ArticlePlant physiology2001
A patch-clamp study on the physiology of aluminum toxicity and aluminum tolerance in maize. Identification and characterization of Al(3+)-induced anion channels.
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 34 papers.
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Who cites it
34 citing papers in PubMed, 207 citations in OpenAlex.
- The NAC transcription factor ANAC017 regulates aluminum tolerance by regulating the cell wall-modifying genes.Plant physiology · 2022Article
- Morpho-physiological characterization coupled with expressional accord of exclusion mechanism in wild and cultivated lentil under aluminum stress.Protoplasma · 2021Article
- Rhizosphere Soil Fungal Communities of Aluminum-Tolerant and -Sensitive Soybean Genotypes Respond Differently to Aluminum Stress in an Acid Soil.Frontiers in microbiology · 2020Article
- Understanding transport processes in lichen,F1000Research · 2020Review
- Development of a novel and rapid phenotype-based screening method to assess rice seedling growth.Plant methods · 2020Article
- Mechanisms and regulation of aluminum-induced secretion of organic acid anions from plant roots.Journal of Zhejiang University. Science. B · 2019Review
- The Cell Cycle Checkpoint Regulator ATR Is Required for Internal Aluminum Toxicity-Mediated Root Growth Inhibition inFrontiers in plant science · 2018Article
- The ALMT Family of Organic Acid Transporters in Plants and Their Involvement in Detoxification and Nutrient Security.Frontiers in plant science · 2016Review
- Roles of organic acid anion secretion in aluminium tolerance of higher plants.BioMed research international · 2013Review
- 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
- Molecular Evolution of Slow and Quick Anion Channels (SLACs and QUACs/ALMTs).Frontiers in plant science · 2012Article
- 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
- 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
- The BnALMT1 and BnALMT2 genes from rape encode aluminum-activated malate transporters that enhance the aluminum resistance of plant cells.Plant physiology · 2006Article
- Citrate transporters play a critical role in aluminium-stimulated citrate efflux in rice bean (Vigna umbellata) roots.Annals of botany · 2006Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The presence of Al(3+) in the rhizosphere induces citrate efflux from the root apex of the Al-tolerant maize (Zea mays) hybrid South American 3, consequently chelating and reducing the activity of toxic Al(3+) at the root surface. Because citrate is released from root apical cells as the deprotonated anion, we used the patch-clamp technique in protoplasts isolated from the terminal 5 mm of the root to study the plasma membrane ion transporters that could be involved in Al-tolerance and Al-toxicity responses. Acidification of the extracellular environment stimulated inward K(+) currents while inhibiting outward K(+) currents. Addition of extracellular Al(3+) inhibited the remaining K(+) outward currents, blocked the K(+) inward current, and caused the activation of an inward Cl(-) current (anion efflux). Studies with excised membrane patches revealed the existence of Al-dependent anion channels, which were highly selective for anions over cations. Our success in activating this channel with extracellular Al(3+) in membrane patches excised prior to any Al(3+) exposure indicates that the machinery required for Al(3+) activation of this channel, and consequently the whole root Al(3+) response, is localized to the root-cell plasma membrane. This Al(3+)-activated anion channel may also be permeable to organic acids, thus mediating the Al-tolerance response (i.e. Al-induced organic acid exudation) observed in intact maize root apices.
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