Trees (and other plants) are built for gas exchange, in their leaves, so it would be useful to see if any plants themselves are methanotrophic. If so, perhaps

Trees (and other plants) are built for gas exchange, in their leaves, so it would be useful to see if any plants themselves are methanotrophic. If so, perhaps this capacity could be transferred to other plants, including crop plants. As far as I can tell from the Nature paper this article references, they didn't actually determine that methanotrophs are responsible, or at least entirely responsible, for the observed methane uptake.