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The domestication, evolution, and adaptive role of horizontal gene transfer in eukaryotes.

Project description

Horizontal gene transfer and evolution

Acquisition of novel genes is a fundamental part of the evolutionary process in eukaryotes, providing cells with new functions to adapt to their environments. Horizontal gene transfer (HGT), the movement of genetic material between species (particularly from bacteria or viruses) is known to facilitate the acquisition of new functions in eukaryotic genomes. Yet, the new genes are frequently lost by lineages unless they can navigate evolutionary barriers. With the support of the Marie Skłodowska-Curie Actions programme, the DeNovo-HGT project will employ Chlamydomonas reinhardtii as a model organism to investigate the integration and evolutionary fate of a bacterial gene in real time. Using experimental evolution, the study will clarify the role of HGT in genomic stability and adaptation.

Objective

The emergence and acquisition of new genes play a crucial role in the evolution of eukaryotes, providing new functions that contribute to adapting to changing environments and conquering unexplored niches through cellular innovations. Horizontal gene transfer (HGT), defined as the acquisition of genetic material from different species, has been shown to play a key role in eukaryotic genome evolution. HGT, particularly from bacteria and viruses, provides unprecedented adaptive potential by introducing novel functions into eukaryotic cells. However, new genes are often quickly lost because important constraints and evolutionary barriers need to be overcome for successful integration into the host genome. Despite the importance of HGT for eukaryotic biology, how this process works is still unclear and the mechanisms that contribute to the domestication of foreign genes, especially at the early stages, are unexplored. This project aims to develop a new experimental model for investigating HGT in eukaryotes using the green alga Chlamydomonas reinhardtii. For this, a bacterial antibiotic resistance gene (aphVIII) will be randomly integrated into the C. reinhardtii genome and its real-time functionalisation and evolutionary trajectories will be tracked. Using experimental evolution, I will identify genomic features that have a major impact on the control and stability of new genes. Additionally, I will analyze how HGT contributes to adaptation and impacts evolutionary flexibility in different scenarios. Finally, I will survey green algal diversity to understand how HGT contributed to the evolution of chlorophytes. Hence, this interdisciplinary project, combining molecular biology, experimental evolution, and computational methods, will offer unprecedented insights into the mechanisms of HGT in eukaryotes and answer fundamental questions in evolutionary biology, many of which have important implications for genome engineering and biotechnology.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

GREGOR MENDEL INSTITUT FUR MOLEKULARE PFLANZENBIOLOGIE GMBH
Net EU contribution
€ 230 184,72
Address
DR BOHR GASSE 3
1030 Wien
Austria
Region
Ostösterreich Wien Wien
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
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Total cost
No data