Antibiotic Sensitivity of Some Nocardioform Bacteria and its Value as a Criterion for Taxonomy

Goodfellow, Michael; Orchard, Valerie A.

doi:10.1099/00221287-83-2-375

Cited by 98 publications

(64 citation statements)

References 15 publications

(14 reference statements)

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“…infections. The heterogeneity within the species N. asteroides has been well documented by numerical phenetic (196,204,431,512,596,598), genetic (174,402), and immunologic (365,449,472) (518). Also, as suggested for N. farcinica infections, infections with N. nova may be more common than is presently suspected; however, the successful detection of these newly recognized species of microorganisms is dependent upon the performance of appropriate isolation and characterization techniques (621 (510).…”

Section: Epidemiologic Aspects Of Infection In Humansmentioning

confidence: 99%

The medically important aerobic actinomycetes: epidemiology and microbiology

1994

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The aerobic actinomycetes are soil-inhabiting microorganisms that occur worldwide. In 1888, Nocard first recognized the pathogenic potential of this group of microorganisms. Since then, several aerobic actinomycetes have been a major source of interest for the commercial drug industry and have proved to be extremely useful microorganisms for producing novel antimicrobial agents. They have also been well known as potential veterinary pathogens affecting many different animal species. The medically important aerobic actinomycetes may cause significant morbidity and mortality, in particular in highly susceptible severely immunocompromised patients, including transplant recipients and patients infected with human immunodeficiency virus. However, the diagnosis of these infections may be difficult, and effective antimicrobial therapy may be complicated by antimicrobial resistance. The taxonomy of these microorganisms has been problematic. In recent revisions of their classification, new pathogenic species have been recognized. The development of additional and more reliable diagnostic tests and of a standardized method for antimicrobial susceptibility testing and the application of molecular techniques for the diagnosis and subtyping of these microorganisms are needed to better diagnose and treat infected patients and to identify effective control measures for these unusual pathogens. We review the epidemiology and microbiology of the major medically important aerobic actinomycetes.

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Section: Epidemiologic Aspects Of Infection In Humansmentioning

confidence: 99%

The medically important aerobic actinomycetes: epidemiology and microbiology

1994

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“…The plates were observed for zones of growth inhibition around the disks after incubation periods of 3 and 10 days at 18°C. The tests for susceptibility to vancomycin and rifampin were carried out in the same manner, but the filter disks were prepared by using the method of Goodfellow and Orchard (13). The filter disks were soaked with a solution containing 50 pg of vancomycin (Serva) per ml or 50 pg of rifampin (Serva) per ml.…”

Section: * Corresponding Authormentioning

confidence: 99%

Rhodococcus marinonascens sp. nov., an Actinomycete from the Sea

Helmke

Weyland

1984

International Journal of Systematic Bacteriology

116

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Two groups of nocardioform organisms isolated from marine sediments were studied, along with representative strains of the genera Rhodococcus, Nocardia, and Mycobacterium. Strains of the red-or orange-colored group showed no marine affinity and exhibited a close relationship to Rhodococcus rhodochrous. The 17 marine isolates of the cream-colored group formed a homogeneous well-separated cluster and were particularly characterized as moderately halophilic and psychrotrophic organisms. These isolates were assigned to a new species within the genus Rhodococcus. We propose the name Rhodococcus marinonascens, referring to the exclusive occurrence of this taxon in the sea, and describe the properties of the species and of type strain 3438W (= DSM 43752).

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“…Acid production from carbohydrates was assessed using methods described by Leifson (1963), and utilization of sole carbon and energy sources was determined according to Gordon & Mihm (1957). Hydrolysis of urea was determined on medium described by Goodfellow & Orchard (1974), comprising 75 ml urea shake flask medium [10 g KH 2 PO 4 , 9.5 g Na 2 HPO 4 , 1 g yeast extract, with 0.04 % (w/v) phenol red, 1000 ml distilled water, pH 7.2] and 15 ml of 15 % urea. Citrate utilization was tested on Simmons citrate agar (Sigma).…”

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confidence: 99%

Planomicrobium soli sp. nov., isolated from soil

Luo

Zhang

et al. 2014

International Journal of Systematic and Evolutionary Microbiology

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A Gram-staining-positive bacterium, designated strain XN13 T , was isolated from a soil sample collected from ALaShan National Geological Park in Inner Mongolia Autonomous Region, China and subjected to a taxonomic study using a polyphasic approach. Strain XN13 T was found to have a range of chemical and morphological properties consistent with its classification in the genus Planomicrobium. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain XN13 T was related to members of the genus Planomicrobium. The closest phylogenetic relatives were Planomicrobium okeanokoites NBRC 12536 T , Planomicrobium koreense JG07 T , Planomicrobium mcmeekinii S23F2 T and Planomicrobium flavidum ISL-41 T with 98.2 %, 97.8 %, 97.8 % and 97.7 % 16S rRNA gene sequence similarity, respectively. The major cellular fatty acids were anteiso-C 15 : 0 , C 16 : 1 v7c alcohol, iso-C 14 : 0 and C 16 : 1 v11c. The predominant menaquinones were MK-8 and MK-7. The DNA G+C content was 40.3 mol%. The DNA-DNA relatedness values between strain XN13 T and Planomicrobium okeanokoites KCTC 3672 T , Planomicrobium koreense KCTC 3684 T , P. mcmeekinii CGMCC 1.2724 T , Planomicrobium flavidum KCTC 13261 T , Planomicrobium chinense CGMCC 1.3454 T and Planomicrobium glaciei CGMCC 1.6846 T were 36 %, 30 %, 34 %, 29 %, 30 % and 31 %, respectively. The organism is different from recognized species of the genus Planomicrobium in several phenotypic characteristics. On the basis of phenotypic and genotypic properties, strain XN13 T represents a novel species of the genus Planomicrobium, for which the name Planomicrobium soli sp. nov. is proposed. The type strain is XN13 T (5CGMCC 1.12259 T 5KCTC 33047 T ).

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Antibiotic Sensitivity of Some Nocardioform Bacteria and its Value as a Criterion for Taxonomy

Abstract: J o i~r t i d of General Microbiology (I974), 83, 375-387 Pr.intetl in Greot Britcriti

Cited by 98 publications

References 15 publications

The medically important aerobic actinomycetes: epidemiology and microbiology

The medically important aerobic actinomycetes: epidemiology and microbiology

Rhodococcus marinonascens sp. nov., an Actinomycete from the Sea

Planomicrobium soli sp. nov., isolated from soil

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