BEEM Seminar: Marine Phototroph-Heterotroph Interactions Propelled by Cross-Feeding

Start time: 16:00 / End time: 17:00 / Date: 20 Nov 2018 / Venue: Lecture Theatre 1 Life Sciences Building

Open to: Students in host dept/school/institute/centre / Staff in host dept/school/institute/centre / Students from same Faculty as host dept/school/institute/centre / Staff from same Faculty as host dept/school/institute/centre / Students within this Faculty / Staff within this Faculty / Specific UOL Students (for details see 'Suitable For') / Specific UOL Staff (for details see 'Suitable For')

Type: Seminar

Cost: Free event

Contact: For more information contact Blanca Perez Sepulveda at blanca.perez@liverpool.ac.uk


About the event

Speaker: Joseph Christie-Oleza (University of Warwick)

Biological interactions underpin the functioning of marine ecosystems, be it via competition, predation, mutualism, or symbiosis processes. Microbial phototroph-heterotroph interactions propel the engine that results in the biogeochemical cycling of individual elements and are critical for understanding and modelling global ocean processes.

We performed long-term phototroph-heterotroph co-culture experiments using a broad range of model marine phototrophic microorganisms grown in combination with a diverse range of marine bacteria and determined the interactions that supported long-term growth. The high-throughput proteomic data generated from these co-cultures revealed mechanistic insights of the cross-feeding process that occurs in each one of these systems. For the first time, we challenge the general belief that marine phototrophs and heterotrophs compete for the same scarce nutrients and niche space, but instead suggest these organisms more likely benefit from each other because of their different levels of specialization and complementarity within long-term stable-state systems.

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