T)=CCUG 63370(T)=CECT 8304(T)).
Collapse
|
39
|
Production, characterization and antioxidant potential of protease from Streptomyces sp. MAB18 using poultry wastes. BIOMED RESEARCH INTERNATIONAL 2013; 2013:496586. [PMID: 23991418 PMCID: PMC3749541 DOI: 10.1155/2013/496586] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 06/20/2013] [Accepted: 07/08/2013] [Indexed: 11/17/2022]
Abstract
Poultry waste is an abundant renewable source for the recovery of several value-added metabolites with potential industrial applications. This study describes the production of protease on poultry waste, with the subsequent use of the same poultry waste for the extraction of antioxidants. An extracellular protease-producing strain was isolated from Cuddalore coast, India, and identified as Streptomyces sp. MAB18. Its protease was purified 17.13-fold with 21.62% yield with a specific activity of 2398.36 U/mg and the molecular weight was estimated as 43 kDa. The enzyme was optimally active at pH 8–10 and temperature 50–60°C and it was most stable up to pH 12 and 6–12% of NaCl concentration. The enzyme activity was reduced when treated with Hg2+, Pb2+, and SDS and stimulated by Fe2+, Mg2+, Triton X-100, DMSO (dimethyl sulfoxide), sodium sulphite, and β-mercaptoethanol. Furthermore, the antioxidant activities of protease were evaluated using in vitro antioxidant assays, such as DPPH radical-scavenging activity, O2 scavenging activity, NO scavenging activity, Fe2+ chelating activity, and reducing power. The enzyme showed important antioxidant potential with an IC50 value of 78 ± 0.28 mg/mL. Results of the present study indicate that the poultry waste-derived protease may be useful as supplementary protein and antioxidant in the animal feed formulations.
Collapse
|
40
|
Meklat A, Bouras N, Zitouni A, Mathieu F, Lebrihi A, Schumann P, Spröer C, Klenk HP, Sabaou N. Actinopolyspora righensis sp. nov., a novel halophilic actinomycete isolated from Saharan soil in Algeria. Antonie van Leeuwenhoek 2013; 104:301-7. [PMID: 23754661 DOI: 10.1007/s10482-013-9948-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 06/03/2013] [Indexed: 12/01/2022]
Abstract
A novel halophilic actinomycete strain, H23(T), was isolated from a Saharan soil sample collected in Djamâa (Oued Righ region), El-Oued province, South Algeria. Strain H23(T) was identified as a member of the genus Actinopolyspora by a polyphasic approach. Phylogenetic analysis showed that strain H23(T) had 16S rRNA gene sequence similarities ranging from 97.8 % (Actinopolyspora xinjiangensis TRM 40136(T)) to 94.8 % (Actinopolyspora mortivallis DSM 44261(T)). The strain grew optimally at pH 6.0-7.0, 28-32 °C and in the presence of 15-25 % (w/v) NaCl. The substrate mycelium was well developed and fragmented with age. The aerial mycelium produced long, straight or flexuous spore chains with non-motile, smooth-surfaced and rod-shaped spores. Strain H23(T) had MK-10 (H4) and MK-9 (H4) as the predominant menaquinones. The whole micro-organism hydrolysates mainly consisted of meso-diaminopimelic acid, galactose and arabinose. The diagnostic phospholipid detected was phosphatidylcholine. The major cellular fatty acids were anteiso-C17:0 (37.4 %), iso-C17:0 (14.8 %), iso-C15:0 (14.2 %), and iso-C16:0 (13.9 %). The genotypic and phenotypic data show that the strain represents a novel species of the genus Actinopolyspora, for which the name Actinopolyspora righensis sp. nov. is proposed, with the type strain H23(T) (=DSM 45501(T) = CCUG 63368(T) = MTCC 11562(T)).
