Fig. 8From: Transgene silencing of sucrose synthase in alfalfa (Medicago sativa L.) stem vascular tissue suggests a role for invertase in cell wall cellulose synthesisAcid invertase activity in elongating stem (ES) and post-elongation stem (PES) internodes. a Vacuolar and (b) cell wall activity of M22 (control) and the MsSUS1 down-regulated lines (M17, M18). Values are means ± standard error (n = 3). ** indicates a significant difference (P < 0.01) as determined by analysis of variance compared to the control M22Back to article page