ArticlePlant physiology2011
The sink-specific plastidic phosphate transporter PHT4;2 influences starch accumulation and leaf size in Arabidopsis.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed, 67 citations in OpenAlex.
- Genome-wide identification of phosphate transporter gene family in Trichoderma harzianum and expression in response to biotic and abiotic stress.Scientific reports · 2026Article
- Genome-Wide Identification and Expression Analysis of the Phosphate Transporter Gene Family inInternational journal of molecular sciences · 2025Article
- Integrating molecular mechanisms and agronomic strategies for selenium biofortification in horticultural crops.Frontiers in plant science · 2025Review
- Mobilization and recycling of intracellular phosphorus in response to availability.Quantitative plant biology · 2025Review
- Chloroplast phosphate transporter CrPHT4-7 regulates phosphate homeostasis and photosynthesis in Chlamydomonas.Plant physiology · 2024Article
- Geographic-genomic and geographic-phenotypic differentiation of theHorticulture research · 2023Article
- Comprehensive sequence and expression profile analysis of the phosphate transporter gene family in soybean.Scientific reports · 2022Article
- scCloudMine: A cloud-based app for visualization, comparison, and exploration of single-cell transcriptomic data.Plant communications · 2022Article
- A BTB-TAZ protein is required for gene activation by Cauliflower mosaic virus 35S multimerized enhancers.Plant physiology · 2022Article
- Roles of plastid-located phosphate transporters in carotenoid accumulation.Frontiers in plant science · 2022Review
- Intracellular phosphate sensing and regulation of phosphate transport systems in plants.Plant physiology · 2021Review
- Potential Networks of Nitrogen-Phosphorus-Potassium Channels and Transporters in Arabidopsis Roots at a Single Cell Resolution.Frontiers in plant science · 2021Article
- Role of Silicon in Mediating Phosphorus Imbalance in Plants.Plants (Basel, Switzerland) · 2020Review
- Genome-Wide Analysis of the Five Phosphate Transporter Families inInternational journal of molecular sciences · 2020Article
- Genome-Wide Analysis of Phosphorus Transporter Genes inInternational journal of molecular sciences · 2020Article
- Global Survey and Expressions of the Phosphate Transporter Gene Families inInternational journal of molecular sciences · 2020Article
- Article
- Cellular and Subcellular Phosphate Transport Machinery in Plants.International journal of molecular sciences · 2018Review
- Comprehensive Genomic Identification and Expression Analysis of the Phosphate Transporter (PHT) Gene Family in Apple.Frontiers in plant science · 2017Article
- A voltage-dependent chloride channel fine-tunes photosynthesis in plants.Nature communications · 2016Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nonphotosynthetic plastids are important sites for the biosynthesis of starch, fatty acids, and amino acids. The uptake and subsequent use of cytosolic ATP to fuel these and other anabolic processes would lead to the accumulation of inorganic phosphate (Pi) if not balanced by a Pi export activity. However, the identity of the transporter(s) responsible for Pi export is unclear. The plastid-localized Pi transporter PHT4;2 of Arabidopsis (Arabidopsis thaliana) is expressed in multiple sink organs but is nearly restricted to roots during vegetative growth. We identified and used pht4;2 null mutants to confirm that PHT4;2 contributes to Pi transport in isolated root plastids. Starch accumulation was limited in pht4;2 roots, which is consistent with the inhibition of starch synthesis by excess Pi as a result of a defect in Pi export. Reduced starch accumulation in leaves and altered expression patterns for starch synthesis genes and other plastid transporter genes suggest metabolic adaptation to the defect in roots. Moreover, pht4;2 rosettes, but not roots, were significantly larger than those of the wild type, with 40% greater leaf area and twice the biomass when plants were grown with a short (8-h) photoperiod. Increased cell proliferation accounted for the larger leaf size and biomass, as no changes were detected in mature cell size, specific leaf area, or relative photosynthetic electron transport activity. These data suggest novel signaling between roots and leaves that contributes to the regulation of leaf size.
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