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Open research questions in Plant nutrient uptake and metabolism

85 unresolved questions extracted from the limitations and future-work sections of 244 Plant nutrient uptake and metabolism papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The role of BcPHT1;9 in phosphate uptake and root architecture is not well understood. The mechanisms of phosphate homeostasis and root architectural adaptation in flowering Chinese cabbage are not fully understood.

    BcPHT1;9 mediates phosphate uptake and modulates root architecture in flowering Chinese cabbage · 2026 · DOI

  • Development of high-throughput screening platforms that translate molecular knowledge into tractable and scalable assays, - Designing screens that favor robust, quantitative, and miniaturized systems compatible with high-throughput formats, - Investigation of the molecular mechanisms governing nitrogen uptake, transport, assimilation, and signaling

    High-throughput screening for biostimulant discovery: opportunities to enhance nitrogen use efficiency · 2026 · DOI

  • Further studies could investigate the effects of varying nitrogen levels on sugar beet growth and development - Research could focus on optimizing fertilizer management and improving nitrogen use efficiency

    Combined transcriptome and metabolome analysis reveals nitrogen-responsive genes and metabolites in sugar beet (Beta vulgaris L.) seedlings · 2026 · DOI

  • The molecular mechanisms governing sugar beet's responses to varying nitrogen supply levels are not fully characterized. There is a need to understand how sugar beet responds to varying nitrogen levels at the molecular level to optimize fertilizer management and improve nitrogen use efficiency.

    Combined transcriptome and metabolome analysis reveals nitrogen-responsive genes and metabolites in sugar beet (Beta vulgaris L.) seedlings · 2026 · DOI

  • Further verification of the improvement in photosynthetic performance through measurements such as the A/Ci curve or chlorophyll fluorescence is needed. Investigation of the effects of topping on other crops is suggested.

    Topping influences crop photosynthesis and alters the absorption and redistribution of nutrients: a case study of tobacco · 2025 · DOI

  • The urease inhibitor NBPT reduces ammonia loss, yet its effects on root morphology, nitrogen-metabolizing enzymes and exudation under salinity remain unclear.

    NBPT improves root morphology and yield of cotton under salinity through changes in root nitrogen-metabolizing enzymes · 2026 · DOI

  • However, whether mechanisms established in Arabidopsis are conserved and agronomically relevant in other crop species remains to be fully established.

    NRT1.1 as central signaling hub orchestrating plant growth and stress trade-offs · 2026 · DOI

  • Furthermore, we synthesized recent advancements in understanding the molecular regulatory mechanisms of these transporters and identified key scientific questions warranting further investigation.

    Sugar transporters: mediators of carbon flow between plants and microbes · 2025 · DOI

  • However, the mechanisms by which topping influences photosynthesis and the leaf structure, and regulation of chemical composition remain unclear.

    Topping influences crop photosynthesis and alters the absorption and redistribution of nutrients: a case study of tobacco · 2025 · DOI

  • However, the precise physiological mechanisms by which root exudates derived from these systems on crop growth have not been characterized.

    Application of root exudates derived from peanut/maize intercropping system promotes peanut growth and yield via modulating nitrogen turnover processes · 2025 · DOI

  • However, the mechanisms controlling the distribution of these N morphologies are not fully understood.

    Amino acid metabolism pathways as key regulators of nitrogen distribution in tobacco: insights from transcriptome and WGCNA analyses · 2025 · DOI

  • melo) crop are still unknown, and the functional differentiation of melon genes remains unclear.

    Comprehensive characterization and expression profiling of sucrose phosphate synthase (SPS) and sucrose synthase (SUS) family in Cucumis melo under the application of nitrogen and potassium · 2025 · DOI

  • 23 is known to be involved in drought stress, the underlying mechanism of resistance differs between Arabidopsis and rice, and little is known about its function in wheat.

    TaSnRK3.23B, a CBL-interacting protein kinase of wheat, confers drought stress tolerance by promoting ROS scavenging in Arabidopsis · 2025 · DOI

  • These findings elucidate molecular responses to exogenous sugar treatment and offer a foundation for further investigation of gene functions in postharvest fruit quality regulation.

    Combined analysis of metabolomics and transcriptomics reveals the effects of sugar treatment on postharvest strawberry fruit quality · 2025 · DOI

  • Nitrate (represented by NN or NO3−-N) and ammonium (represented by AN or NH4+-N) are the two predominant nitrogen (N) forms utilized by plants; however, the physiological mechanisms underlying citrus response to different N forms are still poorly understood.

    Nitrate improves plant growth by promoting nitrogen assimilation and photosynthetic performance in citrus seedlings · 2025 · DOI

  • However, the relationship between root exudates and P concentration in the shoot and root, as well as the role of AMF in this process, is not yet fully understood.

    The balance between rhizosphere carboxylates and arbuscular mycorrhizal symbiosis in wheat phosphorus acquisition · 2025 · DOI

  • However, the specific patterns of membrane lipid remodeling and their regulatory effects on photosynthetic performance remain to be elucidated.

    Effects of phosphorus deficiency on lipid composition and photosynthesis process in Zygophyllum xanthoxylum · 2025 · DOI

  • The fruit of Prunus mume, a plant with medicinal and edible properties, contains sugars and organic acids as its vital ingredients, yet, their metabolic characteristics and regulatory mechanisms remain unclear.

    Identification of pivotal genes associated with sugar and organic acid metabolism during Prunus Mume fruit ripening via metabolomic and transcriptomic analyses · 2025 · DOI

  • Yet the effects of nitrogen and planting density on IbINVs expression remains unexplored in sweetpotato.

    Genome-wide identification of invertase genes in sweetpotato and its response to nitrogen and planting densities · 2025 · DOI

  • However, the dynamics of the metabolites including sugar during carrot root development still remain unclear.

    Integrated metabolome analysis and transcript profiles revealed a potential role of SWEETs in sugar accumulation during Carrot taproot development · 2025 · DOI

  • Traditionally, direct selection for root and coleoptile traits has been limited by the lack of suitable phenotyping methods, genetic and phenotypic complexity, and poor repeatability in sampling.

    High-throughput phenotyping of wheat root angle and coleoptile length at different temperatures using 3D-printed equipment · 2025 · DOI

  • Critically, sustainable alternatives remain underexplored, particularly regarding microbiome-driven P activation.

    Unlocking phosphorus resources: phosphate-solubilizing microorganisms as a green strategy for activating phosphorus in acidic red soils and promoting crop growth · 2025 · DOI

  • Although the interest in root traits has increased in recent years, we still have limited knowledge of (i) whether functionally different fine roots-absorptive versus transport roots-have similar trait coordination and (ii) how they help to explain plant performance, such as growth.

    Tree growth is better explained by absorptive fine root traits than by transport fine root traits · 2025 · DOI

  • The comprehensive understanding of how arbuscular mycorrhizal fungi (AMF) and phosphorus (P) application affect P uptake by alfalfa roots is poorly understood.

    Mycorrhiza Inoculation and Soil-Available Phosphorus Modulate Phosphorus Acquisition Strategies of Alfalfa · 2025 · DOI

  • Despite its significance, there is limited research on sugar component quality and the expression and regulatory prediction of SPS genes during citrus fruit development.

    Analysis of sugar components and identification of SPS genes in citrus fruit development · 2024 · DOI

Most-cited papers in Plant nutrient uptake and metabolism

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85 open questions have been extracted from the limitations and future-work passages of 244 Plant nutrient uptake and metabolism papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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