ArticleNature plants2024
A sucrose ferulate cycle linchpin for ferulyolation of arabinoxylans in plant commelinids.
Article in Nature plants, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Completing the acylation landscape in plants: GDSL enzymes join the BAHD and SCPL acyltransferase families.Journal of experimental botany · 2026Review
- Direct valorization of agricultural byproducts to vanillin by a synergistic Komagataella phaffii co-culture system.Biotechnology for biofuels and bioproducts · 2026Article
- Identification of universal grass genes and estimates of their monocot-/commelinid-/grass-specificity.Bioinformatics advances · 2025Article
- Cycling ferulate in monocot cell walls.Nature plants · 2024Article
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11 authors.
Funding
Abstract
A transformation in plant cell wall evolution marked the emergence of grasses, grains and related species that now cover much of the globe. Their tough, less digestible cell walls arose from a new pattern of cross-linking between arabinoxylan polymers with distinctive ferulic acid residues. Despite extensive study, the biochemical mechanism of ferulic acid incorporation into cell walls remains unknown. Here we show that ferulic acid is transferred to arabinoxylans via an unexpected sucrose derivative, 3,6-O-diferuloyl sucrose (2-feruloyl-O-α-D-glucopyranosyl-(1'→2)-3,6-O-feruloyl-β-D-fructofuranoside), formed by a sucrose ferulate cycle. Sucrose gains ferulate units through sequential transfers from feruloyl-CoA, initially at the O-3 position of sucrose catalysed by a family of BAHD-type sucrose ferulic acid transferases (SFT1 to SFT4 in maize), then at the O-6 position by a feruloyl sucrose feruloyl transferase (FSFT), which creates 3,6-O-diferuloyl sucrose. An FSFT-deficient mutant of maize, disorganized wall 1 (dow1), sharply decreases cell wall arabinoxylan ferulic acid content, causes accumulation of 3-O-feruloyl sucrose (α-D-glucopyranosyl-(1'→2)-3-O-feruloyl-β-D-fructofuranoside) and leads to the abortion of embryos with defective cell walls. In vivo, isotope-labelled ferulic acid residues are transferred from 3,6-O-diferuloyl sucrose onto cell wall arabinoxylans. This previously unrecognized sucrose ferulate cycle resolves a long-standing mystery surrounding the evolution of the distinctive cell wall characteristics of cereal grains, biofuel crops and related commelinid species; identifies an unexpected role for sucrose as a ferulate group carrier in cell wall biosynthesis; and reveals a new paradigm for modifying cell wall polymers through ferulic acid incorporation.
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