Fig. 4From: Defined tetra-allelic gene disruption of the 4-coumarate:coenzyme A ligase 1 (Pv4CL1) gene by CRISPR/Cas9 in switchgrass results in lignin reduction and improved sugar releaseTotal lignin content obtained by AcBr method. CWR: cell wall residue. Values represent mean ± SD of three biological replicates. *P < 0.05, **P < 0.01Back to article page