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. 2020 Mar 23;20:125. doi: 10.1186/s12870-020-2329-2

Fig. 4.

Fig. 4

Analyses of lignin contents and the expression level of genes related to lignin biosynthesis. a-b Comparison of lignin contents in Gh4CL7-OE Arabidopsis plants (a) and in Gh4CL7-silencing cotton plants (b). c Stem sections from the TRV:Gh4CL7 and TRV:00 cotton plants stained with phloroglucinol-HCl. d The relative expression levels of genes related to lignin biosynthesis. Data were represented as the mean ± SE of three biological replicates; asterisks indicate levels of significance based on t-test (* P < 0.05, ** P < 0.01)