Highlights•To date, metabolites from more than 10 different metabolic classes have been
identified as lignin building blocks, totaling 35 monomers.•Despite this flexibility, limitations …

Aromatic amino acid deaminases are key enzymes mediating carbon flux from primary to
secondary metabolism in plants. Recent studies have uncovered a tyrosine ammonia-lyase …

The domestication of forest trees for a more sustainable fiber bioeconomy has long been
hindered by the complexity and plasticity of lignin, a biopolymer in wood that is recalcitrant to …

Contents Summary 1703 I. Introduction 1703 II. Cellulose biosynthesis 1705 III. Xylan
biosynthesis 1709 IV. Glucomannan biosynthesis 1713 V. Lignin biosynthesis 1714 VI …

Plant secondary cell-wall (SCW) deposition and lignification are affected by both seasonal
factors and abiotic stress, and these responses may involve the hormone abscisic acid …

A multi-omics quantitative integrative analysis of lignin biosynthesis can advance the
strategic engineering of wood for timber, pulp, and biofuels. Lignin is polymerized from three …

Wood is an abundant and renewable feedstock for the production of pulp, fuels, and
biobased materials. However, wood is recalcitrant toward deconstruction into cellulose and …

Highlights•Lignins synthesized in response to stresses display distinct structural features
from those of developmental lignins.•Stress lignins likely possess different physical …

Lignin is a complex phenolic polymer that is deposited in the secondary cell wall of all
vascular plants. The evolution of lignin is considered to be a critical event during vascular …

Lignin, a major component of the secondary cell wall, is important for plant growth and
development. Moreover, lignin plays a pivotal role in plant innate immunity. Lignin is readily …