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Open research questions in Plant Molecular Biology Research

300 unresolved questions extracted from the limitations and future-work sections of 665 Plant Molecular Biology Research papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Cross-study integration remains limited - Causal validation, pan-genomic analysis, and multi-omics integration remain insufficient - The current evidence remains correlative, and no DlUBC member has yet been functionally validated

    Genomic Resources and Gene Family Studies in Longan (Dimocarpus longan Lour.): Progress, Limitations, and Prospects · 2026 · DOI

  • Integrating high-quality genomic resources with functional validation - Standardized comparative annotation - Improved transformation or regeneration systems - Experimental testing of the hypothesis that ARFs provide a mechanistic bridge between endogenous hormone status and cultivar-specific flowering behavior

    Genomic Resources and Gene Family Studies in Longan (Dimocarpus longan Lour.): Progress, Limitations, and Prospects · 2026 · DOI

  • Most of the work has been conducted in Arabidopsis, and it is unknown whether long-distance amino acid signaling in crops operates by similar principles. The specificity of the long-distance signal is a key unanswered question. Whether the effects of altered transport are due to altered transport per se or secondary changes in metabolism remains debated.

    Amino Acids as Multifunctional Molecules in Plants: From Fundamental Metabolism to Precision Agriculture · 2026 · DOI

  • Unraveling how the distinct signaling layers are coordinated—and how they diverge between model and crop species—is a central challenge in plant signaling biology. Studying the relationship between local signaling functions and the long-distance transport functions of the same amino acids.

    Amino Acids as Multifunctional Molecules in Plants: From Fundamental Metabolism to Precision Agriculture · 2026 · DOI

  • no commercial cultivars with complete parthenocarpy are currently available, - the majority of cases of parthenocarpy were found to be associated with hermaphrodite flowers that remained attached to the fruit after harvesting, - an undesirable trait for zucchini postharvest conservation

    Genome-Wide Methylation and Transcriptomic Analyses Reveal Hormonal Crosstalk in Ethylene-Mediated Parthenocarpy of Zucchini · 2026 · DOI

  • further study of the molecular mechanisms controlling parthenocarpy, - investigation of other mutants that are deficient in ethylene or jasmonic acid, or that are insensitive to jasmonic acid, - analysis of the role of hormonal crosstalk in parthenocarpy

    Genome-Wide Methylation and Transcriptomic Analyses Reveal Hormonal Crosstalk in Ethylene-Mediated Parthenocarpy of Zucchini · 2026 · DOI

  • The regulatory mechanisms underlying wood formation remain incompletely characterized, especially across diverse tree lineages. There is a lack of high-spatial-resolution evo-devo resources for wood transcriptomes spanning multiple dicots and conifers.

    Comparative regulomics of wood formation across dicot and conifer trees · 2026 · DOI

  • Limited understanding of PP2C family evolution and function in Solanaceae crops. Lack of comprehensive cross-species analysis of PP2C gene family members.

    Identification and functional characterization of the PP2C gene family reveal their negative regulatory roles in stress adaptation in Solanaceae · 2026 · DOI

  • comprehensive analysis of TRM genes in melon is lacking, - the study only analyzed the CmTRM gene family in melon, - the regulatory network underlying fruit shape determination is not fully understood

    Genome-Wide Identification and Expression Analysis of the TRM Gene Family in Melon (Cucumis melo L.) · 2026 · DOI

  • further studies on the TRM gene family in melon are needed, - exploration of the potential candidates associated with fruit morphology regulation, - investigation of the molecular regulatory network of CmTRM05

    Genome-Wide Identification and Expression Analysis of the TRM Gene Family in Melon (Cucumis melo L.) · 2026 · DOI

  • Investigate the role of other LcSPL family members in litchi flowering, - Examine the effects of different chilling durations on floral induction, - Explore the potential applications of LcSPL1/3/10-LcFT1 transcriptional cascade in other plant species

    Terminal Shoot Maturity Orchestrates LcSPL–LcFT1 Signaling to Dictate Low-Temperature Floral Induction in Litchi (Litchi chinensis Sonn.) · 2026 · DOI

  • Further investigation of the functional divergence of LBD proteins, - Examination of the expression of closely related homologous genes

    Genome-wide identification and functional characterization of LBD transcription factors uncover their stress adaptation mechanisms in tobacco and eggplant · 2026 · DOI

  • The functions of LBD proteins in tobacco and eggplant are not well understood. There is a lack of knowledge about the expression profiling and subcellular localization of LBD proteins in these plant species. The study aims to fill the gap in knowledge about the roles of LBD proteins in plant stress adaptation.

