Aqueous Macromolecules with Silicon from Alcoholinsoluble Residues of Rice Seedlings

Ishii, Tadashi; Matsunaga, Toshiro

doi:10.6090/jarq.42.181

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…The possible interaction of polymerized Si with cell wall components other than MLG has been previously investigated, and putative Si-binding components have been extracted from the cell wall. Although these studies suggest the co-existence of phenol-carbohydrate or lignin-carbohydrate complexes with high molecular weight Si complexes in rice shoot cell walls, the cell wall component that binds to the Si complex has not been chemically identified (Inanaga andOkasaka 1995, Ishii andMatsunaga 2009).…”

Section: Interaction Of Si With Other Cell Wall Componentsmentioning

confidence: 99%

“…Finally, Si is deposited into the cell walls of the epidermis as a polymer of amorphous Si, forming Si-cuticle double layers and Si-cellulose double layers beneath the cuticle. Although a possible interaction between Si and cell wall components has long been postulated, the molecular basis of this final process has not been elucidated (Inanaga andOkasaka 1995, Ishii andMatsunaga 2009).…”

Section: Introductionmentioning

confidence: 99%

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The Matrix Polysaccharide (1;3,1;4)-β-D-Glucan is Involved in Silicon-Dependent Strengthening of Rice Cell Wall

Kido¹,

Yokoyama²,

Yamamoto³

et al. 2015

Plant Cell Physiol

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Poales [represented by rice (Oryza sativa L.)] in angiosperms and Equisetum (horsetails) in Pteridophytes are two major groups of heavy silicon (Si) accumulators. In rice, Si is polymerized preferentially in the epidermal cell wall, forming Sicuticle double layers and Si-cellulose double layers beneath the cuticle. This Si layer is thought to exert various beneficial effects on the growth and development of land plants. Although the recent discovery of the influx and efflux transporters of silicic acid has shed some light on the molecular mechanisms of Si uptake and transport in rice, the mechanism underlying the final incorporation of polymerized Si into the cell wall remains elusive. Despite their phylogenetic distance, the cell walls of the two Si accumulators, Poales and Equisetum, share another common component, i.e. (1;3,1;4)b-D-glucan, also known as mixed-linkage glucan (MLG), a matrix polysaccharide not found in other plants. Based on this coincidence, a possible correlation between the functions of Si and MLG in the cell wall has been suggested, but no experimental evidence has been obtained in support of this functional correlation. Here, we present an analysis of the correlative action of Si and MLG on the mechanical properties of leaf blades using a transgenic rice line in which the MLG level was reduced by overexpressing EGL1, which encodes (1;3,1;4)-b-D-glucanase. The reduction in MLG did not affect total Si accumulation, but it significantly altered the Si distribution profile and reduced the Si-dependent mechanical properties of the leaf blades, strongly suggesting a functional correlation between Si and MLG.

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Section: Interaction Of Si With Other Cell Wall Componentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Matrix Polysaccharide (1;3,1;4)-β-D-Glucan is Involved in Silicon-Dependent Strengthening of Rice Cell Wall

Kido¹,

Yokoyama²,

Yamamoto³

et al. 2015

Plant Cell Physiol

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show abstract

“…Subsequently, a water fraction was obtained by enzymatic degradation of the cell wall. In this water fraction, silicon was found through SEC-ICP-OES to occur as bound to high molecular weight compounds (probably polysaccharides) [197]. Moreover, a relevant role of peptides and proteins in the accumulation, transport, and metabolism of silicon compounds is revealed in the literature.…”

Section: Organic Silicon Compounds In Plantsmentioning

confidence: 95%

“…In general, biomacromolecules are involved in the transport and polymerization process of silicon in the cell wall [195,196]. Ishii and Matsunaga [197] isolated an alcohol-insoluble fraction from rice seedlings. Subsequently, a water fraction was obtained by enzymatic degradation of the cell wall.…”

Section: Organic Silicon Compounds In Plantsmentioning

confidence: 99%

Comprehensive Study of Si-Based Compounds in Selected Plants (Pisum sativum L., Medicago sativa L., Triticum aestivum L.)

et al. 2023

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This review describes the role of silicon (Si) in plants. Methods of silicon determination and speciation are also reported. The mechanisms of Si uptake by plants, silicon fractions in the soil, and the participation of flora and fauna in the Si cycle in terrestrial ecosystems have been overviewed. Plants of Fabaceae (especially Pisum sativum L. and Medicago sativa L.) and Poaceae (particularly Triticum aestivum L.) families with different Si accumulation capabilities were taken into consideration to describe the role of Si in the alleviation of the negative effects of biotic and abiotic stresses. The article focuses on sample preparation, which includes extraction methods and analytical techniques. The methods of isolation and the characterization of the Si-based biologically active compounds from plants have been overviewed. The antimicrobial properties and cytotoxic effects of known bioactive compounds obtained from pea, alfalfa, and wheat were also described.

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“…В растительных тканях крем-ний входит в состав клеточных стенок, образуя комплексы с лигнином, клет-чаткой и структурными протеинами [2,3]. В организме животных и человека кремний также вносит существенный вклад в функционирование соедини-тельных тканей, придаёт прочность стенкам кровеносных сосудов и пре-пятствует проникновению липидов в плазму крови.…”

Section: кремний относится к биологически важным элементам необхо-диunclassified

Content of Silicon in Fractions of Plant Protein

Гинс¹,

Гинс²

2017

Ovoŝi Ross.

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Aqueous Macromolecules with Silicon from Alcoholinsoluble Residues of Rice Seedlings

Cited by 5 publications

References 26 publications

The Matrix Polysaccharide (1;3,1;4)-β-D-Glucan is Involved in Silicon-Dependent Strengthening of Rice Cell Wall

The Matrix Polysaccharide (1;3,1;4)-β-D-Glucan is Involved in Silicon-Dependent Strengthening of Rice Cell Wall

Comprehensive Study of Si-Based Compounds in Selected Plants (Pisum sativum L., Medicago sativa L., Triticum aestivum L.)

Content of Silicon in Fractions of Plant Protein

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