期刊
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE
卷 38, 期 6, 页码 -出版社
WILEY
DOI: 10.1111/maec.12474
关键词
associated bacterial community; Cochlodinium polykrikoides; free-living bacteria; harmful algal blooms; particle-associated bacteria
资金
- National Research Foundation of Korea [2015M1A5A1041805, 2016R1D1A1A09920198]
- National Institute of Fisheries Science [R2017047]
- National Research Foundation of Korea [2016R1D1A1A09920198] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Harmful algal blooms of the dinoflagellate Cochlodinium polykrikoides are of worldwide environmental concern. Previous field studies have demonstrated the association of such algal blooms with free-living bacteria (FLB) and particle-associated bacteria (PAB). In the present study, we report evidence for bacterial association with C.polykrikoides in laboratory culture. Sampling was performed at different growth stages (lag, exponential and stationary) and pyrosequencing was used to identify taxa. As a result, the community structures of FLB and PAB were elucidated and significant differences between FLB and PAB were identified by hierarchical cluster analysis and the similarity profiles test (p=.05). The relative abundances of bacterial operational taxonomic units distinctly changed in response to the different phases of C.polykrikoides growth. The Roseobacter genus Marivita and the Flavobacterium genus Winogradskyella were dominant in the FLB and PAB associated with C.polykrikoides, respectively. The Roseobacter clade, which has also exhibited associations with C.polykrikoides blooms in field samples, may influence host cell growth through the provision of vitamins.
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