Nocardiopsis arabia sp. nov., a halotolerant actinomycete isolated from a sand-dune soil

Hozzein, Wael N.; Goodfellow, Michael

doi:10.1099/ijs.0.65014-0

Cited by 30 publications

(19 citation statements)

References 40 publications

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“…The genus Nocardiopsis was first described by Meyer (1976) and currently comprises 30 recognized species (Meyer 1976;Miyashita et al 1984;Grund and Kroppenstedt 1990;Yassin et al 1993Yassin et al , 1997Al-Tai and Ruan 1994;Chun et al 2000;Evtushenko et al 2000;Peltola et al 2001;Al-Zarban et al 2002;Kämpfer et al 2002;Schippers et al 2002;Li et al 2003Li et al , 2004Li et al , 2006Hozzein et al 2004;Sabry et al 2004;Chen et al 2008Chen et al , 2009Hozzein and Goodfellow 2008;Yang et al 2008;Zhang et al 2008;Yassin et al 2009). The genus Nocardiopsis was shown to exhibit distinct chemotaxonomic characteristics: cell-wall chemotype III/C (meso-diaminopimelic acid and no diagnostic sugars in whole-cell hydrolysates; Lechevalier and Lechevalier 1970), phospholipid type PIII (phosphatidylcholine and phosphatidylmethylethanolamine as characteristic phospholipids; Lechevalier et al 1977), menaquinone MK-10 with variable degrees of saturation in the side chain as the predominant isoprenoid quinone (Kroppenstedt 1992), fatty acid type 3d (containing iso-branched, anteiso-branched and 10-methylbranched chain fatty acids; Kroppenstedt 1985) and DNA G ?…”

Section: Introductionmentioning

confidence: 98%

Nocardiopsis terrae sp. nov., a halophilic actinomycete isolated from saline soil

Chen

Zhang

Tang

et al. 2010

Antonie van Leeuwenhoek

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A Gram-positive, moderately halophilic, facultatively alkaliphilic, catalase- and oxidase-positive, obligately aerobic, filamentous actinomycete strain, designated YIM 90022(T), was isolated from saline soil collected from the Qaidam Basin, north-west China. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the new isolate was a member of the genus Nocardiopsis and the sequence similarities between the isolate and the type strains of members of the genus Nocardiopsis were in the range of 95.1-98.7%. Phenotypic and chemotaxonomic properties of this organism also indicated that strain YIM 90022(T) was a member of the genus Nocardiopsis. The strain grew well on most of the media tested, producing yellow-white to deep brown substrate mycelium and white aerial mycelium. Light gray to deep brown diffusible pigments were produced. The substrate mycelium was well developed and fragmented with age; the aerial mycelium produced long, straight to flexuous spore chains with non-motile, smooth-surfaced, rod-shaped spores on them. The strain grew in the presence of 1-15% (w/v) total salts (optimum, 3-5%) and at pH 6.0-10.5 (optimum, pH 8.5) and 10-45 degrees C (optimum, 30 degrees C). Whole-cell hydrolysates of strain YIM 90022(T) contained meso-diaminopimelic acid and no diagnostic sugars. The predominant menaquinones were MK-10(H(4)), MK-9(H(8)), MK-10(H(6)) and MK-10(H(8)). Polar lipids comprised diphosphatidylglycerol, phosphatidylcholine, phosphatidylglycerol and phosphatidylmethylethanolamine. The major cellular fatty acids were iso-C(16:0), anteiso-C(17:0), 10-methyl-C(18:0) and 10-methyl-C(17:0). The DNA G + C content of strain YIM 90022(T) was 71.5 mol%. The combination of phylogenetic analysis, DNA-DNA relatedness data, phenotypic characteristics and chemotaxonomic data supported the suggestion that strain YIM 90022(T) represents a new species of the genus Nocardiopsis, for which the name Nocardiopsis terrae sp. nov. is proposed. The type strain is YIM 90022(T) (=CCTCC AA 208011(T) =KCTC 19431(T)).

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Section: Introductionmentioning

confidence: 98%

Nocardiopsis terrae sp. nov., a halophilic actinomycete isolated from saline soil

Chen

Zhang

Tang

et al. 2010

Antonie van Leeuwenhoek

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“…1. With respect to extreme temperatures, some species have been isolated from cold soils (Xu et al 2014), and others have been obtained from desert sand dunes and compost soils, where temperatures are higher (Hozzein and Goodfellow 2008;Yamamura et al 2010;Yan et al 2011). A large plethora of species has been isolated from environments that are rich in salt.…”

Section: Introductionmentioning

confidence: 99%

Nocardiopsis species as potential sources of diverse and novel extracellular enzymes

Bennur

Kumar

Zinjarde

et al. 2014

Appl Microbiol Biotechnol

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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.

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“…The genus currently comprises 28 species (Li et al 2004a, b;Chenet al 2008;Yang et al 2008;Zhang et al 2008;Hozzein and Goodfellow 2009). Nocardiopsis strains are frequently isolated from saline and alkaline soils (Hozzein et al 2004;Li et al 2004a, b;Chen et al 2008;Yang et al 2008).…”

Section: Introductionmentioning

confidence: 97%

Identification of an alkaliphilic actinomycetes that produces a PrPSc-degrading enzyme

et al. 2010

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An alkaliphilic actinomycete strain TOA-1, that produces a PrP Sc -degrading keratinase, was isolated from cement of bathroom tiles. This strain produced substrate and aerial mycelia. Growth occurred in the pH range 7.5-13.0, with an optimal pH of 10.0. A salt concentration of up to 8% was tolerated, and various organic substrates were used for growth. Strain TOA-1 contained meso-diaminopimelic acid, no diagnostic sugars, iso-C 16:0 as the major cellular fatty acid, and MK-10

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Nocardiopsis arabia sp. nov., a halotolerant actinomycete isolated from a sand-dune soil

Cited by 30 publications

References 40 publications

Nocardiopsis terrae sp. nov., a halophilic actinomycete isolated from saline soil

Nocardiopsis terrae sp. nov., a halophilic actinomycete isolated from saline soil

Nocardiopsis species as potential sources of diverse and novel extracellular enzymes

Identification of an alkaliphilic actinomycetes that produces a PrPSc-degrading enzyme

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