Growth assays of <i>S. cerevisiae</i> strains expressing <i>V. Vinifera</i> aquaporins on minimal medium containing boric acid.

<p>Yeast strain transformed with empty pUG35 plasmid was the control (pUG35). Yeast suspensions were spotted in 10-fold dilution on solid YNB plates without or with 40 mM and 60 mM boric acid. Growth was recorded after two weeks at 28°C. Photographs shown are representative of three independent experiments with consistent results.</p>