Engineered duckweed could be a prolific “green” oil producer.
Scientists have figured out how to coax copious amounts of oil from duckweed, one of nature’s fastest-growing aquatic plants. Converting such plant oil into biodiesel for transportation and heating could be a big part of a more sustainable future.
Unlike fossil fuels, which form underground over hundreds of millions of years, biofuels can be replenished faster than they are used. Fuels made from new and used vegetable oils, animal fat and algae can have a lower carbon footprint than fossil fuels do, depending on how they are sourced—but there has been a recent backlash against them.
Third, Shanklin and his team found a way to sidestep a major biotechnological hurdle: According to Rebecca Roston, a biochemist at the University of Nebraska–Lincoln, who was not involved in the study, engineered green plants typically expend a lot of energy on oil production and thus stop growing.
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