Antibacterial activities of marine epibiotic bacteria isolated from brown algae of Japan

被引:48
作者
Kanagasabhapathy, Manmadhan
Sasaki, Hideaki
Haldar, Soumya
Yamasaki, Shinji
Nagata, Shinichi
机构
[1] Kobe Univ, Environm Biochem Div, Res Ctr Inland Seas, Higashinada Ku, Kobe, Hyogo 6580022, Japan
[2] Iwaki Meisei Univ, Coll Sci & Engn, Dept Life & Environm Sci, Iwaki, Fukushima 9708551, Japan
[3] Osaka Prefecture Univ, Grad Sch Life & Environm Sci, Lab Int Prevent Epidem, Sakai, Osaka 5998531, Japan
关键词
macroalgae; epibiotic bacteria; antibacterial activity; Bacillus;
D O I
10.1007/BF03175000
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
One hundred and sixteen epibiotic bacteria were isolated from the surface of nine species of brown algae Sargassum serratifolium, Sargassum fusiforme, Sargassum filicinum, Padina arborescens, Undaria pinnatifida, Petalonia fascia, Colpomenia sinuosa, Scytosiphon lomentaria and Ecklonia cava which were collected at Awaji Island, Japan. Primary screening results using disc-diffusion assay revealed that, among the bacteria isolated 20% of epibiotic bacteria exhibited antibacterial activity. Among them, 10 bacteria which showed high antibacterial activity were further studied for their ability against (i) a set of fouling bacteria isolated from marine natural biofilm, (ii) some luminescent Vibrio and Photobacterium species and (iii) a panel of pathogenic bacteria. In general, inhibitory activities were high or moderate against fouling bacteria, Vibrio and Photobacterium species, while they were found to be low against pathogenic bacteria tested. The phylogenetic analysis using 16S rRNA sequencing revealed that all of the bacteria with high antibacterial activity showed a close affiliation with genus Bacillus. This result suggested that the genus Bacillus is efficient producers of antibacterial compounds and these epibiotic bacteria isolated are highly successful colonizers on macroalgal surfaces.
引用
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页码:167 / 173
页数:7
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