Identification of photoheterotrophic microorganisms in temperate freshwater lakes

温带淡水湖泊光异养微生物的鉴定

基本信息

项目摘要

Fuelled by solar energy and performed by microscopic algae, or phytoplankton, photosynthesis is the primary source of productivity in aquatic ecosystems. However, recent studies suggest that microorganisms with previously unknown capabilities for harnessing solar energy, the so-called photoheterotrophs, are abundant in the oceans and are present in freshwater ecosystems as well. In contrast to algae, which completely depend on chlorophyll-based photosynthesis for their growth, photoheterotrophs use pigments called rhodopsins and bacteriochlorophylls to convert solar energy into a food supplement to their predominant diet of ingested organic matter. The aim of this project is to discover, describe, and document the predominant organisms that make up this unusual group of phytoplankton in temperate freshwater lakes. Due to their light-harvesting capacity and amenability to genetic engineering, photoheterotrophs may be useful in future bioenergy production systems. Research results will provide baseline information for freshwater phytoplankton bioprospecting, in a search for potentially useful microorganisms. The broader impacts of this work also include further development of cutting-edge research technologies, such as the study of a complete genome of a single cell, infrared epifluorescence microscopy for visualizing phytoplankton, and fluorescence-activated cell sorting to isolate and study phytoplankton cells for experiments. One postdoctoral associate and up to three undergraduate students will be trained during the course of the project, with particular effort placed on recruiting Native American students. Wide dissemination of research results will be achieved by workshops and advanced courses to the scientific community, as well as through diverse outreach activities to the general public.
光合作用是水生生态系统生产力的主要来源,它由太阳能提供燃料,并由微型藻类或浮游植物进行。 然而,最近的研究表明,具有以前未知的利用太阳能能力的微生物,即所谓的光异养生物,在海洋中非常丰富,也存在于淡水生态系统中。与完全依赖叶绿素光合作用生长的藻类不同,光异养生物使用称为视紫红质和细菌叶绿素的色素将太阳能转化为食物补充剂,以补充其主要的有机物饮食。该项目的目的是发现,描述和记录在温带淡水湖泊中构成这种不寻常的浮游植物群的主要生物。由于它们的捕光能力和对基因工程的顺从性,光异养生物可能在未来的生物能源生产系统中有用。 研究结果将为淡水浮游植物生物勘探提供基线信息,以寻找潜在的有用微生物。 这项工作的更广泛影响还包括进一步发展尖端研究技术,如研究单个细胞的完整基因组、观察浮游植物的红外荧光显微镜、以及分离和研究浮游植物细胞供实验用的荧光激活细胞分选。 一名博士后助理和最多三名本科生将在项目过程中接受培训,并特别努力招募美洲原住民学生。 将通过为科学界举办讲习班和高级课程,以及通过面向公众的各种外联活动,广泛传播研究成果。

项目成果

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Ramunas Stepanauskas其他文献

Genomic insights into the niche adaptation of marine Thaumarchaeota along the water column from the sea surface to hadal ocean
海洋奇古菌从海面到深渊水柱沿线生态位适应的基因组见解
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Takuro Nunoura;Yoshihiro Takaki;Aya Shuto;Ramunas Stepanauskas;Ken Takai
  • 通讯作者:
    Ken Takai
生命の教養学X「新生」(分担執筆で「昆虫の新生 変態と擬態」を担当
文科与生命科学
  • DOI:
  • 发表时间:
    2014
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Takuro Nunoura;Yoshihiro Takaki;Aya Shuto;Ramunas Stepanauskas;Ken Takai;藤原晴彦
  • 通讯作者:
    藤原晴彦
Single-cell genomics revealed niche separation of marine Thaumarchaeota along the water column on the Ogasawara Trench
单细胞基因组学揭示了小笠原海沟水柱上海洋奇古菌的生态位分离
  • DOI:
  • 发表时间:
    2014
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Takuro Nunoura;Yoshihiro Takaki;Aya Shuto;Ramunas Stepanauskas;Ken Takai
  • 通讯作者:
    Ken Takai
Comparative single-cell genomics reveals potential ecological niches for the freshwater acI Actinobacteria lineage
比较单细胞基因组学揭示了淡水放线菌谱系的潜在生态位
  • DOI:
    10.1038/ismej.2014.135
  • 发表时间:
    2014-08-05
  • 期刊:
  • 影响因子:
    10.000
  • 作者:
    Trevor W Ghylin;Sarahi L Garcia;Francisco Moya;Ben O Oyserman;Patrick Schwientek;Katrina T Forest;James Mutschler;Jeffrey Dwulit-Smith;Leong-Keat Chan;Manuel Martinez-Garcia;Alexander Sczyrba;Ramunas Stepanauskas;Hans-Peter Grossart;Tanja Woyke;Falk Warnecke;Rex Malmstrom;Stefan Bertilsson;Katherine D McMahon
  • 通讯作者:
    Katherine D McMahon

