Response of the WT plants, Arabidopsis <i>rav</i> mutants and <i>GmRAV-ox</i> tobaccos or <i>GmRAV-i</i> soybean seedlings to full strength MS media supplemented with the indicated sugar concentration.

<p>A and B, Relative root length in response to 200-day-old Arabidopsis and tobaccos. Root length, as a percentage of the untreated control, of seedlings grown on carbon source. Error bars represent the SE. Root length, of seedlings grown without carbon sucrose was WT (15.96±1.2 mm) and Arabidopsis <i>rav</i> mutant (19.25±0.8 mm), and for tobaccos without carbon sucrose was WT (15.29±0.9 mm) and <i>GmRAV-ox</i> (18.4±1.2 mm). Root length of 20–30 seedlings was measured for each treatment. C and D, Relative hypocotyl and root length in response to 200 mM carbon source in 8-day-old soybeans. Hypocotyl and root length, as a percentage of the untreated control, of seedlings grown on carbon source. Error bars represent the SE. Hypocotyl length without carbon source was WT (50.67±1.2 mm) and <i>GmRAV-i</i> (54.83±0.9 mm), and main root length was WT (67±1.2 mm) and <i>GmRAV-i</i> (79.83±0.7 mm). E, Relative number of lateral roots in response to 200 mM carbon source. Number of lateral roots, as a percentage of the untreated control, of seedlings grown on carbon source. Error bars represent the SE. The number of lateral roots, of seedlings grown without carbon source was WT (16.33±0.5) and <i>GmRAV-i</i> (21±1.0). Number of lateral roots of 20–30 seedlings was scored for each treatment. *differences in comparison to the non-transgenic lines at 0.01