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  • Jonasson, SimonLuleå tekniska universitet,Materialvetenskap (author)

Characteristics of Cellulose Nanofibrils from Transgenic Trees with Reduced Expression of Cellulose Synthase Interacting 1

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • 2022-10-02
  • MDPI,2022
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:ltu-86760
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-86760URI
  • https://doi.org/10.3390/nano12193448DOI
  • https://res.slu.se/id/publ/119444URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Validerad;2022;Nivå 2;2022-11-01 (hanlid);This article is a revised version of a paper that has previously appeared as a manuscript in a thesis 
  • Cellulose nanofibrils can be derived from the native load-bearing cellulose microfibrils in wood. These microfibrils are synthesized by a cellulose synthase enzyme complex that resides in the plasma membrane of developing wood cells. It was previously shown that transgenic hybrid aspen trees with reduced expression of CSI1 have different wood mechanics and cellulose microfibril properties. We hypothesized that these changes in the native cellulose may affect the quality of the corresponding nanofibrils. To test this hypothesis, wood from wild-type and transgenic trees with reduced expression of CSI1 was subjected to oxidative nanofibril isolation. The transgenic wood-extracted nanofibrils exhibited a significantly lower suspension viscosity and estimated surface area than the wild-type nanofibrils. Furthermore, the nanofibril networks manufactured from the transgenics exhibited high stiffness, as well as reduced water uptake, tensile strength, strain-to-break, and degree of polymerization. Presumably, the difference in wood properties caused by the decreased expression of CSI1 resulted in nanofibrils with distinctive qualities. The observed changes in the physicochemical properties suggest that the differences were caused by changes in the apparent nanofibril aspect ratio and surface accessibility. This study demonstrates the possibility of influencing wood-derived nanofibril quality through the genetic engineering of trees.

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  • Bünder, AnneSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology,Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden (author)
  • Berglund, LinnLuleå tekniska universitet,Materialvetenskap(Swepub:ltu)iliebu (author)
  • Niittylä, TotteSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology,Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden(Swepub:slu)49276 (author)
  • Oksman, Kristiina,1959-Luleå tekniska universitet,Materialvetenskap,Mechanical & Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada; Wallenberg Wood Science Centre (WWSC), Sweden(Swepub:ltu)krioks (author)
  • Luleå tekniska universitetMaterialvetenskap (creator_code:org_t)
  • Sveriges lantbruksuniversitet

Related titles

  • In:Nanomaterials: MDPI12:192079-4991

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