| 韩国贝加尔湖南部群集细菌的群落分析 |
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| 引用本文： | Ahn T. S. Kim O. S. Spiglazov L. P Drucker V. V. Hong S-H.. 韩国贝加尔湖南部群集细菌的群落分析[J]. 水生生物学报, 2006, 30(6): 718-720 |
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| 作者姓名： | Ahn T. S. Kim O. S. Spiglazov L. P Drucker V. V. Hong S-H. |
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| 作者单位： | Ahn T. S.（Kangwon National University, Chunchon, 200-701, Korea） Kim O. S.（Kangwon National University, Chunchon, 200-701, Korea） Spiglazov L. P（Limnological Institute, Russian Academy of Science, Irkutsk , 664033, Russia） Drucker V. V.（Limnological Institute, Russian Academy of Science, Irkutsk , 664033, Russia） Hong S-H.（Kangwon National University, Chunchon, 200-701, Korea） |
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| 基金项目： | the Korea Science and Engineering Foundation(2002-201-02-2) |
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| 摘 要： | Bacteria in lake ecosystems can be classified asfree-living and attached.Aggregated bacteria are oftenlarger,present in higher local concentrations and aremore active on a per-cell basis than free-living bacteriain surrounding water[1].Higher specific exoenzyme ac-tivities have also been found with macroaggregates[2].Thus they may have an important role in carbon cyclingin aquatic ecosystems.Recently,new molecular techniques such as fluo-rescent in situ hybridization(FISH)with group-specific…
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| 文章编号： | 1000-3207(2006)06-0718-03 |
| 修稿时间： | 2004-11-04 |
COMMUNITY ANALYSIS OF AGGREGATED BACTERIA IN SOUTHERN LAKE BAIKAL |
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| Ahn T. S.,Kim O. S.,Spiglazov L. P,Drucker V. V.,Hong S-H.. COMMUNITY ANALYSIS OF AGGREGATED BACTERIA IN SOUTHERN LAKE BAIKAL[J]. Acta Hydrobiologica Sinica, 2006, 30(6): 718-720 |
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| Authors: | Ahn T. S. Kim O. S. Spiglazov L. P Drucker V. V. Hong S-H. |
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| Abstract: | This study focuses on the community structure of aggregated bacteria in Lake Baikal and relationships with free-living bacteria.Fluorescent in situ hybridization (FISH) methods were used in samples of bacteria taken in April, 2001. Bacterial counts of free-living ranged from 52.3 to 74.1% in free-living bacteria and from 39.6 to 66.7% in aggregated bacteria, respectively. Community composition of aggregated bacteria was very different from free-living bacteria, especially at 25m depth where highest phytoplankton numbers were observed. The vertical profile of aggregated bacteria community was very characteristic. Beta-Proteobacteria increased with depth down to 100m. At 250m, gamma-Proteobacteria was 44% of DAPI bound cells, while other groups were less than 1%. We conclude that community structures of free-living and aggregated bacteria were different, and they may sustain the ecosystem in independent ways. |
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| Keywords: | Bacterial aggregates Community structure FISH Lake Baikal |
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