Plant microRNAs control honeybee caste development by preventing larval differentiation into queens and inducing formation of workers. Especially important in this respect is miRNA162a which targets genes of the TOR complex. Previously, dietary plant microRNAs were reported also in human blood but possible impacts on humans are still not clarified.
http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1006946
https://cosmosmagazine.com/biology/plant-molecules-stop-worker-bees-from-ascending-throne