ArticleThe Plant cell2022
The sugar transporter ZmSUGCAR1 of the nitrate transporter 1/peptide transporter family is critical for maize grain filling.
Article in The Plant cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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32 citing papers in PubMed, 57 citations in OpenAlex.
- Integrated transcriptomic and metabolomic analysis of a mutant reveals the potential mechanism of endosperm content increase in sweet-waxy double recessive maize.BMC plant biology · 2026Article
- SnRK2.6 phosphorylates sucrose transporter ZmSUT1 to enhance yield by modulating leaf senescence in maize.Science advances · 2026Article
- BnaA07.SUC2 regulated by BnaA05.MYC2 in jasmonate pathway promotes oilseed rape susceptibility to Plasmodiophora brassicae.PLoS pathogens · 2026Article
- Subclass III SnRK2 Kinases Coordinate Starch and Storage Protein Synthesis During Maize Kernel Development.Plant biotechnology journal · 2026Article
- Identification of transcription factors regulating starch biosynthesis in maize through integrated GWAS and transcriptomic analysis.BMC plant biology · 2026Article
- Functional characterization of NRT1/PTR FAMILY transporters: looking for a needle in a haystack.The New phytologist · 2026Review
- Towards a Holistic View of the Orchestration Between Sugar Transporters in Cereal Crops.Plants (Basel, Switzerland) · 2026Article
- Transcriptome and targeted metabolome analysis reveals sugar metabolism regulation in maize stalks at different densities.Frontiers in plant science · 2026Article
- From development to yield: genetic and molecular regulation of agronomic traits in maize seeds.Frontiers in plant science · 2026Review
- Decades' progress and prospects on maize functional genomics and molecular breeding.Science China. Life sciences · 2025Review
- TheHorticulture research · 2025Article
- Evaluating the Potential of Co-supplementation of Zinc and Ferrous Iron Ion for Itaconic Acid Fermentation of Aspergillus terreus.Applied biochemistry and biotechnology · 2025Article
- Genome-wide identification of key genes related to chloride ion (ClBMC genomics · 2025Article
- Non-invasive micro-test technology and applications.Biophysics reports · 2025Article
- Barriers and carriers for transition metal homeostasis in plants.Plant communications · 2025Review
- ZmCCD8 regulates sugar and amino acid accumulation in maize kernels via strigolactone signalling.Plant biotechnology journal · 2025Article
- Physiological and Transcriptome Analyses Provide Insights into the Response of Grain Filling to High Temperature in Male-Sterile Wheat (International journal of molecular sciences · 2024Article
- Sugar import mediated by sugar transporters and cell wall invertases for seed development inHorticulture research · 2024Article
- Central Roles of ZmNAC128 and ZmNAC130 in Nutrient Uptake and Storage during Maize Grain Filling.Genes · 2024Article
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Authors and funding
23 authors at 6 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Maternal-to-filial nutrition transfer is central to grain development and yield. nitrate transporter 1/peptide transporter (NRT1-PTR)-type transporters typically transport nitrate, peptides, and ions. Here, we report the identification of a maize (Zea mays) NRT1-PTR-type transporter that transports sucrose and glucose. The activity of this sugar transporter, named Sucrose and Glucose Carrier 1 (SUGCAR1), was systematically verified by tracer-labeled sugar uptake and serial electrophysiological studies including two-electrode voltage-clamp, non-invasive microelectrode ion flux estimation assays in Xenopus laevis oocytes and patch clamping in HEK293T cells. ZmSUGCAR1 is specifically expressed in the basal endosperm transfer layer and loss-of-function mutation of ZmSUGCAR1 caused significantly decreased sucrose and glucose contents and subsequent shrinkage of maize kernels. Notably, the ZmSUGCAR1 orthologs SbSUGCAR1 (from Sorghum bicolor) and TaSUGCAR1 (from Triticum aestivum) displayed similar sugar transport activities in oocytes, supporting the functional conservation of SUGCAR1 in closely related cereal species. Thus, the discovery of ZmSUGCAR1 uncovers a type of sugar transporter essential for grain development and opens potential avenues for genetic improvement of seed-filling and yield in maize and other grain crops.
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