Characterization of anatomy, ultrastructure and lignin microdistribution in Forsythia suspensa

▶ The fiber wall is divided into ML, P and S1, S2 and S3. ▶ Higher fluorescence intensity of CCML than that of the CML and S2. ▶ The lignin concentration ratio in CCML, CML and S2 is 1.3:1.1:1. ▶ Higher level of lignification in fiber cell walls than that of vessel.