Lignin is one among the foremost important secondary metabolite which is produced by the phenylalanine/tyrosine metabolic pathway in plant cells.Lignin biosynthesis may be a very complex network that's divided into three processes: (i) biosynthesis of lignin monomers, (ii) transport and (iii) polymerization The lignin biosynthetic pathway has been studied for quite a century but has undergone major revisions over the past decade. Significant progress has been made in cloning new genes by genetic and combined
bioinformatics and
biochemistry approaches. In vitro enzymatic assays and detailed analyses of mutants and
transgenic plants altered within the expression of
lignin biosynthesis genes have provided a solid basis for redrawing the monolignol biosynthetic pathway, and structural analyses have shown that plant cell walls can tolerate large variations in lignin content and structure. In some cases, the potential value for
agriculture of
transgenic plants with modified lignin structure has been demonstrated. This review presents a current picture of monolignol biosynthesis, polymerization, and lignin structure.The lignin biosynthetic pathway has been studied for quite a century but has undergone major revisions over the past decade. Significant progress has been made in cloning new genes by genetic and combined
bioinformatics and
biochemistry approaches. In vitro enzymatic assays and detailed analyses of mutants and
transgenic plants altered within the expression of
lignin biosynthesis genes have provided a solid basis for redrawing the monolignol biosynthetic pathway, and structural analyses have shown that plant cell walls can tolerate large variations in lignin content and structure. In some cases, the potential value for
agriculture of
transgenic plants with modified lignin structure has been demonstrated. This review presents a current picture of monolignol biosynthesis, polymerization, and lignin structure.
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