High-resolution X-ray computed tomography: A new workflow for the analysis of xylogenesis and intra-seasonal wood biomass production

Lehnebach Romain, Campioli Matteo, Gričar Jozica, Prislan Peter, Mariën Bertold, Beeckman Hans, Van den Bulcke Jan. 2021. High-resolution X-ray computed tomography: A new workflow for the analysis of xylogenesis and intra-seasonal wood biomass production. Frontiers in Plant Science, 12:698640, 15 p.

Quartile : Q1, Sujet : PLANT SCIENCES

Résumé : Understanding tree growth and carbon sequestration are of crucial interest to forecast the feedback of forests to climate change. To have a global understanding of the wood formation, it is necessary to develop new methodologies for xylogenesis measurements, valid across diverse wood structures and applicable to both angiosperms and gymnosperms. In this study, the authors present a new workflow to study xylogenesis using high-resolution X-ray computed tomography (HRXCT), which is generic and offers high potential for automatization. The HXRCT-based approach was benchmarked with the current classical approach (microtomy) on three tree species with contrasted wood anatomy (Pinus nigra, Fagus sylvatica, and Quercus robur). HRXCT proved to estimate the relevant xylogenesis parameters (timing, duration, and growth rates) across species with high accuracy. HRXCT showed to be an efficient avenue to investigate tree xylogenesis for a wide range of wood anatomies, structures, and species. HRXCT also showed its potential to provide quantification of intra-annual dynamics of biomass production through high-resolution 3D mapping of wood biomass within the forming growth ring.

Mots-clés Agrovoc : séquestration du carbone, anatomie du bois, Quercus robur, Fagus sylvatica, carbonisation du bois, croissance, bois, changement climatique, biomasse, cerne, production de biomasse, Quercus nigra, port de la plante, Pinus nigra, anatomie végétale

Mots-clés libres : High-resolution X-ray computed tomography, Microtomy, Tree growth, Xylogenesis, Secondary growth phenology

Agences de financement européennes : European Research Council

Agences de financement hors UE : Bijzonder Onderzoeksfonds UGent, Universiteit Gent, Fonds Wetenschappelijk Onderzoek

Projets sur financement : (EU) What makes leaves fall in autumn? A new process description for the timing of leaf senescence in temperate and boreal trees

Auteurs et affiliations

• Lehnebach Romain, CIRAD-ES-UMR Ecofog (FRA) ORCID: 0000-0001-6175-4437 - auteur correspondant
• Campioli Matteo, Ghent University (BEL)
• Gričar Jozica, Slovenian Forestry Institute (SVN)
• Prislan Peter, Slovenian Forestry Institute (SVN)
• Mariën Bertold, Université d'Anvers (BEL)
• Beeckman Hans, RMCA (BEL)
• Van den Bulcke Jan, Ghent University (BEL)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/614318/)

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