Author response image 1. Time course of E. huxleyi CCMP379 mono-cultures (dashed lines) and during co-culturing with Sulfitobacter D7 (smooth lines).

Cultures we either not supplemented (a-b) or supplemented with 100 µM DMSP at day 0 (c-d). Benzoate was added to the cultures at day 0 in the following concentrations: 1 µM (blue), 10 µM (green), 100 µM (yellow) or none (grey).