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Single-cell phylogenomic exploration of archaeal dark matter

Objective

While the archaeal domain of life was discovered more than 30 years ago, the biology of archaeal organisms remains to be relatively obscure, especially when compared to that of bacterial and eukaryotic life. Yet, despite the limited knowledge regarding their lifestyle and ecological relevance, evidence is mounting that certain archaea play key roles in global nitrogen and carbon cycles. In addition, archaea share a common branch in the tree of life with the eukaryotes, and have most likely played a prominent role in the emergence of the eukaryotic cell, and thus of complex life. Interestingly, recent ecological surveys have started to reveal a hidden diversity of archaeal life. The exploration of this supposed ‘archaeal dark matter’ might thus hold relevance for a number of fundamental issues and reveal profound insights about the diversity, ecology and evolution of the archaeal domain of life. Unfortunately, characterization of these uncultured lineages is procrastinated by limitations in cultivation techniques and limited availability of genetic tools, urging for the exploration of alternative strategies to do so.
Here I am proposing to utilize a single-cell phylogenomics approach to explore novel archaeal lineages at the genomic level. Habitats hosting novel archaea will be sampled and single-cell genome sequencing will be performed using next-generation sequencing technology. The proposed strategy will result in (1) obtaining a better sampling of archaeal genomes, (2) gaining insight in the evolutionary history of the archaeal domain of life through phylogenomics, and (3) obtaining information regarding the biology and lifestyle of these novel archaeal lineages. This work will dramatically increase the number of archaeal genomes available in public databases for both researchers studying the physiology of archaea in different environments and also for evolutionary biologists tracing the evolutionary history of the three domains of life.

Field of science

  • /natural sciences/computer and information sciences/databases
  • /natural sciences/biological sciences/ecology
  • /natural sciences/chemical sciences/inorganic chemistry/inorganic compounds
  • /natural sciences/biological sciences/genetics and heredity/genome
  • /humanities/history and archaeology/history
  • /medical and health sciences/basic medicine/physiology
  • /natural sciences/physical sciences/astronomy/astrophysics/dark matter

Call for proposal

FP7-PEOPLE-2012-IIF
See other projects for this call

Funding Scheme

MC-IIF - International Incoming Fellowships (IIF)

Coordinator

UPPSALA UNIVERSITET
Address
Von Kraemers Alle 4
751 05 Uppsala
Sweden
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 197 811,60
Administrative Contact
Sofia Sundbaum (Ms.)