ArticleNature communications2024
Shoot-Silicon-Signal protein to regulate root silicon uptake in rice.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Spatial Regulation of Silicon Accumulation in Peduncle Confers Sheathed Spike in Barley.Plant biotechnology journal · 2026Article
- Synergy between silicon and beneficial microorganisms enhances plant abiotic stress tolerance through rhizosphere restructuring and coordinated defense.Frontiers in plant science · 2026Review
- Emerging roles of silicon in plant signaling networks and microbiome dynamics under salt stress.Frontiers in plant science · 2026Review
- Editorial: New avenues of silicon's role in plant biology: trends and controversies.Frontiers in plant science · 2025Article
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Authors and funding
8 authors.
Funding
Abstract
Plants accumulate silicon to protect them from biotic and abiotic stresses. Especially in rice (Oryza sativa), a typical Si-accumulator, tremendous Si accumulation is indispensable for healthy growth and productivity. Here, we report a shoot-expressed signaling protein, Shoot-Silicon-Signal (SSS), an exceptional homolog of the flowering hormone "florigen" differentiated in Poaceae. SSS transcript is only detected in the shoot, whereas the SSS protein is also detected in the root and phloem sap. When Si is supplied from the root, the SSS transcript rapidly decreases, and then the SSS protein disappears. In sss mutants, root Si uptake and expression of Si transporters are decreased to a basal level regardless of the Si supply. The grain yield of the mutants is decreased to 1/3 due to insufficient Si accumulation. Thus, SSS is a key phloem-mobile protein for integrating root Si uptake and shoot Si accumulation underlying the terrestrial adaptation strategy of grasses.
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