Fig. 7From: Over-expression of poplar NAC15 gene enhances wood formation in transgenic tobaccoWood property comparison of tobacco plants. The relative content of hemicellulose, cellulose and lignin was higher in the TLs than that in the CLs. TL1–5, transgenic lines; CL, control line. Mean values and standard errors were calculated from three independent biological experiments. * indicates P < 0.05, ** indicates P < 0.01Back to article page