Collapse
Affiliation(s)
- Atika Meklat
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Meklat A, Bouras N, Zitouni A, Mathieu F, Lebrihi A, Schumann P, Spröer C, Klenk HP, Sabaou N. Actinopolyspora mzabensis sp. nov., a halophilic actinomycete isolated from an Algerian Saharan soil. Int J Syst Evol Microbiol 2013; 63:3787-3792. [PMID: 23667146 DOI: 10.1099/ijs.0.046649-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A halophilic actinomycete strain, designated H55(T), was isolated from Saharan soil sampled in the Mzab region (Ghardaïa, southern Algeria) and was characterized in a taxonomic study using a polyphasic approach. The cell wall was determined to contain meso-diaminopimelic acid and the characteristic whole-cell sugars were arabinose and galactose. The predominant menaquinones were found to be MK-10(H4) and MK-9(H4). The predominant cellular fatty acids were determined to be anteiso-C17 : 0, iso-C16 : 0 and iso-C15 : 0. The diagnostic phospholipid detected was phosphatidylcholine. The morphological and chemotaxonomic characteristics of the strain were consistent with those of members of the genus Actinopolyspora, and 16S rRNA gene sequence analysis confirmed that strain H55(T) was a member of this genus. DNA-DNA hybridization values between strain H55(T) and the type strains of the nearest species of the genus Actinopolyspora, Actinopolyspora erythraea and A. alba, were clearly below the 70 % threshold. The genotypic and phenotypic data showed that the organism represents a novel species of the genus Actinopolyspora, for which the name Actinopolyspora mzabensis sp. nov. is proposed, with the type strain H55(T) ( = DSM 45460(T) = CCUG 62965(T)).
Collapse
Affiliation(s)
- Atika Meklat
- Faculté des Sciences Agronomiques, Vétérinaires et Biologiques, Département de Biologie, Université Saâd Dahleb de Blida, Algeria
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Noureddine Bouras
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Abdelghani Zitouni
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Florence Mathieu
- Université de Toulouse; INPT-ENSAT, Laboratoire de Génie Chimique; UMR 5503 (CNRS/INPT/UPS), 1 Avenue de l'Agrobiopôle, BP 32607 Auzeville Tolosane, 31326 Castanet-Tolosan, France
| | - Ahmed Lebrihi
- Université Moulay Ismail, Marjane 2, BP 298, Meknes, Morocco
- Université de Toulouse; INPT-ENSAT, Laboratoire de Génie Chimique; UMR 5503 (CNRS/INPT/UPS), 1 Avenue de l'Agrobiopôle, BP 32607 Auzeville Tolosane, 31326 Castanet-Tolosan, France
| | - Peter Schumann
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Hans-Peter Klenk
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Nasserdine Sabaou
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| |
Collapse
|
42
|
Endophytic actinomycetes from spontaneous plants of Algerian Sahara: indole-3-acetic acid production and tomato plants growth promoting activity. World J Microbiol Biotechnol 2013; 29:1821-9. [DOI: 10.1007/s11274-013-1344-y] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/01/2013] [Indexed: 10/27/2022]
|
43
|
Polyextremophiles and the Constraints for Terrestrial Habitability. CELLULAR ORIGIN, LIFE IN EXTREME HABITATS AND ASTROBIOLOGY 2013. [DOI: 10.1007/978-94-007-6488-0_1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
44
|
Meklat A, Bouras N, Zitouni A, Mathieu F, Lebrihi A, Schumann P, Spröer C, Klenk HP, Sabaou N. Actinopolyspora saharensis sp. nov., a novel halophilic actinomycete isolated from a Saharan soil of Algeria. Antonie van Leeuwenhoek 2012. [PMID: 23196893 DOI: 10.1007/s10482-012-9859-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel halophilic actinomycete, strain H32(T), was isolated from a Saharan soil sample collected in El-Oued province, south Algeria. The isolate was characterized by means of polyphasic taxonomy. Optimal growth was determined to occur at 28-32 °C, pH 6.0-7.0 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 fragmented substrate mycelium. The cell wall was determined to contain meso-diaminopimelic acid and the characteristic whole-cell sugars were arabinose and galactose. The predominant menaquinones were found to be MK-10(H4) and MK-9(H4). The predominant cellular fatty acids were determined to be anteiso C17:0, iso-C15:0 and iso-C16:0. The diagnostic phospholipid detected was phosphatidylcholine. Phylogenetic analyses based on the 16S rRNA gene sequence showed that this strain formed a distinct phyletic line within the radiation of the genus Actinopolyspora. The 16S rRNA gene sequence similarity indicated that strain H32(T) was most closely related to 'Actinopolyspora algeriensis' DSM 45476(T) (98.8 %) and Actinopolyspora halophila DSM 43834(T) (98.5 %). Furthermore, the result of DNA-DNA hybridization between strain H32(T) and the type strains 'A. algeriensis' DSM 45476(T), A. halophila DSM 43834(T) and Actinopolyspora mortivallis DSM 44261(T) demonstrated that this isolate represents a different genomic species in the genus Actinopolyspora. Moreover, the physiological and biochemical data allowed the differentiation of strain H32(T) from its closest phylogenetic neighbours. Therefore, it is proposed that strain H32(T) represents a novel species of the genus Actinopolyspora, for which the name Actinopolyspora saharensis sp. nov. is proposed. The type strain is H32(T) (=DSM 45459(T)=CCUG 62966(T)).
