Researchers Unveil Algae’s Potential for Fuel and Nutrients

Researchers at Western University have made a significant advancement in biotechnology by revealing the potential of diatoms, a type of single-cell microalgae. Found in various bodies of water around the globe, including oceans and lakes, diatoms are estimated to account for 20 to 50 percent of the world’s oxygen. Their ability to convert carbon dioxide into oxygen positions them as crucial players in the ecosystem, serving as a primary food source for many marine organisms.

Associate Professor Bodumil Karas from the university’s biochemistry department emphasizes the transformative potential of diatoms. “We are really hoping that very soon we’re going to be using those diatoms as factories for producing many products from fuel to protein, to vitamins, et cetera,” he stated. The challenge lies in the diatoms’ protective silica shell, which, while making them resilient, complicates the process of modifying their genetic code to manufacture new products.

Breakthrough in Genetic Modification

The breakthrough emerged when Emma Walker, then a PhD candidate, recognized that older diatoms had a more easily removable shell. She developed a chemical process to replicate this phenomenon, significantly enhancing the team’s ability to explore a wider range of DNA coding options. “In the past maybe, we could test 10 combinations, 20. But right now, with this method, we can test thousands in a fraction of the time,” Walker explained. This advancement could drastically reduce production costs, making algae-based products more competitive compared to traditional manufacturing methods.

Diatoms also present a sustainable alternative to fossil fuels, which are finite resources. Karas points out that as oil reserves dwindle, the need for renewable sources of energy becomes increasingly pressing. He highlights that diatoms require only sunlight and seawater to thrive, while also absorbing carbon dioxide and producing oxygen. “We have so many more benefits,” he added, noting the positive environmental impact of utilizing these organisms.

Building Global Collaborations

The groundbreaking research has garnered international attention, leading to collaborations with scientists from various countries. Karas mentioned the formation of a consortium that includes nearly 60 scientists, who meet twice a year to discuss the application of their discoveries. “Many collaborators are coming to work with us,” he said, underscoring the growing interest in the innovative approaches being developed at Western University.

The findings of this research have been published in the journal Nature Communications, marking a significant step forward in the quest to harness the capabilities of diatoms. With the potential to generate a wide range of products, this research not only paves the way for a more sustainable future but also highlights the critical role of academic institutions in addressing global challenges.