The Families Frankiaceae, Geodermatophilaceae, Acidothermaceae and Sporichthyaceae

Normand, Philippe

doi:10.1007/0-387-30743-5_26

Cited by 24 publications

(14 citation statements)

References 88 publications

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“…Wholecell sugar analysis detected the presence of galactose as diagnostic sugar (Lechevalier & Lechevalier, 1970) but also glucose and traces of ribose and mannose. The strain displayed primarily MK-9(H 4 ) at 85.8 % in accordance with values reported for the family Geodermatophilaceae (Normand, 2006) but also MK-9(H 2 ) (5.2 %), MK-8(H 4 ) (2.5 %) and MK-9(H 0 ) (3.6 %) were detected. Predominant fatty acids (>10 %) were iso-C 16 : 0 (37.6±0.5 %) and C 16 : 1 !7c (12.7±1.2 %) (a complete fatty acids composition of BMG 825 T is given in Table S1).…”

supporting

confidence: 88%

Geodermatophilus pulveris sp. nov., a gamma-radiation-resistant actinobacterium isolated from the Sahara desert

Hezbri

Ghodhbane‐Gtari

Montero‐Calasanz

et al. 2016

International Journal of Systematic and Evolutionary Microbiology

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A black-pigmented, aerobic actinobacterium, tolerant to ionizing radiation, designated BMG 825 T , was isolated from desert limestone dust in Tunisia. The strain grew within the temperature range 10-40 C, at pH 5.5-11.0 and in the presence of 2 % NaCl. The DNA G+C content was 75.7 mol%, and its cell-wall peptidoglycan contained meso-diaminopimelic acid. Sugars of whole-cell hydrolysates were galactose, glucose, and trace amounts of ribose and mannose. The predominant menaquinone was MK-9(H 4 ), and the major fatty acids were iso-C 16 : 0 and C 16 : 1 !7c. The polar lipid profile comprised phosphatidylcholine, phosphatidylinositol, diphosphatidylglycerol, phosphatidylethanolamine, hydroxyphosphatidylethanolamine and an unspecified glycolipid. 16S rRNA gene sequence analysis revealed that the strain fell into the genus Geodermatophilus, showing the highest similarity with Geodermatophilus poikilotrophus DSM 44209 T (99.1 %). DNA-DNA hybridization results, phylogenetic distinctiveness and phenotypic properties supported the classification of this strain as a representative of a novel species of the genus Geodermatophilus, for which the name Geodermatophilus pulveris sp. nov. is proposed. The type strain is BMG 825 T (=CECT 9003 T =DSM 46839 T ).Twenty species are currently described within the genus Geodermatophilus (Hezbri et al., 2015a), and several of these actinobacteria have been reported to be highly resistant to stresses known to give rise to reactive oxygen species such as gamma-radiation, UV and desiccation (Gtari et al., 2012; Hezbri et al., 2015a, b, c). The genome (Ivanova et al., 2010) and recently published proteogenome of Geodermatophilus obscurus (Sghaier et al., 2016) provided a close-up view of mechanisms permitting adaptation to environmental stresses, which are mainly pigmentation, catalase production and repair of double-strand breaks through the non-homologous end joining pathway.Strain BMG 825 T was isolated during an investigation about the dust microbial population in grooves in limestone cliffs from the Tunisian part of the Grand Erg Oriental (English: 'Great Eastern Sand Sea') in the Sahara desert. The sample collected initially was serially diluted in 0.85 % saline solution. Aliquots of each serial dilution were then spread on Luedemann medium (DSMZ medium 877) (Luedemann, 1968) and R2A agar (DSMZ medium 830) (Reasoner et al., 1979), and incubated at 28 C for about 3 weeks. Thereafter, a dry, black colony designated BMG 825 T was isolated. The culture was sub-cultivated on Luedemann medium at 28 C for 7 days. Following purification, the organism was maintained in glycerol (35 %, w/v) stocks at À80 C for further investigations. Strain BMG 825 T was routinely grown on GYM Streptomyces medium (DSMZ medium 65) at 28 C for testing the physiological and biochemical properties, except where mentioned.

