A horizontal offshoot of the thale cress plant is a body part all its own: the cantil
, a plant biologist at Pennsylvania State University. Then a postdoctoral researcher, Gookin was studying the genetics of how leaves age, using mutants ofDuring these experiments, he noticed something peculiar: On some of his plants, horizontal arms jutted several millimeters off from the stems. Gookin filed the observation away, chalking it up to a fluke caused by mutations in the lab plants.
Again and again, the structures appeared. Only then did he accept that the cantils were no fluke, but a part ofFor years, Gookin worked on nights and weekends to figure out what made cantils tick, genetically speaking. He doesn’t have the whole picture yet, but so far, he’s made three key discoveries. For one, a gene called FLOWERING LOCUS T, which plays a vital role in plants’ flower formation, triggers cantils to form.
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