Ectopic callose deposition into woody biomass modulates the nano-architecture of macrofibrils - Archive ouverte HAL
Article Dans Une Revue Nature Plants Année : 2023

Ectopic callose deposition into woody biomass modulates the nano-architecture of macrofibrils

Jan J Lyczakowski
Rosalie Cresswell
  • Fonction : Auteur
Sam Amsbury
Marie-Joo Le Guen
Nadège Follain
Chang Su
Aleksandra Liszka
Oliver M Terrett
  • Fonction : Auteur
Shri Ram Yadav
  • Fonction : Auteur
Kaisa Nieminen
Gugan Eswaran
Karin H Müller
Dinu Iuga
Sofia Otero
Ari Pekka Mähönen
Rishikesh Bhalerao
Shawn D Mansfield
Stefan Hill
Yoselin Benitez-Alfonso
Paul Dupree
Ykä Helariutta

Résumé

Plant biomass plays an increasingly important role in the circular bioeconomy, replacing non-renewable fossil resources. Genetic engineering of this lignocellulosic biomass could benefit biorefinery transformation chains by lowering economic and technological barriers to industrial processing. However, previous efforts have mostly targeted the major constituents of woody biomass: cellulose, hemicellulose and lignin. Here we report the engineering of wood structure through the introduction of callose, a polysaccharide novel to most secondary cell walls. Our multiscale analysis of genetically engineered poplar trees shows that callose deposition modulates cell wall porosity, water and lignin contents and increases the lignin–cellulose distance, ultimately resulting in substantially decreased biomass recalcitrance. We provide a model of the wood cell wall nano-architecture engineered to accommodate the hydrated callose inclusions. Ectopic polymer introduction into biomass manifests in new physico-chemical properties and offers new avenues when considering lignocellulose engineering.
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Dates et versions

hal-04663861 , version 1 (29-07-2024)

Identifiants

Citer

Matthieu Bourdon, Jan J Lyczakowski, Rosalie Cresswell, Sam Amsbury, Francisco Vilaplana, et al.. Ectopic callose deposition into woody biomass modulates the nano-architecture of macrofibrils. Nature Plants, 2023, 9 (9), pp.1530-1546. ⟨10.1038/s41477-023-01459-0⟩. ⟨hal-04663861⟩
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