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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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More than 20 and 10 clades / ecotypes of Synechococcus and Prochlorococcus, respectively, have been identified in various oceanic regions. However, their diversity has yet to be thoroughly studied in the northwest Pacific Ocean. Further, spatial distribution of Synechococcus clades in the oligotrophic oceans has been scarcely characterized. To elucidate picocyanobacterial lineage distribution in the northwest Pacific Ocean, 16S-23S internal transcribed spacer sequences of picocyanobacteria were sequenced by barcoded amplicon pyrosequencing method. Additional pyrosequencing library using a primer specific for the Synechococcus subcluster-5.1 was constructed to thoroughly understand Synechococcus diversity in the oligotrophic oceans. In warm pool area, Prochlorococcus was predominant and showed a distinct depthpartitioning between HLII and LL ecotypes. Despite low abundances, diverse Synechococcus clades appeared in the oligotrophic open ocean, showing both vertical and horizontal niche partitioning. Clade II was the predominant Synechococcus clade, especially in upper euphotic depths. In shallow and middle euphotic depths, clades UC-A, III, and CRD1 were distributed broadly. However, a distinct shift in the horizontal distribution was found at ca. $20^{\circ}N$. Conversely, clades XVII and CRD2 dominated at deep euphotic depths and constituted a higher proportion than clade II. These niche-partitioning of Synechococcus clades seemed to be related with temperature, nutrient concentration as well as iron concentration.
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참고문헌 (47)
참고문헌 신청
Ahlgren, N. A / 2006 / Culture isolation and culture-independent clone libraries reveal new marine Synechococcus ecotypes with distinctive light and N physiologies / Appl. Environ. Microbiol 72:7193~7204
Ahlgren, N. A / 2006 / Measurement of Prochlorococcus ecotypes using real-time polymerase chain reaction reveals different abundances of genotypes with similar light physiologies / Environ. Microbiol 8:441~454
Apple, J. K / 2011 / Variability in protist grazing and growth on different marine Synechococcus isolates / Appl. Environ. Microbiol 77:3074~3084
Belkin, I. M / 2009 / Rapid warming of large marine ecosystems / Prog. Oceanogr 81:207~213
Campbell, L / 1993 / Photosynthetic picoplankton community structure in the subtropical North Pacific Ocean near Hawaii (Station Aloha) / Deep-Sea Res. Part I Oceanogr. Res. Pap 40:2043~2060
Ahlgren, N. A / 2006 / Measurement of Prochlorococcus ecotypes using real-time polymerase chain reaction reveals different abundances of genotypes with similar light physiologies / Environ. Microbiol 8:441~454
Apple, J. K / 2011 / Variability in protist grazing and growth on different marine Synechococcus isolates / Appl. Environ. Microbiol 77:3074~3084
Belkin, I. M / 2009 / Rapid warming of large marine ecosystems / Prog. Oceanogr 81:207~213
Campbell, L / 1993 / Photosynthetic picoplankton community structure in the subtropical North Pacific Ocean near Hawaii (Station Aloha) / Deep-Sea Res. Part I Oceanogr. Res. Pap 40:2043~2060
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