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supporting

confidence: 88%

Geodermatophilus pulveris sp. nov., a gamma-radiation-resistant actinobacterium isolated from the Sahara desert

Hezbri

Ghodhbane‐Gtari

Montero‐Calasanz

et al. 2016

International Journal of Systematic and Evolutionary Microbiology

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“…T and members of related genera Taxa: 1, strain F12 T (data from this study); 2, Acidimicrobium (Clark & Norris, 1996;Normand, 2006); 3, Frankia (Normand et al, 1996); 4, Geodermatophilus (Normand et al, 1996); 5, Sporichthya (Rainey et al, 1993;Tamura et al, 1999); 6, Acidothermus (Mohagheghi et al, 1986).…”

Section: Description Of Iamia Majanohamensis Sp Novmentioning

confidence: 64%

Iamia majanohamensis gen. nov., sp. nov., an actinobacterium isolated from sea cucumber Holothuria edulis, and proposal of Iamiaceae fam. nov.

Kurahashi

Fukunaga

Sakiyama

et al. 2009

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLO

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Iamia majanohamensis gen. nov., sp. nov., an actinobacterium isolated from sea cucumber Holothuria edulis, and proposal of Iamiaceae fam. nov. Kurahashi & Yokota, 2007b). In this study we used SN medium, which is commonly used for algal cultivation, and a novel bacterial strain (F12 T ), forming a deep branch with Acidimicrobium ferrooxidans in the order Acidimicrobiales, was isolated.Acidimicrobium strains are Gram-positive, rod-shaped bacteria that are found in warm, acidic, sulphur-or mineral sulphide-rich environments. Acidimicrobium ferrooxidans was originally described by Clark & Norris (1996) and was subsequently placed in the subclass Acidimicrobidae (Stackebrandt et al., 1997), which contains only the order Acidimicrobiales, family Acidimicrobiaceae, genus Acidimicrobium and one species, Acidimicrobium ferrooxidans. Interestingly, Rheims et al. (1999) carried out molecular environmental studies and discovered the existence of several novel 16S rRNA gene sequence clusters with probable worldwide distribution in different terrestrial environments, forming several lineages deeply rooted to the order Acidimicrobiales. However, no novel species belonging to these clusters have been reported.The strain used in this study was obtained from the abdominal epidermis of a sea cucumber, Holothuria edulis, which was collected off the coast of Aka Island, Okinawa prefecture, Japan, at a depth of 6 m, as described previously (Kurahashi & Yokota, 2004). The medium used for isolation of strain F12T was SN medium, consisting of Abbreviations: DAP, diaminopimelic acid; ML, maximum likelihood; NJ, neighbour joining; TEM, transmission electron microscopy.The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain F12 T is AB360448.A supplementary figure showing the general morphology of cells of strain F12 T is available with the online version of this paper.

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“…Furthermore, the abundance of Sporichthyaceae was lower in samples 3 and 4 than in the other samples, which might be due to the different environments at sampling sites 3 and 4. The Sporichthyaceae family includes bacteria with slow growth rates and fastidious growth requirements (Normand 2006). In our study, the water-quality levels (chemical oxygen demand (Table S1), indicating that further investigation should be focused on the relationships of specific environmental factors with the microbial diversity of Beijing surface waters.…”

Section: Discussionmentioning

confidence: 86%

Bacterial communities of Beijing surface waters as revealed by 454 pyrosequencing of the 16S rRNA gene

Wei

Wang

Liu

et al. 2015

Environ Sci Pollut Res

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As a better understanding of Beijing surface water ecosystems can provide clues for environmental management and public health, here, we report a study of the bacterial communities of five Beijing surface waters conducted using 454 pyrosequencing of 16S ribosomal RNA (rRNA) genes. We expected to observe a core bacterial community among the surface waters and differences in bacterial community abundance over the different locations of sampling. In this study, we obtained a total of 60,810 trimmed reads from the five samples after the removal of unqualified reads. Bacterial sequences from the five samples were classified into taxonomic classes using the default settings of the mothur platform. Our results provided insight into the bacterial community composition of surface waters and revealed that there was a core microbial community in the microbial populations of surface samples at different geographic locations, with 13 phyla and 40 genera in common. Our findings also revealed the differences in bacterial communities among five surface water samples obtained at different locations.

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The Families Frankiaceae, Geodermatophilaceae, Acidothermaceae and Sporichthyaceae

Cited by 24 publications

References 88 publications

Geodermatophilus pulveris sp. nov., a gamma-radiation-resistant actinobacterium isolated from the Sahara desert

Geodermatophilus pulveris sp. nov., a gamma-radiation-resistant actinobacterium isolated from the Sahara desert

Iamia majanohamensis gen. nov., sp. nov., an actinobacterium isolated from sea cucumber Holothuria edulis, and proposal of Iamiaceae fam. nov.

Bacterial communities of Beijing surface waters as revealed by 454 pyrosequencing of the 16S rRNA gene

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