Downregulation of pectin biosynthesis gene GAUT4 leads to reduced ferulate and lignin-carbohydrate cross-linking in switchgrass Authors Li, Mi; Yoo, Chang Geun; Pu, Yunqiao; Biswal, Ajaya K.; Tolbert, Allison K.; Mohnen, Debra; Ragauskas, Arthur J. Journal-Book Communications Biology Year 2019