Fig. 1

Wild type F. virguliforme and F. brasiliense strains are sensitive to hygromycin (100 µg/mL) and nourseothricin (100 µg/mL). Transgenic strains of F. virguliforme with the addition of the hph gene are resistant to hygromycin, while transgenic strains of F. brasiliense with the addition of the nat gene are resistant to nourseothricin