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Genomic and functional adaptation in surface ocean planktonic prokaryotes

机译：表层海洋浮游原核生物的基因组和功能适应

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摘要

利用最近获得的从世界各地各种不同海洋环境rn中收集到的137个细菌菌株的基因组序列,再rn加上以前获得的基因组和元基因组数据,rnKenneth Nealson及其同事得以能够了解在海rn洋表面生活的浮游生物群落的生态学的全貌.rn他们发现了两个微生物类别.第个类别包含rn很多微生物种类,它们的数量是难得的丰富,rn似乎适应了一种“随遇而安”的生活方式在rn能量充足的环境中生长很快,而在食物缺乏时rn则生长很慢.第二个类别包含少数几种丰富rn的、普遍的浮游生物,它们通常总是数量很rn多.这些基本上未培养的微生物基因组相对较rn小,可能是通过生长缓慢和维持较少生物质来rn避免被捕食.%The understanding of marine microbial ecology and metabolism has been hampered by the paucity of sequenced reference genomes. To this end, we report the sequencing of 137 diverse marine isolates collected from around the world. We analysed these sequences, along with previously published marine prokaryotic genomes, in the context of marine metagenomic data, to gain insights into the ecology of the surface ocean prokaryotic picoplankton (0.1-3.0 μm size range). The results suggest that the sequenced genomes define two microbial groups: one composed of only a few taxa that are nearly always abundant in picoplanktonic communities, and the other consisting of many microbial taxa that are rarely abundant. The genomic content of the second group suggests that these microbes are capable of slow growth and survival in energy-limited environments, and rapid growth in energy-rich environments. By contrast, the abundant and cosmopolitan picoplanktonic prokaryotes for which there is genomic representation have smaller genomes, are probably capable of only slow growth and seem to be relatively unable to sense or rapidly acclimate to energy-rich conditions. Their genomic features also lead us to propose that one method used to avoid predation by viruses and/or bacterivores is by means of slow growth and the maintenance of low biomass.
机译：利用最近获得的从世界各地各种不同海洋环境rn中收集到的137个细菌菌株的基因组序列,再rn加上以前获得的基因组和元基因组数据,rnKenneth Nealson及其同事得以能够了解在海rn洋表面生活的浮游生物群落的生态学的全貌.rn他们发现了两个微生物类别.第个类别包含rn很多微生物种类,它们的数量是难得的丰富,rn似乎适应了一种“随遇而安”的生活方式在rn能量充足的环境中生长很快,而在食物缺乏时rn则生长很慢.第二个类别包含少数几种丰富rn的、普遍的浮游生物,它们通常总是数量很rn多.这些基本上未培养的微生物基因组相对较rn小,可能是通过生长缓慢和维持较少生物质来rn避免被捕食.%The understanding of marine microbial ecology and metabolism has been hampered by the paucity of sequenced reference genomes. To this end, we report the sequencing of 137 diverse marine isolates collected from around the world. We analysed these sequences, along with previously published marine prokaryotic genomes, in the context of marine metagenomic data, to gain insights into the ecology of the surface ocean prokaryotic picoplankton (0.1-3.0 μm size range). The results suggest that the sequenced genomes define two microbial groups: one composed of only a few taxa that are nearly always abundant in picoplanktonic communities, and the other consisting of many microbial taxa that are rarely abundant. The genomic content of the second group suggests that these microbes are capable of slow growth and survival in energy-limited environments, and rapid growth in energy-rich environments. By contrast, the abundant and cosmopolitan picoplanktonic prokaryotes for which there is genomic representation have smaller genomes, are probably capable of only slow growth and seem to be relatively unable to sense or rapidly acclimate to energy-rich conditions. Their genomic features also lead us to propose that one method used to avoid predation by viruses and/or bacterivores is by means of slow growth and the maintenance of low biomass.

著录项

  • 来源
    《Nature》 |2010年第7320期|p.60-66III|共8页
  • 作者

    Shibu Yooseph; Kenneth H. Nealson; Douglas B. Rusch; John P. McCrow; Christopher L. Dupont; Maria Kim; Justin Johnson; Robert Montgomery; Steve Ferriera; Karen Beeson; Shannon J. Williamson; Andrey Tovchigrechko; Andrew E. Allen; Lisa A. Zeigler; Granger Sutton; Eric Eisenstadt; Yu-Hui Rogers; Robert Friedman; Marvin Frazier; J. Craig Venter;

  • 作者单位

    J. Craig Venter Institute, Rockville, Maryland 20850, USA;

    J. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

    rnJ. Craig Venter Institute, Rockville, Maryland 20850, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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