These algae can cool the Earth

Oceans conceal unexpected treasures, including a common marine algae that plays a crucial role in regulating the Earth's climate. A new study reveals that this algae is responsible for producing an abundant compound that helps cool our planet. This discovery could revolutionize our understanding of the marine ecosystem and its climatic impact.


Researchers from the University of East Anglia (UEA) and the Ocean University of China (OUC) have identified Pelagophyceae algae as important producers of dimethylsulfoniopropionate (DMSP). This discovery could transform our perception of the importance of these marine microorganisms.

Professor Jonathan Todd from UEA emphasized that these algae, among the most abundant on Earth, were not previously recognized for their role in DMSP production. This compound is not only a natural antistressor for marine organisms but also a major source of climate-cooling gases.

DMSP is converted into dimethyl sulfide (DMS), an active climate gas known for its seaside odor. DMS released into the atmosphere contributes to cloud formation, which reflects sunlight, thereby cooling the planet. This natural process is vital for Earth's climate regulation and the global sulfur cycle.

The study also reveals key enzymes in DMSP production. Researchers from UEA and OUC have identified new enzymes responsible for DMSP synthesis, paving the way for a better understanding of Pelagophyceae algae and their impact on global climate change.


Finally, researchers call for further studies on Pelagophyceae algae and other marine organisms to better measure environmental levels of DMSP and the diversity of enzymes involved in its production. Such research is essential for predicting and managing the impact of these microorganisms on our climate.