ArticleJournal of experimental botany2020
Unique lignin modifications pattern the nucleation of silica in sorghum endodermis.
Article in Journal of experimental botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 39 citations in OpenAlex.
- Nano-silica optimizes C: N: P: K stoichiometry and nutrient accumulation in Dendrocalamus brandisii seedlings.BMC plant biology · 2026Article
- Cell walls dominate the cellular allocation of silicon in sedges.Journal of experimental botany · 2026Article
- Biosilicification in monocots: Comparative analysis highlights contrasting patterns of deposition.American journal of botany · 2025Article
- Anatomical and Trait Analyses Reveal a Silicon-Carbon Trade-Off in the Epidermis of Sedges.Plant, cell & environment · 2025Article
- Silica Biomineralization with Lignin Involves Si-O-C Bonds That Stabilize Radicals.Biomacromolecules · 2024Article
- The Physiological and Molecular Mechanisms of Silicon Action in Salt Stress Amelioration.Plants (Basel, Switzerland) · 2024Review
- Deposition of silica in sorghum root endodermis modifies the chemistry of associated lignin.Frontiers in plant science · 2024Article
- Analogy of silicon and boron in plant nutrition.Frontiers in plant science · 2024Review
- Silica deposition in plants: scaffolding the mineralization.Annals of botany · 2023Review
- Comprehensive Study of Si-Based Compounds in Selected Plants (Molecules (Basel, Switzerland) · 2023Review
- Article
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2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Silicon dioxide in the form of hydrated silica is a component of plant tissues that can constitute several percent by dry weight in certain taxa. Nonetheless, the mechanism of plant silica formation is mostly unknown. Silicon (Si) is taken up from the soil by roots in the form of monosilicic acid molecules. The silicic acid is carried in the xylem and subsequently polymerizes in target sites to silica. In roots of sorghum (Sorghum bicolor), silica aggregates form in an orderly pattern along the inner tangential cell walls of endodermis cells. Using Raman microspectroscopy, autofluorescence, and scanning electron microscopy, we investigated the structure and composition of developing aggregates in roots of sorghum seedlings. Putative silica aggregation loci were identified in roots grown under Si starvation. These micrometer-scale spots were constructed of tightly packed modified lignin, and nucleated trace concentrations of silicic acid. Substantial variation in cell wall autofluorescence between Si+ and Si- roots demonstrated the impact of Si on cell wall chemistry. We propose that in Si- roots, the modified lignin cross-linked into the cell wall and lost its ability to nucleate silica. In Si+ roots, silica polymerized on the modified lignin and altered its structure. Our work demonstrates a high degree of control over lignin and silica deposition in cell walls.
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