ArticlePlant physiology2001
Aluminum activates a citrate-permeable anion channel in the aluminum-sensitive zone of the maize root apex. A comparison between an aluminum- sensitive and an aluminum-resistant cultivar.
Article in Plant physiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 182 citations in OpenAlex.
- Decoding the multifunctional role of γ-aminobutyric acid in plant adaptation to drought stress.Planta · 2026Review
- Roles of Glutamate Receptor-Like Channels (GLRs) in Plant Growth and Response to Environmental Stimuli.Plants (Basel, Switzerland) · 2022Review
- Impact of the Arbuscular Mycorrhizal FungusJournal of fungi (Basel, Switzerland) · 2022Article
- Metabolic acclimation supports higher aluminium-induced secretion of citrate and malate in an aluminium-tolerant hybrid clone of Eucalyptus.BMC plant biology · 2021Article
- Mechanisms and regulation of aluminum-induced secretion of organic acid anions from plant roots.Journal of Zhejiang University. Science. B · 2019Review
- Article
- The ALMT Family of Organic Acid Transporters in Plants and Their Involvement in Detoxification and Nutrient Security.Frontiers in plant science · 2016Review
- The role of arbuscular mycorrhizas in decreasing aluminium phytotoxicity in acidic soils: a review.Mycorrhiza · 2013Review
- Roles of organic acid anion secretion in aluminium tolerance of higher plants.BioMed research international · 2013Review
- Molecular and physiological strategies to increase aluminum resistance in plants.Molecular biology reports · 2012Review
- Molecular Evolution of Slow and Quick Anion Channels (SLACs and QUACs/ALMTs).Frontiers in plant science · 2012Article
- Transient proliferation of proanthocyanidin-accumulating cells on the epidermal apex contributes to highly aluminum-resistant root elongation in camphor tree.Plant physiology · 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
- Aluminium-induced ion transport in Arabidopsis: the relationship between Al tolerance and root ion flux.Journal of experimental botany · 2010Article
- Quantitative trait loci for root morphology traits under aluminum stress in common bean (Phaseolus vulgaris L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2009Article
- Plant ion channels: gene families, physiology, and functional genomics analyses.Annual review of physiology · 2009Review
- Novel properties of the wheat aluminum tolerance organic acid transporter (TaALMT1) revealed by electrophysiological characterization in Xenopus Oocytes: functional and structural implications.Plant physiology · 2008Article
- The Membrane Topology of ALMT1, an Aluminum-Activated Malate Transport Protein in Wheat (Triticum aestivum).Plant signaling & behavior · 2007Article
- Domain-specific mechanosensory transmission of osmotic and enzymatic cell wall disturbances to the actin cytoskeleton.Protoplasma · 2007Article
- The BnALMT1 and BnALMT2 genes from rape encode aluminum-activated malate transporters that enhance the aluminum resistance of plant cells.Plant physiology · 2006Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In search for the cellular and molecular basis for differences in aluminum (Al) resistance between maize (Zea mays) cultivars we applied the patch-clamp technique to protoplasts isolated from the apical root cortex of two maize cultivars differing in Al resistance. Measurements were performed on protoplasts from two apical root zones: The 1- to 2-mm zone (DTZ), described as most Al-sensitive, and the main elongation zone (3-5 mm), the site of Al-induced inhibition of cell elongation. Al stimulated citrate and malate efflux from intact root apices, revealing cultivar differences. In the elongation zone, anion channels were not observed in the absence and presence of Al. Preincubation of intact roots with 90 microM Al for 1 h induced a citrate- and malate-permeable, large conductance anion channel in 80% of the DTZ protoplasts from the resistant cultivar, but only 30% from the sensitive cultivar. When Al was applied to the protoplasts in the whole-cell configuration, anion currents were elicited within 10 min in the resistant cultivar only. La3+ was not able to replace or counteract with Al3+ in the activation of this channel. In the presence of the anion-channel blockers, niflumic acid and 4, 4'-dinitrostilbene-2, 2'disulfonic acid, anion currents as well as exudation rates were strongly inhibited. Application of cycloheximide did not affect the Al response, suggesting that the channel is activated through post-translational modifications. We propose that the Al-activated large anion channel described here contributes to enhanced genotypical Al resistance by facilitating the exudation of organic acid anions from the DTZ of the maize root apex.
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