International comparison of prokaryotic biomass and biodiversity in ODP Leg 201 samples

ODP Leg 201 样品中原核生物量和生物多样性的国际比较

• 批准号: NE/G001049/1
• 负责人: Ronald Parkes
• 金额: $ 1.94万
• 依托单位: CARDIFF UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FG001049%2F1
• 关键词: International; comparison; prokaryotic; biomass; biodiversity

Although the sub-seafloor biosphere has been estimated to contain a large proportion of the worlds living organisms and the majority of all bacteria, we know little about these bacteria as few can be cultured. Biodiversity estimates based on DNA analysis disagree markedly, even at the highest level (Domain- Archaea or Bacteria being dominant). Also, it has been suggested that bacterial numbers may be much higher (x 10) than previously estimated. These problems may be due to biases in the different methods used by various researchers worldwide. To explore this possibility an international sample comparison has been set up. Cardiff University is the only UK laboratory invited to take part in this initiative and this project requests funding to enable Cardiff to participate in this comparison. The results of this international comparison has profound implications for the determination of biomass and biodiversity in potentially the largest bacterial habitat on Earth and also has implications for similar determinations in other terrestrial sediment and soil environments, as well as subsurface environments on other planets.

虽然据估计海底生物圈包含了世界上大部分的生物体和大多数的细菌，但我们对这些细菌知之甚少，因为很少有细菌可以培养。基于DNA分析的生物多样性估计明显不一致，即使在最高水平（领域-古细菌或细菌占主导地位）。此外，有人认为细菌数量可能比先前估计的要高得多（× 10）。这些问题可能是由于世界各地不同研究人员使用的不同方法存在偏差。为了探索这种可能性，建立了一个国际样本比较。卡迪夫大学是唯一被邀请参加这一倡议的英国实验室，该项目要求资金使卡迪夫能够参与这一比较。这一国际比较的结果对确定地球上可能最大的细菌栖息地的生物量和生物多样性具有深远的意义，也对确定其他陆地沉积物和土壤环境以及其他行星上的地下环境具有类似的意义。

项目成果

24th International Meeting on Organic Geochemistry, Bremen, Germany, September 6-11, 2009

第 24 届国际有机地球化学会议，德国不来梅，2009 年 9 月 6-11 日

• DOI: 10.1016/j.orggeochem.2010.06.006
• 发表时间: 2010
• 期刊: Organic Geochemistry
• 影响因子: 3
• 作者: Hinrichs K