ArticlePlant physiology2001
Malate-permeable channels and cation channels activated by aluminum in the apical cells of wheat roots.
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 44 papers.
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Who cites it
44 citing papers in PubMed.
- Towards sustainable use of acidic soils: Deciphering aluminum-resistant mechanisms in plants.Fundamental research · 2024Review
- Multiple ALMT subunits combine to form functional anion channels: A case study for rice ALMT7.Frontiers in plant science · 2022Article
- Morpho-physiological characterization coupled with expressional accord of exclusion mechanism in wild and cultivated lentil under aluminum stress.Protoplasma · 2021Article
- Cyclic AMP: A Polyhedral Signalling Molecule in Plants.International journal of molecular sciences · 2020Review
- Function of NHX-type transporters in improving rice tolerance to aluminum stress and soil acidity.Planta · 2020Article
- Effect ofPlants (Basel, Switzerland) · 2020Article
- Article
- Polyamines-induced aluminum tolerance in mung bean: A study on antioxidant defense and methylglyoxal detoxification systems.Ecotoxicology (London, England) · 2017Article
- Anion Channel Inhibitor NPPB-Inhibited Fluoride Accumulation in Tea Plant (Camellia sinensis) Is Related to the Regulation of Ca²⁺, CaM and Depolarization of Plasma Membrane Potential.International journal of molecular sciences · 2016Article
- The ALMT Family of Organic Acid Transporters in Plants and Their Involvement in Detoxification and Nutrient Security.Frontiers in plant science · 2016Review
- Ethylene negatively regulates aluminium-induced malate efflux from wheat roots and tobacco cells transformed with TaALMT1.Journal of experimental botany · 2014Article
- Wheat genotypes differing in aluminum tolerance differ in their growth response to CO2 enrichment in acid soils.Ecology and evolution · 2013Article
- Roles of organic acid anion secretion in aluminium tolerance of higher plants.BioMed research international · 2013Review
- The rice ASR5 protein: a putative role in the response to aluminum photosynthesis disturbance.Plant signaling & behavior · 2012Article
- Differential expression of genes involved in alternative glycolytic pathways, phosphorus scavenging and recycling in response to aluminum and phosphorus interactions in Citrus roots.Molecular biology reports · 2012Article
- Molecular and physiological strategies to increase aluminum resistance in plants.Molecular biology reports · 2012Review
- Development of a novel aluminum tolerance phenotyping platform used for comparisons of cereal aluminum tolerance and investigations into rice aluminum tolerance mechanisms.Plant physiology · 2010Article
- 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
- Aluminum stress signaling in plants.Plant signaling & behavior · 2009Review
- A second mechanism for aluminum resistance in wheat relies on the constitutive efflux of citrate from roots.Plant physiology · 2009Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aluminum (Al(3+))-dependent efflux of malate from root apices is a mechanism for Al(3+) tolerance in wheat (Triticum aestivum). The malate anions protect the sensitive root tips by chelating the toxic Al(3+) cations in the rhizosphere to form non-toxic complexes. Activation of malate-permeable channels in the plasma membrane could be critical in regulating this malate efflux. We examined this by investigating Al(3+)-activated channels in protoplasts from root apices of near-isogenic wheat differing in Al(3+) tolerance at a single locus. Using whole-cell patch clamp we found that Al(3+) stimulated an electrical current carried by anion efflux across the plasma membrane in the Al(3+)-tolerant (ET8) and Al(3+)-sensitive (ES8) genotypes. This current occurred more frequently, had a greater current density, and remained active for longer in ET8 protoplasts than for ES8 protoplasts. The Al(3+)-activated current exhibited higher permeability to malate(2-) than to Cl(-) (P(mal)/P(Cl) > or = 2.6) and was inhibited by anion channel antagonists, niflumate and diphenylamine-2-carboxylic acid. In ET8, but not ES8, protoplasts an outward-rectifying K(+) current was activated in the presence of Al(3+) when cAMP was included in the pipette solution. These findings provide evidence that the difference in Al(3+)-induced malate efflux between Al(3+)-tolerant and Al(3+)-sensitive genotypes lies in the differing capacity for Al(3+) to activate malate permeable channels and cation channels for sustained malate release.
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