Psychrophilic α-amylase from Aeromonas veronii NS07 isolated from farm soils

Samie, Nima; Noghabi, Kambiz Akbari; Gharegozloo, Zahra; Zahiri, Hossien Shahbani; Ahmadian, Gholamreza; Sharafi, Hakimeh; Behrozi, Reza; Vali, Hojatollah

doi:10.1016/j.procbio.2012.05.007

Cited by 30 publications

(9 citation statements)

References 26 publications

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“…The relative abundance of the capacity for polysaccharide hydrolysis (amyA) correlated with those for oxygenic photosynthesis and carbon fixation at only 9.0 m (S4 Table), where mats are oxygenated to a greater extent than at any other depth, and likely throughout the year [34]. Psychrophilic organisms that encode amyA are generally aerobes [58][59][60] and may be more efficient at polysaccharide hydrolysis in oxic environments [61]. The relative scarcity of genes encoding anoxygenic photosynthesis (absence of pscA and very low relative abundance of pufL) is interesting in the context of previous work indicating that anoxygenic phototrophs are often abundant in low-light environments (e.g., [62,63]).…”

Section: Plos Onementioning

confidence: 99%

Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica

et al. 2020

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Ecological theories posit that heterogeneity in environmental conditions greatly affects community structure and function. However, the degree to which ecological theory developed using plant-and animal-dominated systems applies to microbiomes is unclear. Investigating the metabolic strategies found in microbiomes are particularly informative for testing the universality of ecological theories because microorganisms have far wider metabolic capacity than plants and animals. We used metagenomic analyses to explore the relationships between the energy and physicochemical gradients in Lake Fryxell and the metabolic capacity of its benthic microbiome. Statistical analysis of the relative abundance of metabolic marker genes and gene family diversity shows that oxygenic photosynthesis, carbon fixation, and flavin-based electron bifurcation differentiate mats growing in different environmental conditions. The pattern of gene family diversity points to the likely importance of temporal environmental heterogeneity in addition to resource gradients. Overall, we found that the environmental heterogeneity of photosynthetically active radiation (PAR) and oxygen concentration ([O 2 ]) in Lake Fryxell provide the framework by which metabolic diversity and composition of the community is structured, in accordance with its phylogenetic structure. The organization of the resulting microbial ecosystems are consistent with the maximum power principle and the species sorting model.

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Section: Plos Onementioning

confidence: 99%

Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica

et al. 2020

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“…α-Amylase production has been reported from thermophilic and hyperthermophilic bacteria and archaea like Pyrococcus, Thermococcus , and Sulfolobus species (Leuschner and Antranikian, 1995 ; Sunna et al, 1997 ), G. thermoleovorans (Rao and Satyanarayana, 2007a ), B. acidocaldarius (Buonocore et al, 1976 ), and Alicyclobacillus sp. A4 (Bai et al, 2012 ), from mesophiles B. amyloliquifaciens (Gangadharan et al, 2008 ), Halomonas meridiana (Coronado et al, 2000a ) B. subtilis (Ravindar and Elangovan, 2013 ), Lactobacillus plantarum (Kanpiengjai et al, 2015 ) as well as from psychrotolerants and psychrophiles Microbacterium foliorum GA2 (Roohi and Kuddus, 2014 ) and Aeromonas veronii NS07 (Samie et al, 2012 ). Among different carbon sources used, starch, fructose, glucose, and rice flour, are known to support high enzyme production (Ezeji et al, 2005 ; Prakash et al, 2009 ).…”

Section: Production and Characterization Of α-Amylasesmentioning

confidence: 99%

Bacterial and Archaeal α-Amylases: Diversity and Amelioration of the Desirable Characteristics for Industrial Applications

2016

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Industrial enzyme market has been projected to reach US$ 6.2 billion by 2020. Major reasons for continuous rise in the global sales of microbial enzymes are because of increase in the demand for consumer goods and biofuels. Among major industrial enzymes that find applications in baking, alcohol, detergent, and textile industries are α-amylases. These are produced by a variety of microbes, which randomly cleave α-1,4-glycosidic linkages in starch leading to the formation of limit dextrins. α-Amylases from different microbial sources vary in their properties, thus, suit specific applications. This review focuses on the native and recombinant α-amylases from bacteria and archaea, their production and the advancements in the molecular biology, protein engineering and structural studies, which aid in ameliorating their properties to suit the targeted industrial applications.

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“…To determine the stability of enzyme, the enzyme was pre-incubated in the same buffer systems utilized for enzyme activity for 60 min at 4 °C. The enzyme activity in the standard reaction mixture was taken as a control (Samie et al, 2012). The residual activity was assayed by standard DNS method.…”

Section: Effect Of Ph On Enzyme Activity and Stabilitymentioning

confidence: 99%

“…The non-heated enzyme was considered as a control (Samie et al, 2012). The residual activity was assayed by standard DNS method.…”

Section: Effect Of Temperature On Enzyme Activity and Stabilitymentioning

confidence: 99%

Enhanced production of amylase from Bacillus sp. using groundnut shell and cassava waste as a substrate under process optimization: Waste to wealth approach

Selvam¹,

Selvankumar²,

Rajiniganth³

et al. 2016

Biocatalysis and Agricultural Biotechnology

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Psychrophilic α-amylase from Aeromonas veronii NS07 isolated from farm soils

Cited by 30 publications

References 26 publications

Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica

Environmental control on the distribution of metabolic strategies of benthic microbial mats in Lake Fryxell, Antarctica

Bacterial and Archaeal α-Amylases: Diversity and Amelioration of the Desirable Characteristics for Industrial Applications

Enhanced production of amylase from Bacillus sp. using groundnut shell and cassava waste as a substrate under process optimization: Waste to wealth approach

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