KATHERINA PETROU
Algal physiology in a changing world
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Emperor penguin, Antarctica (2014)
Heron Island, Australia (2015)
Iceberg Alley, Antarctica (2015)
Acropora sp., Heron Island, Australia.
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Research areas...
Microalgal ecophysiology in a changing environment
T his research area involves understanding microalgal physiology, photobiology and biochemistry in response to environmental perturbations. In particular, the aim is to understand microalgal responses to CO2-induced changes at the subcellular, species and community level and link those changes with ecosystem impacts.

Current projects: Diatom silicification in a high CO2 ocean |Acidification of the Southern Ocean: Effects on marine microbes | Primary production and macromolecular composition of Southern Ocean microalgae

Phytoplankton sulphur biogeochemistry and marine microbial interactions
T his research investigates the role of dimethylsulfoniopropionate (DMSP) in the chemical landscape of the ocean. Specifically, we investigate the role of DMSP in cell physiology and lower trophic interactions, including how the phytoplankton through DMSP production influences bacterial communities and biogeochemistry.
Current projects: Social Networking in a Changing Ocean: Microbial-Scale Ecological Interactions Control Ocean-Scale Chemistry | Characterising microbial interactions that drive organic sulphur cycling in Antarctic waters | DMSP uptake by marine microalgae: its cellular role and ecological implication

Past projects: The role of DMSP in coral stress physiology

Marine microalgal symbioses (host-symbiont interactions)
U tilising single cell methods such as epifluorescence confocal microscopy, microscope fluorometry and infra-red microspectroscopy, this work examines the physiological and biochemical responses that occur at the cellular scale in corals and foraminifera.

Current projects: Profiling the Reef: towards a biomolecular fingerprint of climate change in corals |Coral bleaching from a single cell perspective | Coral host and symbiont proteome under thermal stress

Past projects: Host mediated symbiont regulation in the foraminifera Marginopora vertebralis | Coral explants: A model organism for coral studies | Biomolecular profiling of coral symbionts under bleaching stress conditions.