Fig. 1.

Cold suppressed INVINH1 expression, induced cell wall invertase gene expression, meanwhile increased the activity of cell wall invertase in tomato seedlings. a RT-PCR analysis the expression of cell wall invertase gene (Lin6 and Lin8) and cell wall invertase inhibitor gene (INVINH1). Expression of actin gene (actin) was used as an internal control. b Activity of cell wall invertases was progressively induced by cold treatment. Each value is mean ± SE of at least four biological replicates. Lowercase letters indicate values significantly different at P < 0.05