ArticleJournal of experimental botany2020
Formation of root silica aggregates in sorghum is an active process of the 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 14 papers.
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Who cites it
14 citing papers in PubMed, 43 citations in OpenAlex.
- Chemical Fingerprinting ofFood science & nutrition · 2026Article
- Synergy between silicon and beneficial microorganisms enhances plant abiotic stress tolerance through rhizosphere restructuring and coordinated defense.Frontiers in plant science · 2026Review
- 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
- Silicon nanoparticlesFrontiers in plant science · 2024Review
- Deposition of silica in sorghum root endodermis modifies the chemistry of associated lignin.Frontiers in plant science · 2024Article
- Silica deposition in plants: scaffolding the mineralization.Annals of botany · 2023Review
- Do Antimonite and Silicon Share the Same Root Uptake Pathway by Lsi1 inPlants (Basel, Switzerland) · 2023Article
- Silicon in action: Between iron scarcity and excess copper.Frontiers in plant science · 2023Review
- Effect of silicon application with mycorrhizal inoculation on Brassica juncea cultivated under water stress.PloS one · 2022Article
- Silicon triggers sorghum root enzyme activities and inhibits the root cell colonization by Alternaria alternata.Planta · 2021Article
- Unique lignin modifications pattern the nucleation of silica in sorghum endodermis.Journal of experimental botany · 2020Article
- Silicification of Root Tissues.Plants (Basel, Switzerland) · 2020Review
- Spectroscopic Discrimination of Sorghum Silica Phytoliths.Frontiers in plant science · 2019Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Silica deposition in plants is a common phenomenon that correlates with plant tolerance to various stresses. Deposition occurs mostly in cell walls, but its mechanism is unclear. Here we show that metabolic processes control the formation of silica aggregates in roots of sorghum (Sorghum bicolor L.), a model plant for silicification. Silica formation was followed in intact roots and root segments of seedlings. Root segments were treated to enhance or suppress cell wall biosynthesis. The composition of endodermal cell walls was analysed by Raman microspectroscopy, scanning electron microscopy and energy-dispersive X-ray analysis. Our results were compared with in vitro reactions simulating lignin and silica polymerization. Silica aggregates formed only in live endodermal cells that were metabolically active. Silicic acid was deposited in vitro as silica onto freshly polymerized coniferyl alcohol, simulating G-lignin, but not onto coniferyl alcohol or ferulic acid monomers. Our results show that root silica aggregates form under tight regulation by endodermal cells, independently of the transpiration stream. We raise the hypothesis that the location and extent of silicification are primed by the chemistry and structure of polymerizing lignin as it cross-links to the wall.
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