Fig. 1From: Metabolome and transcriptome analyses identify the plant immunity systems that facilitate sesquiterpene and lignan biosynthesis in Syringa pinnatifolia Hemsl.Phenotypical and morphological analyses of the plant materials. AÂ Whole S. pinnatifolia. BÂ Thick stems of S. pinnatifolia with the purple substance visible (SSP). CÂ Thin twigs of S. pinnatifolia without the purple substance (TSP). DÂ Transverse (top), radial (middle), and tangential (bottom) sections of SSP. EÂ Transverse (top), radial (middle), and tangential (bottom) sections of TSP. FÂ The distribution of wood fiber cell wall thickness in SSP and TSP. The rhombi in boxplots indicate outliers, and the red dotted lines indicate the average values. (Ve, vessel; WF, wood fiber cell; XR, xylem ray)Back to article page