Ramunas Stepanauskas的其他文献

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{{ truncateString('Ramunas Stepanauskas', 18)}}的其他基金

EAGER: Microencapsulation-based genomics of individual RNA viruses
EAGER:基于微胶囊的单个 RNA 病毒基因组学
  • 批准号:
    2231327
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
EAGER: Encapsulation and sequencing of extracellular DNA
EAGER:细胞外 DNA 的封装和测序
  • 批准号:
    2116253
  • 财政年份:
    2021
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
RII Track-2 FEC: Single Cell Genome-to-Phenome: Integrating Genome and Phenome Analyses of Individual Microbial Cells in Complex Microbiomes
RII Track-2 FEC:单细胞基因组到表型组:复杂微生物组中单个微生物细胞的基因组和表型组分析整合
  • 批准号:
    1826734
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Cooperative Agreement
Development and validation of an imaging cell sorter for integrated single cell genome and morphology analyses
用于集成单细胞基因组和形态分析的成像细胞分选仪的开发和验证
  • 批准号:
    1829879
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative research: Untangling the Deep Genealogy of Microbial Dark Matter
合作研究:解开微生物暗物质的深层谱系
  • 批准号:
    1441717
  • 财政年份:
    2014
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
MRI: Acquisition of genome sequencers for Bigelow Laboratory for Ocean Sciences
MRI:为毕格罗海洋科学实验室采购基因组测序仪
  • 批准号:
    1335810
  • 财政年份:
    2013
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Ocean's dark energy: Global inventory of chemoautotrophs in the aphotic realm
海洋的暗能量:无光领域化能自养生物的全球清单
  • 批准号:
    1232982
  • 财政年份:
    2012
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
EAGER: Collaborative Research: Exploratory application of single-molecule real time (SMRT) DNA sequencing in microbial ecology research
EAGER:协作研究:单分子实时 (SMRT) DNA 测序在微生物生态学研究中的探索性应用
  • 批准号:
    1148017
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Dimensions: Collaborative Research: An Integrated Study of Energy Metabolism, Carbon Fixation, and Colonization Mechanisms in Chemosynthetic Microbial Communities at Deep-Sea Vents
维度:合作研究:深海喷口化学合成微生物群落能量代谢、碳固定和定植机制的综合研究
  • 批准号:
    1136488
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
MRI: Acquisition of equipment for microbial single cell genomics research
MRI:购置微生物单细胞基因组学研究设备
  • 批准号:
    0821374
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Standard Grant

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New technologies for wastewater resource recovery by anoxigenic photoheterotrophic biological processes
缺氧光异养生物过程废水资源化新技术
  • 批准号:
    RGPIN-2016-06498
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New technologies for wastewater resource recovery by anoxigenic photoheterotrophic biological processes
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New technologies for wastewater resource recovery by anoxigenic photoheterotrophic biological processes
缺氧光异养生物过程废水资源化新技术
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New technologies for wastewater resource recovery by anoxigenic photoheterotrophic biological processes
缺氧光异养生物过程废水资源化新技术
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Elucidating the regulatory network of light harvesting in photoheterotrophic microalgae
阐明光异养微藻中光收集的调控网络
  • 批准号:
    310496771
  • 财政年份:
    2016
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Engineered Themosynechococcus elongatus mutant growing under photoheterotrophic conditions
在光异养条件下生长的工程细长嗜聚球藻突变体
  • 批准号:
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