ArticlePlant physiology2008
Cell wall polysaccharides are specifically involved in the exclusion of aluminum from the rice root apex.
Article in Plant physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers.
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Who cites it
123 citing papers in PubMed, 408 citations in OpenAlex.
- Gibberellic acid (GA) alleviates Al toxicity in rice (Oryza sativa) through a nitric oxide (NO) dependent pathway.Planta · 2026Article
- Supramolecular Assembly of Cell Wall Anisotropic Scatterers in Triticale Root Apex Reflects Aluminum Stress Response in Contrasting Genotypes.International journal of molecular sciences · 2025Article
- Regulatory Programmes Driving Suberin Plasticity Under Aluminium Stress in Barley Roots.Plant, cell & environment · 2025Article
- Review
- Phenolic Compounds Enhance Aluminum Tolerance in Chinese Fir (Plants (Basel, Switzerland) · 2025Article
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- Uncovering differences in cadmium accumulation capacity of differentHorticulture research · 2025Article
- Aluminum resistance in plants: A critical review focusing on STOP1.Plant communications · 2025Review
- Two genes encoding a bacterial-type ABC transporter function in aluminum tolerance in soybean.Plant cell reports · 2024Article
- Towards sustainable use of acidic soils: Deciphering aluminum-resistant mechanisms in plants.Fundamental research · 2024Review
- Physiological alterations and genotoxic damage under combined aluminum and cadmium treatments in Bryophyllum daigremontianum clones.Molecular biology reports · 2024Article
- Two Half-Size ATP-Binding Cassette Transporters Are Implicated in Aluminum Tolerance in Soybean.International journal of molecular sciences · 2024Article
- Article
- The upstream regulation of the root cell wall whenPlant signaling & behavior · 2023Article
- Physiological and Transcriptomic Analysis Reveals That Melatonin Alleviates Aluminum Toxicity in Alfalfa (International journal of molecular sciences · 2023Article
- Overexpression of an ART1-Interacting GeneInternational journal of molecular sciences · 2023Article
- Integrated Characterization of Cassava (Plants (Basel, Switzerland) · 2023Article
- Review
- STOP1 and STOP1-like proteins, key transcription factors to cope with acid soil syndrome.Frontiers in plant science · 2023Review
- Effects of Elevated Aluminum Concentration and Distribution on Root Damage, Cell Wall Polysaccharides, and Nutrient Uptake in Different TolerantInternational journal of molecular sciences · 2022Article
63 more citing papers are in PubMed but not listed here.
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rice (Oryza sativa) is the most aluminum (Al)-resistant crop species among the small-grain cereals, but the mechanisms responsible for this trait are still unclear. Using two rice cultivars differing in Al resistance, rice sp. japonica 'Nipponbare' (an Al-resistant cultivar) and rice sp. indica 'Zhefu802' (an Al-sensitive cultivar), it was found that Al content in the root apex (0-10 mm) was significantly lower in Al-resistant 'Nipponbare' than in sensitive 'Zhefu802', with more of the Al localized to cell walls in 'Zhefu802', indicating that an Al exclusion mechanism is operating in 'Nipponbare'. However, neither organic acid efflux nor changes in rhizosphere pH appear to be responsible for the Al exclusion. Interestingly, cell wall polysaccharides (pectin, hemicellulose 1, and hemicellulose 2) in the root apex were found to be significantly higher in 'Zhefu802' than in 'Nipponbare' in the absence of Al, and Al exposure increased root apex hemicellulose content more significantly in 'Zhefu802'. Root tip cell wall pectin methylesterase (PME) activity was constitutively higher in 'Zhefu802' than in 'Nipponbare', although Al treatment resulted in increased PME activity in both cultivars. Immunolocalization of pectins showed a higher proportion of demethylated pectins in 'Zhefu802', indicating a higher proportion of free pectic acid residues in the cell walls of 'Zhefu802' root tips. Al adsorption and desorption kinetics of root tip cell walls also indicated that more Al was adsorbed and bound Al was retained more tightly in 'Zhefu802', which was consistent with Al content, PME activity, and pectin demethylesterification results. These responses were specific to Al compared with other metals (CdCl(2), LaCl(3), and CuCl(2)), and the ability of the cell wall to adsorb these metals was also not related to levels of cell wall pectins. All of these results suggest that cell wall polysaccharides may play an important role in excluding Al specifically from the rice root apex.
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