Support WBURWill Genetically 'Edited' Food Be Regulated? The Case Of The MushroomPlay02:21Download AudioDan CharlesApril 15, 2016 ShareBoxes of white button mushrooms. Scientists have used a popular gene editing tool called CRISPR/Cas9 to snip out a tiny piece of DNA from one particular gene in a white button mushroom. The resulting mushroom doesn't brown when cut. (Flickr)