Psychrotrophic amylolytic bacteria from deep sea sediment of Prydz Bay, Antarctic: diversity and characterization of amylases

Zhang, Jinwei; Zeng, Runying

doi:10.1007/s11274-007-9400-0

Cited by 24 publications

(15 citation statements)

References 32 publications

(28 reference statements)

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“…A number of microorganisms show adaptation to their atypically hot or cold niches and therefore show distribution patterns confined to particular regions, for example temperate and polar (Selje et al ., ). These differences are linked to optimum temperature and genotypic and biochemical adaptations that control the functional capability of bacterial proteins (Grzymski et al ., ) such as cold‐adaptive enzymic activity (Zhang & Zeng, ).…”

Section: Discussionmentioning

confidence: 99%

Patterns of marine bacterioplankton biodiversity in the surface waters of the Scotia Arc, Southern Ocean

Jamieson

Rogers

Billett

et al. 2012

FEMS Microbiol Ecol

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Spatial patchiness in marine surface bacterioplankton populations was investigated in the Southern Ocean, where the Antarctic Circumpolar Current meets the islands of the Scotia Arc and is subjected to terrestrial input, upwelling of nutrients and seasonal phytoplankton blooms. Total bacterioplankton population density, group-specific taxonomic distribution and six of eight dominant members of the bacterioplankton community were found to be consistent across 18 nearshore sites at eight locations around the Scotia Arc. Results from seven independent 16S rRNA gene clone libraries (1223 sequences in total) and fluorescent in situ hybridization suggested that microbial assemblages were predominantly homogeneous between Scotia Arc sites, where the Alphaproteobacteria, Gammaproteobacteria and the Cytophaga-Flavobacterium-Bacteroidetes cluster were the dominant bacterial groups. Of the 1223 useable sequences generated, 1087 (89%) shared ≥ 97% similarity with marine microorganisms and 331 (27%) matched published sequences previously detected in permanently cold Arctic and Antarctic marine environments. Taken together, results suggest that the dominant bacterioplankton groups are consistent between locations, but significant differences may be detected across the rare biodiversity.

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Section: Discussionmentioning

confidence: 99%

Patterns of marine bacterioplankton biodiversity in the surface waters of the Scotia Arc, Southern Ocean

Jamieson

Rogers

Billett

et al. 2012

FEMS Microbiol Ecol

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“…As discussed in the "Introduction" section, some species of this genus have been isolated from cold regions, and they have been explored for the production of cold-active amylases. During an investigation on the isolation of psychrotrophic bacteria with cold-adaptive amylolytic, lipolytic or proteolytic activities, bacterial cultures were isolated from deep-sea sediment of Prydz Bay, Antarctica (Zhang and Zeng 2007). The amylase-producing strains belonged to genus Pseudomonas, Rhodococcus and Nocardiopsis.…”

Section: Carbohydrases Obtained From Nocardiopsis Speciesmentioning

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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“…and Nocardiopsis sp. (Zhang and Zeng 2007) have been reported from the Antarctic region. We detected amylase activity in Kocuria sp.…”

Section: Resultsmentioning

confidence: 99%

Identification and biotechnological potential of psychrotrophic marine isolates

Pote¹,

Chaudhary²,

Upadhayay³

et al. 2014

Eurasia J Biosci

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Psychrotrophic amylolytic bacteria from deep sea sediment of Prydz Bay, Antarctic: diversity and characterization of amylases

Cited by 24 publications

References 32 publications

Patterns of marine bacterioplankton biodiversity in the surface waters of the Scotia Arc, Southern Ocean

Patterns of marine bacterioplankton biodiversity in the surface waters of the Scotia Arc, Southern Ocean

Nocardiopsis species as potential sources of diverse and novel extracellular enzymes

Identification and biotechnological potential of psychrotrophic marine isolates

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