Functional role and ecotype divergence in freshwater ultramicrobacteria

淡水超微生物的功能作用和生态型差异

基本信息

项目摘要

Prokaryotic microorganisms in freshwater habitats are centrally involved in carbon turnover processes, yet individual microbial populations greatly differ in their respective metabolic and ecological features. The pelagic zone of freshwater systems is typically dominated by freely suspended ultramicrobacteria. The proposed project will study the functional differences and similarities of three monophyletic groups of freshwater ultramicrobacteria (P. necessarius, actinobacteria from the Ac1 clade and alphaproteobacteria affiliated with the LD12 lineage). It will furthermore investigate the sorting of physiologically and genotypically distinct ecotypes within each group by their specific habitats. Single-cell approaches will be combined with (meta)genomic and transcriptomic analyses both on available isolates and on uncultured ultramicrobacteria in experimental studies and comparative in situ investigations in different habitats, and the diversity and expression of functional genes (e.g., bacterial rhodopsins) will be assessed. The different levels of interactions and common activities envisaged in the proposed project will for the first time allow a synoptic view of the functional roles and phylogeographic distribution patterns of freshwater ultramicrobacteria that could not be achieved otherwise. It also offers a chance to European scientists to take a leading role in freshwater microbiology through the concerted development and application of novel functional genomic research tools.
淡水生境中的原生微生物主要参与碳周转过程,但个体微生物种群在各自的代谢和生态特征方面存在很大差异。淡水系统的浮游层通常由自由悬浮的超微细菌控制。拟议的项目将研究淡水超微细菌的三个单系群(P.necessarius、Ac1分支的放线菌和隶属于LD 12谱系的α变形菌)的功能差异和相似性。它还将调查按其特定生境对每组内生理和基因型不同的生态类型进行分类。单细胞方法将与(Meta)基因组和转录组学分析相结合,对实验研究中的可用分离物和未培养的超微细菌进行分析,并在不同生境中进行原位比较研究,以及功能基因的多样性和表达(例如,细菌视紫红质)。拟议项目中设想的不同层次的相互作用和共同活动将首次使人们能够对淡水超微生物菌的功能作用和地理分布模式有一个全面的了解,这是其他方式无法实现的。它还为欧洲科学家提供了一个机会,通过共同开发和应用新的功能基因组研究工具,在淡水微生物学方面发挥主导作用。

项目成果

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Professor Dr. Hans-Peter Grossart其他文献

Professor Dr. Hans-Peter Grossart的其他文献

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{{ truncateString('Professor Dr. Hans-Peter Grossart', 18)}}的其他基金

Ecological role of fungal parasites on benthic diatoms of polar coastal waters
极地沿海水域底栖硅藻真菌寄生虫的生态作用
  • 批准号:
    424170377
  • 财政年份:
    2019
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    --
  • 项目类别:
    Infrastructure Priority Programmes
Alternative states of a simple predator-prey system induced by competition between small edible and large inedible algae and fungal parasitism (APPS)
由小型可食用藻类和大型不可食用藻类之间的竞争以及真菌寄生引起的简单捕食者-猎物系统的替代状态(APPS)
  • 批准号:
    394716440
  • 财政年份:
    2017
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    --
  • 项目类别:
    Priority Programmes
Mortality of zooplankton in lake ecosystems and its contribution to vertical carbon fluxes (ZooFlux)
湖泊生态系统中浮游动物的死亡率及其对垂直碳通量的贡献(ZooFlux)
  • 批准号:
    319532628
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Comparing phenotypic plasticity in bacterial prey traits and ecological consequences by using specialist vs. generalist strains and organic aggregates as model systems
通过使用专业菌株和通才菌株和有机聚集体作为模型系统,比较细菌猎物特征的表型可塑性和生态后果
  • 批准号:
    257346203
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Evaluation and quantification of microbial degradation of allochthonous organic matter by "priming" (MicroPrime)
通过“引发”对异地有机物的微生物降解进行评估和定量(MicroPrime)
  • 批准号:
    256575941
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Revising the methane cycling in lakes: sources and sinks in two German lakes with specific consideration of methane accumulation in oxic waters
修改湖泊中的甲烷循环:德国两个湖泊的源和汇,特别考虑含氧水域中的甲烷积累
  • 批准号:
    241479293
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Bacteria-zooplankton interactions: a key to understanding bacterial dynamics and biogeochemical processes in lakes?
细菌-浮游动物相互作用:了解湖泊细菌动力学和生物地球化学过程的关键?
  • 批准号:
    201319348
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Auswirkung interner Wellen auf mikrobielle Habitate kund Aktivitäten sowie den Stoffaustausch an der Wasser-Sediment-Grenzschicht des Stechlinsees
内波对施特奇林湖水-沉积物界面微生物栖息地、活动及物质交换的影响
  • 批准号:
    75711677
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Veränderungen in der Struktur und Funktion pelagischer Bakterien während und nach der Restauration des Tiefwarensees
蒂夫瓦伦湖恢复期间和恢复后中上层细菌结构和功能的变化
  • 批准号:
    39400205
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Effects of climate variability on interactions between cyanobacteria and associated microheterotrophs-consequences for development of toxic cyanobacterial blooms
气候变化对蓝藻和相关微型异养生物之间相互作用的影响——对有毒蓝藻水华发展的影响
  • 批准号:
    28750711
  • 财政年份:
    2006
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes

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