Using CRISPR genome editing, a team of scientists seeks to take advantage of common crops to help fight climate change
to investigate the specific microbes and carbon cycling traits in the soil surrounding CRISPR-edited crops. Banfield says she’s particularly interested in looking for microbial species that, like plants, use carbon dioxide directly to create their own food, and ones that produce—sticky, sugary substances that act like glue, enhancing the formation of carbon-trapping soil aggregates.
By placing gene-edited crops in special growth chambers and flooding them with CO2 containing a rare, heavy isotope known as carbon-13, the researchers will be able to see exactly how much carbon their plants are taking up, and where it’s winding up. “Lots of people are making claims around increasing soil carbon, but there is a lack of evidence around attribution,” Zelikova says. “Can you actually show that the solution you’ve developed is making measurable impacts on soil carbon stocks, and especially on the molecules that tend to stick around for a long time? Doing that in a rigorous way is key.
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