Species-preferential proteins attract pollen tubes to female gametes in flowering plants. In a new study, Arabidopsis was taught to say “come hither” to maize pollen when it was engineered to express a maize attractant.
Johnson, M. A. A. (2012, July 1). Plant Reproduction: Teaching a New Language of Love. Current Biology. Cell Press. https://doi.org/10.1016/j.cub.2012.06.003