ArticleAnnals of botany2009
Disorganized distribution of homogalacturonan epitopes in cell walls as one possible mechanism for aluminium-induced root growth inhibition in maize.
Article in Annals of botany, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 20 citations in OpenAlex.
- Article
- The Xyloglucan Endotransglucosylase/Hydrolase GeneInternational journal of molecular sciences · 2022Article
- Aluminum-Induced Alterations to the Cell Wall and Antioxidant Enzymes Involved in the Regulation of the Aluminum Tolerance of Chinese Fir (Frontiers in plant science · 2022Article
- Analysis of Interacting Proteins of Aluminum Toxicity Response Factor ALS3 and CAD inInternational journal of molecular sciences · 2019Article
- Article
- Cell wall hemicellulose contributes significantly to aluminum adsorption and root growth in Arabidopsis.Plant physiology · 2011Article
- Genotypic differences in Al resistance and the role of cell-wall pectin in Al exclusion from the root apex in Fagopyrum tataricum.Annals of botany · 2011Article
- The role of the root apoplast in aluminium-induced inhibition of root elongation and in aluminium resistance of plants: a review.Annals of botany · 2010Review
- Spatial regulation of cell-wall structure in response to heavy metal stress: cadmium-induced alteration of the methyl-esterification pattern of homogalacturonans.Annals of botany · 2010Article
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4 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsAluminium (Al) toxicity is one of the most severe limitations to crop production in acid soils. Inhibition of root elongation is the primary symptom of Al toxicity. However, the underlying basis of the process is unclear. Considering the multiple physiological and biochemical functions of pectin in plants, possible involvement of homogalacturonan (HG), one of the pectic polysaccharide domains, was examined in connection with root growth inhibition induced by Al.
methodsAn immunolabelling technique with antibodies specific to HG epitopes (JIM5, unesterified residues flanked by methylesterifed residues; JIM7, methyl-esterified residues flanked by unesterified residues) was used to visualize the distribution of different types of HG in cell walls of root apices of two maize cultivars differing in Al resistance. KEY
resultsIn the absence of Al, the JIM5 epitope was present around the cell wall with higher fluorescence intensity at cell corners lining the intercellular spaces, and the JIM7 epitope was present throughout the cell wall. However, treatment with 50 microm Al for 3 h produced 10 % root growth inhibition in both cultivars and caused the disappearance of fluorescence in the middle lamella of both epitopes. Prolonged Al treatment (24 h) with 50 % root growth inhibition in 'B73', an Al-sensitive cultivar, resulted in faint and irregular distribution of both epitopes. In 'Nongda3138', an Al-resistant cultivar, the distribution of HG epitopes was also restricted to the lining of intercellular spaces when a 50 % inhibition to root growth was induced by Al (100 microm Al, 9 h). Altered distribution of both epitopes was also observed when of roots were exposed to 50 microm LaCl(3) for 24 h, resulting in 40 % inhibition of root growth.
conclusionsChanges in HG distribution and root growth inhibition were highly correlated, indicating that Al-induced perturbed distribution of HG epitopes is possibly involved in Al-induced inhibition of root growth in maize.
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