Distribution of lignin and lignin precursors in differentiating xylem of Japanese cypress and poplar

Tsuyama, Taku; Takabe, Keiji

doi:10.1007/s10086-014-1417-z

Cited by 28 publications

(17 citation statements)

References 25 publications

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“…A knowledge of the distribution of lignin and lignin precursors may provide insights into the lignification mechanism, including the transport step. Several studies have elucidated the distribution of lignin and coniferin, the glucoside of coniferyl alcohol, in differentiating xylem of gymnosperm [15][16][17]. Lignification and the occurrence of lignin precursors have been examined in the angiosperms Magnolia kobus [18] and poplar [16].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have elucidated the distribution of lignin and coniferin, the glucoside of coniferyl alcohol, in differentiating xylem of gymnosperm [15][16][17]. Lignification and the occurrence of lignin precursors have been examined in the angiosperms Magnolia kobus [18] and poplar [16]. The results of those studies suggested that the lignin precursors are coniferin in gymnosperms and M. kobus, and sinapyl alcohol in poplar.…”

Section: Introductionmentioning

confidence: 99%

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Lignification in developing culms of bamboo Sinobambusa tootsik

et al. 2017

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Bamboos are among the largest woody grasses and grow very rapidly. Although lignin is a crucial factor for the utilization of bamboo biomass, the lignification mechanism of bamboo shoots is poorly understood. We studied lignification in the bamboo Sinobambusa tootsik during culm development. Elongation growth began in May and ended in late-June, when the lignin content was approximately half that in mature culms. Thioacidolysis analysis indicated that p-hydroxyphenyl units in lignin formed even at late stages of lignification. The syringyl/ guaiacyl ratio varied during culm development. Various lignin precursors were detected in developing culms by liquid chromatography-mass spectrometry. The ferulic acid content decreased from May to June, indicating that ferulic acid was utilized in early stages of cell wall formation. Monolignol glucosides were detected at early stages of lignification, whereas the contents of monolignols, coniferaldehyde, sinapaldehyde, p-coumaric acid, and ferulic acid peaked at later stages of lignification. Therefore, lignin precursors may be supplied differentially during the lignification process. In August, the rate of lignification decreased, although the contents of various lignin precursors peaked, implying that the rate-limiting step in the cessation of lignification in bamboo is transport or polymerization of lignin precursors, rather than their biosynthesis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lignification in developing culms of bamboo Sinobambusa tootsik

et al. 2017

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“…There are three important pieces of information known about coniferin transport. First, compound 1D is found in the cambial sap of many tree species [1,5]. Second, coniferin β-glucosidase is located in the cell wall of coniferous and broad-leaf trees [6,7].…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of a coniferin enantiomer

et al. 2019

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l-Coniferin (1L), which is an enantiomer of natural coniferin (d-coniferin (1D)), was prepared from l-glucose according to the conventional method for compound 1D. The reactivity of l-glucose and its derivatives was found to be almost same as that of the corresponding d-glucose and its derivatives during the preparation for compound 1L. Compound 1L showed resistance toward enzymatic hydrolysis by commercial β-glucosidase from Almond. However, unlike compound 1D, compound 1L was not transported across the membrane obtained from differentiating xylem of a hybrid poplar in the present assay. The result suggested for the first time that the d-/l-configuration of the glucose moiety of coniferin is an important factor affecting coniferin transport across the membrane.

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“…The pool size is large enough to allow its isolation in most gymnosperms and magnolia that emerged in an early stage of phylogeny (Soltis et al 1999). The pool size is small in most angiosperm trees such as cherry, oak, and poplar (Terazawa et al 1984;Tsuyama and Takabe 2014).…”

Section: Pool Size Of Mlgs As Intermediates In Lignin Biosynthesismentioning

confidence: 99%

Monolignol glucosides as intermediate compounds in lignin biosynthesis. Revisiting the cell wall lignification and new ¹³C-tracer experiments with Ginkgo biloba and Magnolia liliiflora

Terashima¹,

Matsushita

et al. 2016

Holzforschung

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Monolignol glucosides as intermediate compounds in lignin biosynthesis. Revisiting the cell wall lignification and new 13C-tracer experiments with Ginkgo biloba and Magnolia liliiflora DOI 10.1515/hf-2015-0224 Received October 17, 2015 accepted February 9, 2016; previously published online March 14, 2016 Abstract: A large amount of monolignol glucosides (MLGs: p-glucocoumaryl alcohol, coniferin, syringin) are found in lignifying soft xylem near cambium and they disappear with the progress of lignification. Recently, it became a matter of debate whether those MLGs are real intermediates in lignin biosynthesis or only a storage form of monolignols outside of the main biosynthetic pathway. The latter is partly based on a misinterpretation of 14 C-tracer experiments and partly on the simple generalization of the results of gene manipulation experiments concerning the flexible and complex lignification. In the present paper, it could be confirmed by the most reliable 13 C-tracer method that MLGs are real intermediates in the pathway from l-phenylalanine to macromolecular ligninpolysaccharides complexes in the cell walls. This pathway via MLGs is essential for transport and programmed delivery of specific monolignols in a stable form from intracellular space to specific lignifying sites within the cell wall. The pool size of MLGs is large in most gymnosperm trees and some angiosperm species that emerged in an early stage of phylogeny, while the pool size is small in most angiosperms. This difference in pool size is reasonably understandable from the viewpoint of plant evolution, in the course of which the role of MLGs changed to meet variation in type of major cells, reaction wood formation, and postmortem lignification.

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Distribution of lignin and lignin precursors in differentiating xylem of Japanese cypress and poplar

Cited by 28 publications

References 25 publications

Lignification in developing culms of bamboo Sinobambusa tootsik

Lignification in developing culms of bamboo Sinobambusa tootsik

Preparation and properties of a coniferin enantiomer

Monolignol glucosides as intermediate compounds in lignin biosynthesis. Revisiting the cell wall lignification and new ¹³C-tracer experiments with Ginkgo biloba and Magnolia liliiflora

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