    Genome-wide identification and functional characterization of LBD transcription factors uncover their stress adaptation mechanisms in tobacco and eggplant · 2026 · DOI

  • Weighting the objectives against one another requires the quantities listed in Section 5.3, - Editing and containment-relevant phenotyping is the first stage requiring transformation, - Assessment of potential impacts on beneficial soil ecosystems

    From rhizome diffusion to programmable architecture: a systems framework for controllable spatial expansion in bamboo and other clonal plants · 2026 · DOI

  • The lack of a comprehensive framework for understanding the spatial expansion of rhizomatous systems. The limited understanding of the mechanistic framework for programmable rhizome control in woody bamboo. The need for a systematic approach to studying the spatial expansion of rhizomatous systems.

    From rhizome diffusion to programmable architecture: a systems framework for controllable spatial expansion in bamboo and other clonal plants · 2026 · DOI

  • Further studies are needed to elucidate the exact mechanisms by which PalKCH1 and PalKCH2 regulate tension wood formation. Investigation of the downstream pathways associated with PalKCH1 and PalKCH2 is required. The role of other kinesin paralogs in tension wood formation should be explored

    PalKCH1 and PalKCH2 are required for tension wood formation and gelatinous layer deposition in Populus · 2026 · DOI

  • The role of kinesins in gelatinous layer biogenesis is unclear. The molecular mechanisms underlying tension wood formation are not well understood. There is a need to investigate the function of PalKCH1 and PalKCH2 in Populus alba var. pyramidalis during tension wood development.

    PalKCH1 and PalKCH2 are required for tension wood formation and gelatinous layer deposition in Populus · 2026 · DOI

  • Investigate the regulation of H2A.W and H2A.Z, - Examine the effects of H2A.W and H2A.Z on other epigenetic marks

    Antagonistic histone H2A variants and autonomous heterochromatin formation shape epigenomic patterns in Arabidopsis · 2026 · DOI

  • The physiological and molecular framework explaining why shoot maturity conditions low-temperature responsiveness has remained elusive. The relationship between shoot maturity and floral competence is not well understood. The mechanisms underlying the effects of shoot maturity on floral induction are unclear.

    Terminal Shoot Maturity Orchestrates LcSPL–LcFT1 Signaling to Dictate Low-Temperature Floral Induction in Litchi (Litchi chinensis Sonn.) · 2026 · DOI

  • The molecular regulation of staminody in Chinese narcissus is poorly understood. The role of transcription factors in staminody is not well characterized.

    Transcriptomic insights into the molecular regulatory mechanism of staminody in Chinese narcissus (Narcissus tazetta subsp. chinensis) · 2026 · DOI

  • Transcriptional memory enables organisms to respond more rapidly to recurrent stress, yet the underlying features of chromatin that contribute to this transcriptional recalibration remain poorly defined.

    Engineering chromatin to encode transcriptional immune memory in Arabidopsis · 2026 · DOI

  • In reproductive tissues, RNA Polymerase IV (Pol IV) is recruited to specific genomic loci by DNA motifs and the transcription factor-GDE1-CLSY3/4 complex to initiate abundant siRNA biogenesis and de novo DNA methylation, but the mechanisms that stabilize the Pol IV transcription complex at these sites remain elusive.

    Dual-Binding Scaffold RRsS1 Bridges Pol IV Transcripts and DNA Templates for Robust Reproductive siRNA Biogenesis · 2026 · DOI

  • Although numerous related omics datasets have been generated, specialized multi-omics databases for this field are still scarce.

    PlantRegMoD: An integrative and AI-driven multi-omics database for plant regeneration research · 2026 · DOI

  • Plant body organization depends on the coordinated development and function of shoots and roots, yet their functional specialization and interdependence remain incompletely understood.

    Shoot loss reveals the latent capacity of Arabidopsis roots to reconstruct the plant body · 2026 · DOI

  • Whereas shoot senescence and death, as well as root regeneration from shoot tissues, are well studied, what capacities roots retain in the absence of the shoot remain unclear.

    Shoot loss reveals the latent capacity of Arabidopsis roots to reconstruct the plant body · 2026 · DOI

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300 open questions have been extracted from the limitations and future-work passages of 665 Plant Molecular Biology Research 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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