PhD Studentship: The biology and ecology of disease in seagrass: Understanding the pseudo-fungus Phytophthora gemini and its impact on common eelgrass (Zostera marina) development.

DoS: Professor Michael Cunliffe (micnli@mba.ac.uk), Marine Biological Association (MBA)

2^nd Supervisor: Dr George Littlejohn

3^rd Supervisor: Mr Andy Cameron, Ocean Conservation Trust

Applications are invited for a 3.5 years PhD studentship.

The studentship will start on 01 October 2026

Project Description

Scientific Background

Seagrass meadows, such as those formed by Zostera marina (common eelgrass), are vital marine ecosystems that support biodiversity, stabilise sediments and sequester carbon. However, these meadows are increasingly threatened by climate change, pollution and disease. Emerging evidence highlights the role of microbial pathogens, especially the pseudofungus Phytophthora gemini (a fungus-like oomycete), in undermining restoration efforts by infecting eelgrass seeds and seedlings. This project addresses a critical knowledge gap in the biology and ecology of seagrass pathogens and their impact on restoration success, offering timely insights into disease mitigation strategies.

Research Methodology

The PhD researcher will investigate the infection biology of Phytophthora gemini and its interaction with Zostera marina through a combination of laboratory assays, microscopy, and molecular techniques (e.g. qPCR, metabarcoding) to characterise pathogen life cycles, host responses and environmental tolerances. Fieldwork will be conducted at selected coastal sites to assess natural infection dynamics and collect samples for analysis. Restoration trials will be designed to test seed treatments and planting strategies under controlled and semi-natural conditions. The project will be based at the Marine Biological Association (MBA) in Plymouth, with additional work at the University of Plymouth and the Ocean Conservation Trust. There will be opportunities for collaboration across UK and international research networks.

Training

The researcher will gain interdisciplinary training in microbiology, marine ecology, plant pathology, molecular biology and restoration science, with a strong emphasis on applied ecological research. They will develop skills in experimental design, statistical analysis and scientific communication. Opportunities include attending international conferences, publishing in peer-reviewed journals and engaging with stakeholders involved in seagrass restoration. The MBA offers a vibrant research environment with access to cutting-edge facilities and mentoring from experienced scientists.

Person Specification

We seek an enthusiastic individual with a strong interest in marine biology, plant–microbe interactions and ecological restoration. A background in biology, environmental science or a related discipline is desirable. Prior experience in microbiology, molecular techniques, microscopy or fieldwork is advantageous but not essential. The ideal candidate will be curious, collaborative and motivated to contribute to ecological research with real-world impact.

Eligibility

Applicants should have a first or upper second class honours degree or a relevant Masters qualification. Desired degree subjects include biology, marine biology, microbiology, environmental science and marine science.

If your first language is not English, you will need to meet the minimum English requirements for the programme, IELTS Academic score of 6.5 (with no less than 5.5 in each component test area) or equivalent.

Successful candidates who meet UKRI’s eligibility criteria will be awarded a fully-funded ARIES studentship of fees, maintenance stipend, £20,780 p.a. for 2025/26 (2026/27 rate TBC) and research costs.

If you wish to discuss this project further informally, please contact:

Professor Michael Cunliffe, micnli@mba.ac.uk

Please see here for a list of supporting documents to upload with your application.

Please click on the Apply button above for further information and to apply.

The closing date for applications on 7^th January 2026.

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