ArticleThe Plant cell2005
The Arabidopsis plastidic glucose 6-phosphate/phosphate translocator GPT1 is essential for pollen maturation and embryo sac development.
Article in The Plant cell, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 108 papers.
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108 citing papers in PubMed, 213 citations in OpenAlex.
- Emerging roles of glutaredoxins in plant metabolism.Journal of experimental botany · 2026Review
- ARABIDOPSIS Bsister and SEEDSTICK MADS-box transcription factors modulate maternal nutrient flow for seed development in Arabidopsis.Nature communications · 2026Article
- Expression dynamics of starch and proanthocyanidin biosynthesis genes during Quercus glauca fruit development.BMC plant biology · 2026Article
- PHR1 mediates rapid high light responses and acclimation to high photosynthetic activity.The Plant journal : for cell and molecular biology · 2026Article
- Not just Rubisco: integrated strategies to overcome the biochemical limitations of CFrontiers in plant science · 2026Review
- A plastidic starch biosynthetic pathway defines columella-specific carbon metabolism in rice root tips.Frontiers in plant science · 2026Article
- A plastid carbohydrate carrier mediates ribose recycling from nucleotide catabolism and glucose export from starch degradation.Nature communications · 2025Article
- A Role for the Plastidial GPT2 Translocator in the Modulation of Lignin Biosynthesis.Plant, cell & environment · 2025Article
- Evidence for peroxisomal redundancy among the glucose-6-phosphate dehydrogenase isoforms of Arabidopsis thaliana.Plant & cell physiology · 2025Article
- Cytosolic fructose - an underestimated player in the regulation of sucrose biosynthesis.BMC plant biology · 2025Article
- Weighted Gene Correlation Network Analysis Reveals Key Regulatory Genes Influencing Selenium Enrichment and Yield with Exogenous Selenite in Tartary Buckwheat.Plants (Basel, Switzerland) · 2025Article
- SNP-based linkage mapping reveals novel quantitative trait loci for yield traits in noug (Frontiers in plant science · 2025Article
- Accumulation of dually targeted StGPT1 in chloroplasts mediated by StRFP1, an E3 ubiquitin ligase, enhances plant immunity.Horticulture research · 2024Article
- Photosynthetic Electron Flows and Networks of Metabolite Trafficking to Sustain Metabolism in Photosynthetic Systems.Plants (Basel, Switzerland) · 2024Review
- Functional Analysis of the PoSERK-Interacting Protein PorbcL in the Embryogenic Callus Formation of Tree Peony (Plants (Basel, Switzerland) · 2024Article
- Source-sink synergy is the key unlocking sweet potato starch yield potential.Nature communications · 2024Article
- N-glycosylation of SnRK2s affects NADPH maintenance in peroxisomes during prolonged ABA signalling.Nature communications · 2024Article
- Evidence for dual targeting control of Arabidopsis 6-phosphogluconate dehydrogenase isoforms by N-terminal phosphorylation.Journal of experimental botany · 2024Article
- Analysis of the Candidate Genes and Underlying Molecular Mechanism of P198, an RNAi-Related Dwarf and Sterile Line.International journal of molecular sciences · 2023Article
- Leaf starch metabolism sets the phase of stomatal rhythm.The Plant cell · 2023Article
48 more citing papers are in PubMed but not listed here.
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10 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Plastids of nongreen tissues can import carbon in the form of glucose 6-phosphate via the glucose 6-phosphate/phosphate translocator (GPT). The Arabidopsis thaliana genome contains two homologous GPT genes, AtGPT1 and AtGPT2. Both proteins show glucose 6-phosphate translocator activity after reconstitution in liposomes, and each of them can rescue the low-starch leaf phenotype of the pgi1 mutant (which lacks plastid phosphoglucoisomerase), indicating that the two proteins are also functional in planta. AtGPT1 transcripts are ubiquitously expressed during plant development, with highest expression in stamens, whereas AtGPT2 expression is restricted to a few tissues, including senescing leaves. Disruption of GPT2 has no obvious effect on growth and development under greenhouse conditions, whereas the mutations gpt1-1 and gpt1-2 are lethal. In both gpt1 lines, distorted segregation ratios, reduced efficiency of transmission in males and females, and inability to complete pollen and ovule development were observed, indicating profound defects in gametogenesis. Embryo sac development is arrested in the gpt1 mutants at a stage before the fusion of the polar nuclei. Mutant pollen development is associated with reduced formation of lipid bodies and small vesicles and the disappearance of dispersed vacuoles, which results in disintegration of the pollen structure. Taken together, our results indicate that GPT1-mediated import of glucose 6-phosphate into nongreen plastids is crucial for gametophyte development. We suggest that loss of GPT1 function results in disruption of the oxidative pentose phosphate cycle, which in turn affects fatty acid biosynthesis.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.