Relevant bibliographies by topics / Streptomyces; Nocardia; Mycobacterium

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Streptomyces; Nocardia; Mycobacterium'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Streptomyces; Nocardia; Mycobacterium"

1

Laurent, Frederic J., Frederique Provost, and Patrick Boiron. "Rapid Identification of Clinically RelevantNocardia Species to Genus Level by 16S rRNA Gene PCR." Journal of Clinical Microbiology 37, no. 1 (1999): 99–102. http://dx.doi.org/10.1128/jcm.37.1.99-102.1999.

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Two regions of the gene coding for 16S rRNA in Nocardiaspecies were selected as genus-specific primer sequences for a PCR assay. The PCR protocol was tested with 60 strains of clinically relevant Nocardia isolates and type strains. It gave positive results for all strains tested. Conversely, the PCR assay was negative for all tested species belonging to the most closely related genera, including Dietzia, Gordona,Mycobacterium, Rhodococcus,Streptomyces, and Tsukamurella. Besides, unlike the latter group of isolates, all Nocardia strains exhibited one MlnI recognition site but no SacI restriction site. This assay offers a specific and rapid alternative to chemotaxonomic methods for the identification of Nocardiaspp. isolated from pathogenic samples.
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Oakey, Jane, Judy Forbes-Faulkner, Christopher Gilpin, Bronwyn Murdoch, and Steven Johnson. "Pyogranuloma Caused by Mycobacterium Asiaticum Infection in a Steer." Journal of Veterinary Diagnostic Investigation 17, no. 4 (2005): 378–82. http://dx.doi.org/10.1177/104063870501700414.

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In 2003, a steer carcass was condemned at a Central Queensland abattoir because of metastatic tumors. In addition, a granulomatous lesion was found in the mediastinal lymph node. Histological examination showed this to be a pyogranuloma, typically associated with Rhodococcus or the Nocardia/ Streptomyces group. However, in this case, the only etiological agent was an acid-fast bacillus, which would normally be associated with a more fibrous lesion. A number of nucleic acid–based techniques were used, and the isolate was identified as Mycobacterium asiaticum. This organism is a rarely encountered opportunistic pathogen of humans, associated with subtropical climates. This is the first report of this organism causing infection in cattle. The similarities between this case and cases of human disease are discussed.
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A, RAJA, and P. Gajalakshmi. "Selective isolation and characterization of rare actinomycetes adopted in glacier soil of Manali ice point and its activity against Mycobacterium spp." Journal of Microbiology and Biotechnology Research 7, no. 5 (2017): 1. http://dx.doi.org/10.24896/jmbr.2017751.

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An exigent demand of antimicrobial agent against M. tuberculosis was lead to the isolation of novel rare actinomycetes from the unexplored cryophilic environment. Soil samples were collected from glacier ice point of Kullu Manali and processed for further studies. A novel approach was described for the isolation of rare actinomycetes from a heterogeneous population. Isolation was done by conventional and density gradient centrifugation. Sucrose gradient centrifugation showed a maximum of 24 actinomycetes isolates which belong to the genera of Streptomyces sp (12), Micromonospora sp (5) Planomonospora sp(2), Micropolyspora sp (2), Actinopolyspora sp (1) Nocardia sp (1) and Intrasporangium sp (1). Of these 24 actinomycetes, isolate Planomonospora sp (PL-2) showed potent anti-mycobacterial activity against Mycobacterium smegmatis (MTCC300) and M.tuberculosis (MTCC 6). Bioautography reveals that the Rf value of active compound was 0.75 and retains the antimicrobial activity at 75° C. Based on the C13 and H1 NMR the active compound was characterized as 2-(2-ethenylphenyl) heptane-1-ol. Phylogenetic analysis reveals active isolate was closely related to Planomonospora alba and the Genbank accession is JQ280498.
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Ventura, Marco, Carlos Canchaya, Andreas Tauch, et al. "Genomics of Actinobacteria: Tracing the Evolutionary History of an Ancient Phylum." Microbiology and Molecular Biology Reviews 71, no. 3 (2007): 495–548. http://dx.doi.org/10.1128/mmbr.00005-07.

