ArticlePlant biotechnology journal2025
Glucuronoyl Esterase Expressed in Aspen Xylem Affects γ-Ester Linkages Between Lignin and Glucuronoxylan Reducing Recalcitrance and Accelerating Growth.
Article in Plant biotechnology journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed.
- Trimming galactose side chains of arabinogalactan proteins alters pectin and hemicellulose deposition in secondary cell walls of Arabidopsis thaliana floral stem internodes.Plant & cell physiology · 2026Article
- Glucuronoyl Esterase of Pathogenic Phanerochaete carnosa Induces Immune Responses in Aspen Independently of Its Enzymatic Activity.Plant biotechnology journal · 2026Article
- Immunolocalization of matrix polysaccharides during wood decay by white rot fungus: evidence for specific interaction between hemicellulose and lignin in the wood fibre cell wall ofFrontiers in plant science · 2026Article
Corrections and comments
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Authors and funding
14 authors.
Funding
Abstract
Wood is the most abundant renewable natural resource composed of different polysaccharides and lignin, but its utilisation is hampered by intermolecular linkages between these components forming lignin-carbohydrate complexes (LCCs) causing recalcitrance. The links between glucuronoxylan and the γ-C of lignin (γ-ester linkages) are thought to contribute to one-third of LCCs, but direct evidence for their natural occurrence and their role in recalcitrance has been scarce so far. To address these issues, Phanerochaete carnosa glucuronoyl esterase (PcGCE), hydrolysing γ-ester linkages, was expressed in cell walls of developing wood in hybrid aspen (Populus tremula L. × tremuloides Michx.). The enzyme reduced HSQC 2D NMR signals corresponding to the γ-esters and xylan in dioxane-extracted LCCs without altering glucuronoxylan content or structure. This increased acid solubility of lignin and decreased lignin content. Reduced wood recalcitrance was shown by increased sugar yields and glucose production rates (by approx. 20%) in saccharification without pretreatment and increased xylan extractability by subcritical water (by approx. 70%). Moreover, trees expressing PcGCE exhibited greater primary and secondary growth. Transcriptomics and metabolomics analyses in developing wood suggested that growth could have been induced by a higher transcription of SMR2 and RPOTmp, which was likely triggered by the secondary cell wall integrity signalling. The results provide evidence for the natural existence of LCC γ-esters and their significant contribution to lignocellulose recalcitrance. Furthermore, they show that reducing γ-ester linkages could increase plant productivity.
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Registered trials
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