Collapse
Affiliation(s)
- Atika Meklat
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Systematic and biotechnological aspects of halophilic and halotolerant actinomycetes. Extremophiles 2012; 17:1-13. [PMID: 23129307 DOI: 10.1007/s00792-012-0493-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 10/18/2012] [Indexed: 12/22/2022]
Abstract
More than 70 species of halotolerant and halophilic actinomycetes belonging to at least 24 genera have been validly described. Halophilic actinomycetes are a less explored source of actinomycetes for discovery of novel bioactive secondary metabolites. Degradation of aliphatic and aromatic organic compounds, detoxification of pollutants, production of new enzymes and other metabolites such as antibiotics, compatible solutes and polymers are other potential industrial applications of halophilic and halotolerant actinomycetes. Especially new bioactive secondary metabolites that are derived from only a small fraction of the investigated halophilic actinomycetes, mainly from marine habitats, have revealed the huge capacity of this physiological group in production of new bioactive chemical entities. Combined high metabolic capacities of actinomycetes and unique features related to extremophilic nature of the halophilic actinomycetes have conferred on them an influential role for future biotechnological applications.
Collapse
|
46
|
Actinopolyspora algeriensis sp. nov., a novel halophilic actinomycete isolated from a Saharan soil. Extremophiles 2012; 16:771-6. [DOI: 10.1007/s00792-012-0473-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 07/23/2012] [Indexed: 10/28/2022]
|
47
|
Fang C, Zhang J, Pang H, Li Y, Xin Y, Zhang Y. Nocardiopsis flavescens sp. nov., an actinomycete isolated from marine sediment. Int J Syst Evol Microbiol 2011; 61:2640-2645. [DOI: 10.1099/ijs.0.027987-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-positive, aerobic bacterium, strain SA6T, was isolated from marine sediment taken at a depth of 20 cm on the seashore of Lianyungang, Jiangsu Province, China. Strain SA6T contained meso-diaminopimelic acid, no diagnostic sugars, type PIII phospholipids, and MK-10(H2) and MK-10(H4) as the predominant menaquinones. The organism showed a range of chemical and morphological properties consistent with its classification in the genus Nocardiopsis. The almost-complete 16S rRNA gene sequence of strain SA6T was aligned with corresponding sequences of representatives of the genus Nocardiopsis and related taxa by using two tree-making algorithms. Strain SA6T formed a distinct phyletic line within the evolutionary radiation occupied by the genus Nocardiopsis and was related most closely to the type strain of Nocardiopsis lucentensis. Strain SA6T could be distinguished from its nearest phylogenetic relatives in the genus Nocardiopsis based on DNA–DNA relatedness data and a combination of phenotypic properties. Strain SA6T should therefore be assigned to the genus Nocardiopsis as a representative of a novel species, for which the name Nocardiopsis flavescens sp. nov. is proposed. The type strain is SA6T ( = CGMCC 4.5723T = JCM 17424T).
Collapse
Affiliation(s)
- Caiyuan Fang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Jianli Zhang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| | - Huancheng Pang
- Institute of Agri-resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Yuyi Li
- Institute of Agri-resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Yuhua Xin
- China General Microbiological Culture Collection Center, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yabo Zhang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, PR China
| |
Collapse
|
48
|
A novel strain of Actinopolyspora mortivallis with antibacterial activity isolated from a Saharan soil. ANN MICROBIOL 2011. [DOI: 10.1007/s13213-011-0346-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
|
49
|
Amoozegar MA, Khoshnoodi M, Didari M, Hamedi J, Ventosa A, Baldwin SA. Tellurite removal by a tellurium-tolerant halophilic bacterial strain, Thermoactinomyces sp. QS-2006. ANN MICROBIOL 2011. [DOI: 10.1007/s13213-011-0343-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
50
|
Isolation, taxonomy, and antagonistic properties of halophilic actinomycetes in Saharan soils of Algeria. Appl Environ Microbiol 2011; 77:6710-4. [PMID: 21764956 DOI: 10.1128/aem.00326-11] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The diversity of a population of 52 halophilic actinomycetes was evaluated by a polyphasic approach, which showed the presence of members of the Actinopolyspora, Nocardiopsis, Saccharomonospora, Streptomonospora, and Saccharopolyspora genera. One strain was considered to be a new member of the last genus, and several other strains seemed to be new species. Furthermore, 50% of strains were active against a broad range of indicators and contained genes encoding polyketide synthetases and nonribosomal peptide synthetases.
Collapse
|