Advanced search
4 files | 3.70 MB Add to list

Significant influence of lignin on axialelastic modulus of poplar wood at low microfibril angle under wet conditions

(2019) JOURNAL OF EXPERIMENTAL BOTANY. 70(15). p.4039-4047
Author
Organization
Abstract
Wood is extensively used as construction material. Despite accumulating knowledge on its mechanical properties, the contribution of the cell wall matrix polymers to wood mechanics is still not well understood. Previous studies have shown that axial stiffness correlates with lignin content only for cellulose microfibril angles larger than around 20°, while no influence was found for smaller angles. Here, by analyzing the wood of poplar plants with reduced lignin content due to down-regulation of CAFFEOYL SHIKIMATE ESTERASE, we showed that lignin content influences axial stiffness also at smaller angles. Micro-tensile tests of the xylem revealed that axial stiffness was strongly reduced in the low-lignin transgenic lines. Strikingly, microfibril angles were around 15° for both wild type and transgenic poplars, suggesting that cellulose orientation is not responsible for the observed changes in mechanical behavior. Multiple linear regression analysis showed that the decrease in stiffness was almost completely related to the variation in both density and lignin content. We suggest that the influence of lignin content on axial stiffness may gradually increase as a function of the microfibril angle. The obtained results may help setting up comprehensive models of the cell wall for unraveling the individual role of the cell wall matrix polymers.
Keywords
cell wall mechanics, lignin, CAFFEOYL SHIKIMATE ESTERASE (CSE), lignin engineering, micromechanics, Populus tremula × Populus alba

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 810.55 KB
  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 115.95 KB
  • erz180.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 1.58 MB
  • Ozparpucu et al. 2019 Journal of Experimental Botany 70 4039.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 1.19 MB

Citation

Please use this url to cite or link to this publication:

MLA
Özparpucu, Merve et al. “Significant Influence of Lignin on Axialelastic Modulus of Poplar Wood at Low Microfibril Angle Under Wet Conditions.” JOURNAL OF EXPERIMENTAL BOTANY 70.15 (2019): 4039–4047. Print.
APA
Özparpucu, M., Gierlinger, N., Cesarino, I., Burgert, I., Boerjan, W., & Rüggeberg, M. (2019). Significant influence of lignin on axialelastic modulus of poplar wood at low microfibril angle under wet conditions. JOURNAL OF EXPERIMENTAL BOTANY, 70(15), 4039–4047.
Chicago author-date
Özparpucu, Merve, Notburga Gierlinger, Igor Cesarino, Ingo Burgert, Wout Boerjan, and Markus Rüggeberg. 2019. “Significant Influence of Lignin on Axialelastic Modulus of Poplar Wood at Low Microfibril Angle Under Wet Conditions.” Journal of Experimental Botany 70 (15): 4039–4047.
Chicago author-date (all authors)
Özparpucu, Merve, Notburga Gierlinger, Igor Cesarino, Ingo Burgert, Wout Boerjan, and Markus Rüggeberg. 2019. “Significant Influence of Lignin on Axialelastic Modulus of Poplar Wood at Low Microfibril Angle Under Wet Conditions.” Journal of Experimental Botany 70 (15): 4039–4047.
Vancouver
1.
Özparpucu M, Gierlinger N, Cesarino I, Burgert I, Boerjan W, Rüggeberg M. Significant influence of lignin on axialelastic modulus of poplar wood at low microfibril angle under wet conditions. JOURNAL OF EXPERIMENTAL BOTANY. 2019;70(15):4039–47.
IEEE
[1]
M. Özparpucu, N. Gierlinger, I. Cesarino, I. Burgert, W. Boerjan, and M. Rüggeberg, “Significant influence of lignin on axialelastic modulus of poplar wood at low microfibril angle under wet conditions,” JOURNAL OF EXPERIMENTAL BOTANY, vol. 70, no. 15, pp. 4039–4047, 2019.
@article{8613572,
  abstract     = {Wood is extensively used as construction material. Despite accumulating knowledge on its mechanical properties, the contribution of the cell wall matrix polymers to wood mechanics is still not well understood. Previous studies have shown that axial stiffness correlates with lignin content only for cellulose microfibril angles larger than around 20°, while no influence was found for smaller angles. Here, by analyzing the wood of poplar plants with reduced lignin content due to down-regulation of CAFFEOYL SHIKIMATE ESTERASE, we showed that lignin content influences axial stiffness also at smaller angles. Micro-tensile tests of the xylem revealed that axial stiffness was strongly reduced in the low-lignin transgenic lines. Strikingly, microfibril angles were around 15° for both wild type and transgenic poplars, suggesting that cellulose orientation is not responsible for the observed changes in mechanical behavior. Multiple linear regression analysis showed that the decrease in stiffness was almost completely related to the variation in both density and lignin content. We suggest that the influence of lignin content on axial stiffness may gradually increase as a function of the microfibril angle. The obtained results may help setting up comprehensive models of the cell wall for unraveling the individual role of the cell wall matrix polymers.},
  author       = {Özparpucu, Merve and Gierlinger, Notburga and Cesarino, Igor and Burgert, Ingo and Boerjan, Wout and Rüggeberg, Markus},
  issn         = {0022-0957},
  journal      = {JOURNAL OF EXPERIMENTAL BOTANY},
  keywords     = {cell wall mechanics,lignin,CAFFEOYL SHIKIMATE ESTERASE (CSE),lignin engineering,micromechanics,Populus tremula × Populus alba},
  language     = {eng},
  number       = {15},
  pages        = {4039--4047},
  title        = {Significant influence of lignin on axialelastic modulus of poplar wood at low microfibril angle under wet conditions},
  url          = {http://dx.doi.org/10.1093/jxb/erz180},
  volume       = {70},
  year         = {2019},
}

Altmetric
View in Altmetric