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SUMMARY Actinobacteria constitute one of the largest phyla among Bacteria and represent gram-positive bacteria with a high G+C content in their DNA. This bacterial group includes microorganisms exhibiting a wide spectrum of morphologies, from coccoid to fragmenting hyphal forms, as well as possessing highly variable physiological and metabolic properties. Furthermore, Actinobacteria members have adopted different lifestyles, and can be pathogens (e.g., Corynebacterium, Mycobacterium, Nocardia, Tropheryma, and Propionibacterium), soil inhabitants (Streptomyces), plant commensals (Leifsonia), or gastrointestinal commensals (Bifidobacterium). The divergence of Actinobacteria from other bacteria is ancient, making it impossible to identify the phylogenetically closest bacterial group to Actinobacteria. Genome sequence analysis has revolutionized every aspect of bacterial biology by enhancing the understanding of the genetics, physiology, and evolutionary development of bacteria. Various actinobacterial genomes have been sequenced, revealing a wide genomic heterogeneity probably as a reflection of their biodiversity. This review provides an account of the recent explosion of actinobacterial genomics data and an attempt to place this in a biological and evolutionary context.
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Yadav, Neelam, and Ajar Nath Yadav. "Actinobacteria for sustainable agriculture." Journal of Applied Biotechnology & Bioengineering 6, no. 1 (2019): 38–41. http://dx.doi.org/10.15406/jabb.2019.06.00172.

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Actinobacteria is a phylum and class of Gram-positive bacteria. The phylum Actinobacteria are classified into six classes namely Acidimicrobiia, Actinobacteria, Coriobacteriia, Nitriliruptoria, Rubrobacteria and Thermoleophilia. Members of phylum Actinobacteria are ubiquitous in nature. Actinobacteria can be utilized as biofertilizers for sustainable agriculture as they can enhance plant growth and soil health though different plant growth promoting attributes such as solubilization of phosphorus, potassium and zinc, production of Fe-chelating compounds, phytohormones hormones such indole acetic acids, cytokinin, and gibberellins as well as by biological nitrogen fixation. The Actinobacteria also plays an important role in mitigation of different abiotic stress conditions in plants. The members of phylum Actinobacteria such as Actinomyces, Arthrobacter, Bifidobacterium, Cellulomonas, Clavibacter, Corynebacterium, Frankia, Microbacterium, Micrococcus, Mycobacterium, Nocardia, Propionibacterium, Pseudonocardia, Rhodococcus, Sanguibacter and Streptomyces exhibited the multifarious plant growth promoting attributes and could be used as biofertilizers for crops growing under natural as well as under the abiotic stress conditions for plant growth and soil health for sustainable agriculture.
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Yadav, Neelam, and Ajar Nath Yadav. "Actinobacteria for sustainable agriculture." Journal of Applied Biotechnology & Bioengineering 6, no. 1 (2019): 38–41. http://dx.doi.org/10.15406/jabb.2019.06.00172.

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Actinobacteria is a phylum and class of Gram-positive bacteria. The phylum Actinobacteria are classified into six classes namely Acidimicrobiia, Actinobacteria, Coriobacteriia, Nitriliruptoria, Rubrobacteria and Thermoleophilia. Members of phylum Actinobacteria are ubiquitous in nature. Actinobacteria can be utilized as biofertilizers for sustainable agriculture as they can enhance plant growth and soil health though different plant growth promoting attributes such as solubilization of phosphorus, potassium and zinc, production of Fe-chelating compounds, phytohormones hormones such indole acetic acids, cytokinin, and gibberellins as well as by biological nitrogen fixation. The Actinobacteria also plays an important role in mitigation of different abiotic stress conditions in plants. The members of phylum Actinobacteria such as Actinomyces, Arthrobacter, Bifidobacterium, Cellulomonas, Clavibacter, Corynebacterium, Frankia, Microbacterium, Micrococcus, Mycobacterium, Nocardia, Propionibacterium, Pseudonocardia, Rhodococcus, Sanguibacter and Streptomyces exhibited the multifarious plant growth promoting attributes and could be used as biofertilizers for crops growing under natural as well as under the abiotic stress conditions for plant growth and soil health for sustainable agriculture.
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Lee, Learn-Han, Nurullhudda Zainal, Adzzie-Shazleen Azman, et al. "Diversity and Antimicrobial Activities of Actinobacteria Isolated from Tropical Mangrove Sediments in Malaysia." Scientific World Journal 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/698178.

