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The spatial modulation of microfibril angle in the woody tissue of maturing tree stems studied with synchrotron radiation

Jarrett, K. J. ; Kirby, N. ; Buckley, C. E. and Garvey, C. J. LU orcid (2020) In Australian Journal of Botany 68(4). p.267-274
Abstract

Spatial variations in the microfibril angle (MFA) of cellulose are mapped on individual radial sections of wood from the maturing stems of Australian tree species (Acacia floribunda, Acacia suaveolens, Acacia doratoxylon, Acacia havilandiorum, Brachychiton populneus and Bertya cunninghamii) from different rainfall and soil nutrient availabilities using synchrotron wide angle X-ray scattering. For the three species with the smallest radial variation there is a clear linear relationship between the MFA with Young's modulus and wood density with data published previously for these samples. The other three samples show a large radially symmetric variation in MFA across the radial section either having a continuous change from large MFA in... (More)

Spatial variations in the microfibril angle (MFA) of cellulose are mapped on individual radial sections of wood from the maturing stems of Australian tree species (Acacia floribunda, Acacia suaveolens, Acacia doratoxylon, Acacia havilandiorum, Brachychiton populneus and Bertya cunninghamii) from different rainfall and soil nutrient availabilities using synchrotron wide angle X-ray scattering. For the three species with the smallest radial variation there is a clear linear relationship between the MFA with Young's modulus and wood density with data published previously for these samples. The other three samples show a large radially symmetric variation in MFA across the radial section either having a continuous change from large MFA in the stem's centre to small value close to the bark or the reverse, small MFA at the centre to larger values close to the bark. For these samples, a strong linear correlation between the Young's modulus and density and the MFA is not apparent. We conclude that spatially localised measurements of MFA provide an important insight in the adaptation of wood tissue to environmental conditions.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Australian Journal of Botany
volume
68
issue
4
pages
8 pages
publisher
CSIRO Publishing
external identifiers
  • scopus:85089592568
ISSN
0067-1924
DOI
10.1071/BT18229
language
English
LU publication?
yes
id
5f4c49ab-7130-4282-945d-203d78c38899
date added to LUP
2020-08-28 08:40:25
date last changed
2022-10-24 05:32:52
@article{5f4c49ab-7130-4282-945d-203d78c38899,
  abstract     = {{<p>Spatial variations in the microfibril angle (MFA) of cellulose are mapped on individual radial sections of wood from the maturing stems of Australian tree species (Acacia floribunda, Acacia suaveolens, Acacia doratoxylon, Acacia havilandiorum, Brachychiton populneus and Bertya cunninghamii) from different rainfall and soil nutrient availabilities using synchrotron wide angle X-ray scattering. For the three species with the smallest radial variation there is a clear linear relationship between the MFA with Young's modulus and wood density with data published previously for these samples. The other three samples show a large radially symmetric variation in MFA across the radial section either having a continuous change from large MFA in the stem's centre to small value close to the bark or the reverse, small MFA at the centre to larger values close to the bark. For these samples, a strong linear correlation between the Young's modulus and density and the MFA is not apparent. We conclude that spatially localised measurements of MFA provide an important insight in the adaptation of wood tissue to environmental conditions.</p>}},
  author       = {{Jarrett, K. J. and Kirby, N. and Buckley, C. E. and Garvey, C. J.}},
  issn         = {{0067-1924}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{267--274}},
  publisher    = {{CSIRO Publishing}},
  series       = {{Australian Journal of Botany}},
  title        = {{The spatial modulation of microfibril angle in the woody tissue of maturing tree stems studied with synchrotron radiation}},
  url          = {{http://dx.doi.org/10.1071/BT18229}},
  doi          = {{10.1071/BT18229}},
  volume       = {{68}},
  year         = {{2020}},
}