Isolation and characterization of an Antarctic Flavobacterium strain with agarase and alginate lyase activities

Several bacteria that are associated with macroalgae can use phycocolloids as a carbon source. Strain INACH002, isolated from decomposing Porphyra (Rhodophyta), in King George Island, Antarctica, was screened and characterized for the ability to produce agarase and alginate-lyase enzymatic activitie...

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Bibliographic Details
Published in:Polish Polar Research
Main Authors: Lavín Paris, Atala Cristian, Gallardo-Cerda Jorge, Gonzalez-Aravena Marcelo, De La Iglesia Rodrigo, Oses Rómulo, Torres-Díaz Cristian, Trefault Nicole, Molina-Montenegro Marco A., Laughinghouse IV H. Dail
Format: Article in Journal/Newspaper
Language:English
Published: Polish Academy of Sciences 2016
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Online Access:https://doi.org/10.1515/popore-2016-0021
https://doaj.org/article/ff265506c71441fcad7a700bc61bbfbf
Description
Summary:Several bacteria that are associated with macroalgae can use phycocolloids as a carbon source. Strain INACH002, isolated from decomposing Porphyra (Rhodophyta), in King George Island, Antarctica, was screened and characterized for the ability to produce agarase and alginate-lyase enzymatic activities. Our strain INACH002 was identified as a member of the genus Flavobacterium, closely related to Flavobacterium faecale, using 16S rRNA gene analysis. The INACH002 strain was characterized as psychrotrophic due to its optimal temperature (17ºC) and maximum temperature (20°C) of growth. Agarase and alginate-lyase displayed enzymatic activities within a range of 10°C to 50°C, with differences in the optimal temperature to hydrolyze agar (50°C), agarose (50°C) and alginate (30°C) during the first 30 min of activity. Strain Flavobacterium INACH002 is a promising Antarctic biotechnological resource; however, further research is required to illustrate the structural and functional bases of the enzymatic performance observed during the degradation of different substrates at different temperatures.