Nightshade plants bleed sugar as a call to ants for backup
![nightshade leaf with goo and ant](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/04/ticker_ht_nightshadeants_free.jpg?fit=860%2C460&ssl=1)
Tests suggest that nightshade goo contains lots of sugar and some amino acids that may help attract protective ants like Lasius niger (shown). Researchers suspect that a common hormone called jasmonic acid induces its production.
Tobias Lortzing