Changes in bacterial community structure associated with phytoplankton succession in outdoor experimental ponds

被引:3
作者
Kobayashi, Yuki [1 ,5 ]
Hodoki, Yoshikuni [2 ]
Ohbayashi, Kako [3 ]
Okuda, Noboru [4 ,6 ]
Nakano, Shin-ichi [4 ]
机构
[1] Acad Sinica, Res Ctr Environm Changes, Taipei 11529, Taiwan
[2] Keio Univ, Dept Biol, Yokohama, Kanagawa 2238521, Japan
[3] Univ Tokyo, Grad Sch Arts & Sci, Dept Gen Syst Studies, Meguro Ku, Tokyo 1538902, Japan
[4] Kyoto Univ, Ctr Ecol Res, Otsu, Shiga 5202113, Japan
[5] Natl Res Inst Fisheries & Environm Inland Sea, Hatsukaichi, Hiroshima 7390452, Japan
[6] Res Inst Human & Nat, Kamigamo, Kyoto 6038047, Japan
关键词
16S RIBOSOMAL-RNA; GRADIENT GEL-ELECTROPHORESIS; SP NOV; PHYLOGENETIC DIVERSITY; GEN; NOV; MICROCYSTIS-AERUGINOSA; CYANOBACTERIAL BLOOMS; MICROBIAL COMMUNITY; MARINE; WATER;
D O I
10.3800/pbr.10.34
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Changes in bacterial community structure were followed in two outdoor experimental ponds. To compare the changes in bacterial community, Microcystis was inoculated into one of the ponds but not to the other one. In both ponds, Chlorophyceae algae from the genera Cosmarium and Scenedesmus were dominant in the first and last months of the study. During the middle period of the study, cyanobacteria were dominant. Microcystis and Aphani-zomenon dominated in one pond, and Planktothrix dominated in the other. To investigate bacterial phylogenetic abundance and these compositions, we used catalyzed reporter deposition fluorescence in situ hybridization (CARD-FISH) and denaturing gradient gel electrophoresis (DGGE). A significant relationship was observed between the number of alpha-proteobacterial operational taxonomic units (OTUs) and the abundance of Chlorophyceae algae (p < 0.001), although no significant relationship was identified between the abundances of the two groups. The sequencing analysis of DGGE bands detected microcystin-degrading bacteria belonging to the alpha-proteobacteria as one of the dominant bacterial phylogenetic groups when Microcystis was the dominant phytoplankton. To our knowledge, this is the first report demonstrating changes in the abundance and composition of bacterial groups during the wax and wane of dominant phytoplankton taxa, using two different molecular methods.
引用
收藏
页码:34 / 44
页数:11
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