ArticleJournal of experimental botany2010
Arabidopsis thaliana POLYOL/MONOSACCHARIDE TRANSPORTERS 1 and 2: fructose and xylitol/H+ symporters in pollen and young xylem cells.
Article in Journal of experimental botany, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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35 citing papers in PubMed, 77 citations in OpenAlex.
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- Molecular mechanisms and evolutionary adaptations of transporters for photosynthates and specialized metabolites in plants.Plant cell reports · 2026Review
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- Major Facilitator Superfamily transporters balance sugar metabolism in peach.Plant physiology · 2025Article
- Single-cell RNA-seq reveals a link of ovule abortion and sugar transport inFrontiers in plant science · 2024Article
- Elemental profiling and genome-wide association studies reveal genomic variants modulating ionomic composition inFrontiers in plant science · 2024Article
- Overexpression ofInternational journal of molecular sciences · 2023Article
- Review
- An ortholog of the MADS-box gene SEPALLATA3 regulates stamen development in the woody plant Jatropha curcas.Planta · 2022Article
- Transcriptome and Small RNA Sequencing Reveal the Mechanisms Regulating Harvest Index inFrontiers in plant science · 2022Article
- Salt-Specific Gene Expression Reveals Elevated Auxin Levels inFrontiers in plant science · 2022Article
- Differential regulation of drought stress by biological membrane transporters and channels.Plant cell reports · 2021Review
- Molecular Targets and Biological Functions of cAMP Signaling inBiomolecules · 2021Article
- Comparative Dynamic Transcriptome Reveals the Delayed Secondary-Cell-Wall Thickening Results in Altered Lint Percentage and Fiber Elongation in a Chromosomal Segment Substitution Line of Cotton (Frontiers in plant science · 2021Article
- Genome-Wide Identification and Expression Analysis of Sugar Transporter (ST) Gene Family in Longan (Plants (Basel, Switzerland) · 2020Article
- Genome-wide identification, expression, and association analysis of the monosaccharide transporter (MST) gene family in peanut (3 Biotech · 2020Article
- The sugar transporter system of strawberry: genome-wide identification and expression correlation with fruit soluble sugar-related traits in aHorticulture research · 2020Article
- Micro-Evolution Analysis Reveals Diverged Patterns of Polyol Transporters in Seven Gramineae Crops.Frontiers in genetics · 2020Article
- Article
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7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The genome of Arabidopsis thaliana contains six genes, AtPMT1 to AtPMT6 (Arabidopsis thaliana POLYOL/MONOSACCHARIDE TRANSPORTER 1-6), which form a distinct subfamily within the large family of more than 50 monosaccharide transporter-like (MST-like) genes. So far, only AtPMT5 [formerly named AtPLT5 (At3g18830)] has been characterized and was shown to be a plasma membrane-localized H(+)-symporter with broad substrate specificity. The characterization of AtPMT1 (At2g16120) and AtPMT2 (At2g16130), two other, almost identical, members of this transporter subfamily, are presented here. Expression of the AtPMT1 and AtPMT2 cDNAs in baker's yeast (Saccharomyces cerevisiae) revealed that these proteins catalyse the energy-dependent, high-capacity transport of fructose and xylitol, and the transport of several other compounds with lower rates. Expression of their cRNAs in Xenopus laevis oocytes showed that both proteins are voltage-dependent and catalyse the symport of their substrates with protons. Fusions of AtPMT1 or AtPMT2 with the green fluorescent protein (GFP) localized to Arabidopsis plasma membranes. Analyses of reporter genes performed with AtPMT1 or AtPMT2 promoter sequences showed expression in mature (AtPMT2) or germinating (AtPMT1) pollen grains, as well as in growing pollen tubes, hydathodes, and young xylem cells (both genes). The expression was confirmed with an anti-AtPMT1/AtPMT2 antiserum (alphaAtPMT1/2) raised against peptides conserved in AtPMT1 and AtPMT2. The physiological roles of the proteins are discussed and related to plant cell wall modifications.
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