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Content archived on 2024-06-18

Hardwiring the ocean floor: the impact of microbial electrical circuitry on biogeochemical cycling in marine sediments

Objective

Although it is well known that microbial cells can exhibit sophisticated cooperative behaviour, none of the recent advancements in geomicrobiology has been so perplexing as the proposal that microbial populations are capable of fast, electrical communication over centimetre scale distances. This metabolic tour-de-force was recently documented from laboratory incubations with marine sediments. Clearly, the phenomenon is so thought provoking, and its consequences are so far reaching, that independent verification is absolutely needed. Recently, my research group has collected strong evidence that long-distance electron transport is not merely a laboratory phenomenon, but that it effectively happens under in situ conditions in marine sediments. These observations open a broad avenue for new research, since at present, we no understanding of the prevalence of long-distance electron transport in natural environments, let alone, its impact on biogeochemical cycling. In response, this ERC project proposes an in depth investigation into long-distance electron transport in aquatic sediments: when and where does it occur, which redox pathways and microbial players are involved, what is the effective mechanism of electron transfer, and what are its biogeochemical implications. Clearly, this idea of long-distance electron transport would add a whole new dimension to microbial ecology, radically changing our views on microbial cooperation. Yet, the consequences for carbon sequestration and mineral cycling in sediments and soils could even be more astounding, allowing an unprecedented flexibility in redox pathways. Since the same type of extracellular electron transport is at work in engineered systems like microbial fuel cells, it could also improve our understanding of such biotechnological applications.

Fields of science (EuroSciVoc)

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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.

Call for proposal

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ERC-2012-StG_20111012
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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.

ERC-SG - ERC Starting Grant

Host institution

STICHTING NEDERLANDSE WETENSCHAPPELIJK ONDERZOEK INSTITUTEN
EU contribution
€ 1 497 996,00
Total cost

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.

No data

Beneficiaries (2)

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