Project description
Studying the ecology of giant viruses through mobile genetic elements
Giant viruses resembling bacteria in size infect a broad range of single-celled eukaryotic organisms. They contain large DNA genomes and a peculiar array of mobile genetic elements (MGEs) that may be beneficial to giant viruses. Funded by the European Research Council, the CHIMERA project aims to understand the role of MGEs in the evolution and ecology of giant viruses. Researchers will examine the hypothesis that MGEs are advantageous for viruses in specific environmental setups, for example when they are in direct competition with bacteria that infect the same hosts. The project will also study the distribution of MGEs in natural ecosystems to help elucidate the interplay between viruses, bacteria and hosts.
Objective
"Giant viruses appear to be ubiquitous in soil and aquatic environments, infecting a wide range of protist hosts. As lytic viruses, they are important regulators in nutrient and energy cycles and key influencers of microbial community composition. The recent discovery of giant viruses challenged previous assumptions and blurred the sharp division between viruses and cellular life. Besides large particle sizes, giant viruses possess complex ""chimeric"" genomes, including genes that were likely acquired from their hosts and bacteria that parasitise the same hosts. Unique is the presence of prokaryotic-like mobile genetic elements (MGEs) that are speculated to aid giant viruses in defence against the host immune system or in direct competition for resources with other viruses or bacteria. Contrarily, bacteria may use MGEs to help the hosts counteract viral infections. Our current knowledge on the factors promoting giant virus diversity and maintenance of the virus-host balance in nature, are largely unknown. In the proposed project, I will investigate the role of MGEs in the evolution and ecology of giant viruses. I postulate that the presence of MGEs plays a crucial role in the competition between giant viruses and other parasites infecting the same hosts. Using co-infection experiments, as well as cutting-edge molecular, microscopy, and sequencing techniques, I will investigate viral competitive fitness as well as physical and molecular interactions between selected partners. By developing a highly specific giant virus genome editing tool, I will rigorously test whether MGEs can provide giant viruses with higher fitness. Moreover, I will combine cell sorting with metagenome analysis of two selected habitats, to unravel how MGEs are distributed in a natural ecosystem. My overarching goal is to elucidate the molecular dialogue between viruses, bacteria, and their hosts, and to use MGEs as a tool to trace the evolutionary history of this unique group of viruses."
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences biological sciences microbiology bacteriology
- humanities history and archaeology history
- natural sciences biological sciences microbiology virology
- natural sciences biological sciences ecology ecosystems
- natural sciences biological sciences genetics genomes
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2021-STG
See all projects funded under this callHost institution
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
1010 WIEN
Austria
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.