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The aim of this study was to isolate and identify Actinobacteria from Malaysia mangrove forest and screen them for production of antimicrobial secondary metabolites. Eighty-seven isolates were isolated from soil samples collected at 4 different sites. This is the first report to describe the isolation ofStreptomyces, Mycobacterium, Leifsonia, Microbacterium, Sinomonas, Nocardia, Terrabacter, Streptacidiphilus, Micromonospora, Gordonia, andNocardioidesfrom mangrove in east coast of Malaysia. Of 87 isolates, at least 5 isolates are considered as putative novel taxa. NineStreptomycessp. isolates were producing potent antimicrobial secondary metabolites, indicating thatStreptomycesisolates are providing high quality metabolites for drug discovery purposes. The discovery of a novel species,Streptomyces pluripotenssp. nov. MUSC135Tthat produced potent secondary metabolites inhibiting the growth of MRSA, had provided promising metabolites for drug discovery research. The biosynthetic potential of 87 isolates was investigated by the detection of polyketide synthetase (PKS) and nonribosomal polyketide synthetase (NRPS) genes, the hallmarks of secondary metabolites production. Results showed that many isolates were positive for PKS-I (19.5%), PKS-II (42.5%), and NRPS (5.7%) genes, indicating that mangroveActinobacteriahave significant biosynthetic potential. Our results highlighted that mangrove environment represented a rich reservoir for isolation ofActinobacteria, which are potential sources for discovery of antimicrobial secondary metabolites.
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Purwantini, Endang, Thomas P. Gillis, and Lacy Daniels. "Presence of F420-dependent glucose-6-phosphate dehydrogenase in Mycobacterium and Nocardia species, but absence from Streptomyces and Corynebacterium species and methanogenic Archaea." FEMS Microbiology Letters 146, no. 1 (2006): 129–34. http://dx.doi.org/10.1111/j.1574-6968.1997.tb10182.x.

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9

Fiss, E., and G. F. Brooks. "Use of a siderophore detection medium, ethylene glycol degradation, and beta-galactosidase activity in the early presumptive differentiation of Nocardia, Rhodococcus, Streptomyces, and rapidly growing Mycobacterium species." Journal of Clinical Microbiology 29, no. 7 (1991): 1533–35. http://dx.doi.org/10.1128/jcm.29.7.1533-1535.1991.

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10

Erol, Erdal, Mariela Scortti, Jordan Fortner, Mukesh Patel, and José A. Vázquez-Boland. "Antimicrobial resistance spectrum conferred by pRErm46 of emerging macrolide (multidrug)-resistant Rhodococcus equi." Journal of Clinical Microbiology, July 28, 2021. http://dx.doi.org/10.1128/jcm.01149-21.

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Clonal multidrug resistance recently emerged in Rhodococcus equi , complicating the therapeutic management of this difficult-to-treat animal and human pathogenic actinomycete. The currently spreading multidrug-resistant (MDR) “2287” clone arose in equine farms upon acquisition, and co-selection by mass macrolide-rifampin therapy, of the pRErm46 plasmid carrying the erm (46) macrolides-lincosamides-streptogramins resistance determinant, and an rpoB S531F mutation. Here, we screened a collection of susceptible and macrolide-rifampin-resistant R. equi from equine clinical cases using a panel of 15 antimicrobials against rapidly growing mycobacteria (RGM), nocardiae and other aerobic actinomycetes (NAA). R. equi –including MDR isolates– was generally susceptible to linezolid, minocycline, tigecycline, amikacin and tobramycin according to Staphylococcus aureus interpretive criteria, plus imipenem, cefoxitin and ceftriaxone based on Clinical & Laboratory Standards Institute (CLSI) guidelines for RGM/NAA. Ciprofloxacin and moxifloxacin were in the borderline category according to European Committee on Antimicrobial Susceptibility Testing (EUCAST) criteria. Molecular analyses linked pRErm46 to significantly increased MICs for trimethoprim-sulfamethoxazole and doxycycline in addition to clarithromycin within the RGM/NAA panel, and to streptomycin, spectinomycin and tetracycline resistance. pRErm46 variants with spontaneous deletions in the class 1 integron (C1I) region, observed in ≈30% of erm (46)-positive isolates, indicated that the newly identified resistances were attributable to C1I’s sulfonamide ( sul1 ) and aminoglycoside ( aaA9 ) resistance cassettes and adjacent tetRA (33) determinant. Most MDR isolates carried the rpoB S531F mutation of the 2287 clone, while different rpoB mutations (S531L, S531Y) detected in two cases suggest the emergence of novel MDR R. equi strains.
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Dissertations / Theses on the topic "Streptomyces; Nocardia; Mycobacterium"

1

Shojaei, Hasan. "Molecular systematics of some medically important actinomycetes." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326085.

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