Although more work is needed before engineered trees can start to help curb ClimateChange, a California biotech company has announced some encouraging results.
A California biotech company seeking to create fast-growing trees that can rapidly soak up atmospheric carbon dioxide has announced its first experimental results: the firm’s genetically enhanced poplars grew more than 1.5 times faster than unmodified ones in lab trials. Plant scientists applaud the news, but caution that much more work is needed before engineered trees can start to help curb climate change.
But how fast trees soak up carbon is limited by numerous factors. One key constraint is the rate of photosynthesis, the biochemical process trees use to convert carbon dioxide into sugars and ultimately wood. Nearly all trees use a relatively inefficient form of photosynthesis that produces a toxic byproduct called phosphoglycolate, which the plants must then remove through a process called photorespiration. That uses energy that could otherwise go toward growth.
Living Carbon, founded in 2019, is growing the engineered poplars inside a converted music recording studio in San Francisco. Some of the trees have grown so tall they bumped into the ceiling. “As someone who spends my time on Zoom, it’s very nice” to be in the greenhouse, quips CEO Maddie Hall.
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