Tension wood and opposite wood in 21 tropical rain forest species : 1. Occurence and efficiency of the G-layer
TLDR
Wood samples were taken from the upper and lower sides of 21 naturally tilted trees from 18 families of angiosperms in the tropical rain forest in French Guyana and showed that the G-layer is not a key factor in the production of high tensile stressed wood.Abstract:
SUMMARY Wood samples were taken from the upper and lower sides of 21 naturally tilted trees from 18 families of angiosperms in the tropical rain forest in French Guyana. The measurement of growth stresses ensured that the two samples were taken from wood tissues in a different mechanical state: highly tensile stressed wood on the upper side, called tension wood, and lower tensile stressed wood on the lower side, called opposite wood. Eight species had tension wood fibres with a distinct gelatinous layer (G-layer). The distribution of gelatinous fibres varied from species to species. One of the species, Casearia javitensis (Flacourtiaceae), showed a peculiar multilayered secondary wall in its reaction wood. Comparison between the stress level and the occurrence of the G-layer indicates that the G-layer is not a key factor in the production of high tensile stressed wood.read more
Citations
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Journal ArticleDOI
Evaluation of Wood Quality Traits in Salix viminalis Useful for Biofuels: Characterization and Method Development
TL;DR: Since tension wood with G-fibers and cellulose-rich G-layers represents an increased source of readily available non-recalcitrant cellulose for biofuels, S. viminalis breeding programs should be orientated towards determining factors for its enhancement.
Journal ArticleDOI
A Review on Structures of Secondary Wall in Reaction Wood Fiber of Hardwood Species
TL;DR: The understanding of tension wood formation provides a unique opportunity to obtain information on the molecular and biochemical mechanisms in the expression patterns of genes/proteins, including secondary wall layers structure.
Journal ArticleDOI
Study of tension wood in the artificially inclined seedlings of Koelreuteria henryi Dummer and its biomechanical function of negative gravitropism
TL;DR: In this article, the tension wood formation and biomechanical behavior of a 2-year-old Koelreuteria henryi seedlings were studied to gain insights into tree uprighting process.
DissertationDOI
Passive Hydro-actuated Unfolding of Ice Plant Seed Capsules as a Concept Generator for Autonomously Deforming Devices
Journal ArticleDOI
Growth stresses in old beech poles after thinning: distribution and relation with wood anatomy
Citra Yanto Ciki Purba,Citra Yanto Ciki Purba,Citra Yanto Ciki Purba,Estelle Noyer,Estelle Noyer,Julien Ruelle,Julien Ruelle,Jana Dlouha,Jana Dlouha,Lina Karlinasari,Meriem Fournier,Meriem Fournier +11 more
TL;DR: Surprisingly, thinning treatment did not affect the average growth stress level and intensity of reaction in old beech poles and a significant positive correlation was found in agreement with previous studies on other species.
References
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Book
Growth Stresses and Strains in Trees
TL;DR: In this article, the authors present a more quantitative approach to the effect of growth stresses than might have been the case in the past, by taking a more qualitative approach to evaluate the relationship between growth stress and wood properties.
Journal ArticleDOI
Significance of allometry in tropical saplings.
Takashi Kohyama,M. Motta +1 more
TL;DR: It is hypothesize that the advantage of maintaining assimilative area in present height is diminished in a habitat with higher growth rate and/or steeper vertical light gradient such as in.
Journal ArticleDOI
Physical and Chemical Properties of the Gelatinous Layer in Tension Wood Fibres of Aspen (Populus tremula L.)
Per Henrik Norberg,Hans Meier +1 more
TL;DR: In this article, different organic solvents were passed through green cylindric samples of sapwood of Abies alba Miller and Picea abies Karst, at a pressure equal to 5 cm water column.
Journal ArticleDOI
Detection in situ and characterization of lignin in the G -layer of tension wood fibres of Populus deltoides
TL;DR: Immunochemical labelling provides the first visualization in planta of lignin structures within the G-layer of tension wood fibres, and patterns of distribution of syringyl epitopes indicate thatSyringyl lignIn is deposited more intensely in the later phase of fibre secondary wall assembly, and is under specific spatial and temporal regulation targeted differentially throughout cell wall layers.