Agar-degrading bacteria isolated from Antarctic macroalgae

This study describes the taxonomic diversity of pigmented, agar-degrading bacteria isolated from the surface of macroalgae collected in King George Island, Antarctica. A total of 30 pigmented, agarolytic bacteria were isolated from the surface of the Antarctic macroalgae Adenocystis utricularis, Mon...

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Bibliographic Details
Published in:Folia microbiologica 2017-09, Vol.62 (5), p.409-416
Main Authors: Alvarado, Roxana, Leiva, Sergio
Format: Article
Language:English
Subjects:
Agar
Agar - metabolism
Agarase
Algae
Antarctic Regions
Applied Microbiology
Arthrobacter
Bacteria
Bacteria - classification
Bacteria - genetics
Bacteria - isolation & purification
Bacteria - metabolism
Biodegradation
Biomedical and Life Sciences
Biotechnology
Cell culture
Degradation
DNA, Bacterial - chemistry
DNA, Bacterial - genetics
DNA, Ribosomal - chemistry
DNA, Ribosomal - genetics
Environmental Engineering/Biotechnology
Genera
Immunology
Isotopes
Life Sciences
Microbial activity
Microbiology
Microorganisms
Phylogeny
Pigments, Biological - analysis
RNA, Ribosomal, 16S - genetics
rRNA 16S
Seaweed - microbiology
Seaweeds
Sequence Analysis, DNA
Temperature
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Summary:This study describes the taxonomic diversity of pigmented, agar-degrading bacteria isolated from the surface of macroalgae collected in King George Island, Antarctica. A total of 30 pigmented, agarolytic bacteria were isolated from the surface of the Antarctic macroalgae Adenocystis utricularis, Monostroma hariotii, Iridaea cordata , and Pantoneura plocamioides . Based on the 16S rRNA data, the agarolytic isolates were affiliated to the genera Algibacter , Arthrobacter , Brachybacterium , Cellulophaga , Citricoccus , Labedella , Microbacterium , Micrococcus , Salinibacterium , Sanguibacter , and Zobellia . Isolates phylogenetically related to Cellulophaga algicola showed the highest agarase activity in culture supernatants when tested at 4 and 37 °C. This is the first investigation of pigmented agar-degrading bacteria, members of microbial communities associated with Antarctic macroalgae, and the results suggest that they represent a potential source of cold-adapted agarases of possible biotechnological interest.
ISSN:0015-5632
1874-9356
DOI:10.1007/s12223-017-0511-1