Next Article in Journal
Subereamolline A as a Potent Breast Cancer Migration, Invasion and Proliferation Inhibitor and Bioactive Dibrominated Alkaloids from the Red Sea Sponge Pseudoceratina arabica
Previous Article in Journal
Isolation and Structure Elucidation of GM4-Type Gangliosides from the Okinawan Starfish Protoreaster nodosus
Open AccessArticle

Cultivable Alginate Lyase-Excreting Bacteria Associated with the Arctic Brown Alga Laminaria

State Key Lab of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Jinan 250100, China
Author to whom correspondence should be addressed.
Mar. Drugs 2012, 10(11), 2481-2491;
Received: 15 August 2012 / Revised: 24 September 2012 / Accepted: 26 October 2012 / Published: 6 November 2012
Although some alginate lyases have been isolated from marine bacteria, alginate lyases-excreting bacteria from the Arctic alga have not yet been investigated. Here, the diversity of the bacteria associated with the brown alga Laminaria from the Arctic Ocean was investigated for the first time. Sixty five strains belonging to nine genera were recovered from six Laminaria samples, in which Psychrobacter (33/65), Psychromonas (10/65) and Polaribacter (8/65) were the predominant groups. Moreover, 21 alginate lyase-excreting strains were further screened from these Laminaria-associated bacteria. These alginate lyase-excreting strains belong to five genera. Psychromonas (8/21), Psedoalteromonas (6/21) and Polaribacter (4/21) are the predominant genera, and Psychrobacter, Winogradskyella, Psychromonas and Polaribacter were first found to produce alginate lyases. The optimal temperatures for the growth and algiante lyase production of many strains were as low as 10–20 °C, indicating that they are psychrophilic bacteria. The alginate lyases produced by 11 strains showed the highest activity at 20–30 °C, indicating that these enzymes are cold-adapted enzymes. Some strians showed high levels of extracellular alginate lyase activity around 200 U/mL. These results suggest that these algiante lyase-excreting bacteria from the Arctic alga are good materials for studying bacterial cold-adapted alginate lyases. View Full-Text
Keywords: alginate lyase-excreting bacteria; psychrophilic; Arctic; Laminaria; diversity alginate lyase-excreting bacteria; psychrophilic; Arctic; Laminaria; diversity
Show Figures

Figure 1

MDPI and ACS Style

Dong, S.; Yang, J.; Zhang, X.-Y.; Shi, M.; Song, X.-Y.; Chen, X.-L.; Zhang, Y.-Z. Cultivable Alginate Lyase-Excreting Bacteria Associated with the Arctic Brown Alga Laminaria. Mar. Drugs 2012, 10, 2481-2491.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

Only visits after 24 November 2015 are recorded.
Search more from Scilit
Back to TopTop