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Open research questions in Plant Gene Expression Analysis

136 unresolved questions extracted from the limitations and future-work sections of 369 Plant Gene Expression Analysis papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Investigate the functional roles of the SbAP2/ERF genes, - Analyze the expression patterns of the SbAP2/ERF genes in response to different stresses, - Compare the AP2/ERF family in S. baicalensis with other plant species

    Genome-wide characterization of the AP2/ERF gene family in Scutellaria baicalensis Georgi reveals root-preferential and MeJA-responsive candidate genes · 2026 · DOI

  • Lack of systematic characterization of the AP2/ERF family in S. baicalensis. Limited understanding of the transcriptional regulation of flavone biosynthesis in S. baicalensis. Need for identification of root-preferential and MeJA-responsive candidate genes in S. baicalensis.

    Genome-wide characterization of the AP2/ERF gene family in Scutellaria baicalensis Georgi reveals root-preferential and MeJA-responsive candidate genes · 2026 · DOI

  • The paper identifies the challenge of understanding the complex interactions between flavonoids, hormone signaling, and developmental plasticity. It highlights the need to address the spatial aspects of flavonoid function, including root–shoot communication and rhizosphere microbiota recruitment. The paper also discusses the challenge of translating the proposed flavonoid-centered stress network into practical applications, such as metabolic engineering and breeding strategies.

    Flavonoids in Plant Salt Stress Responses: Biosynthesis, Regulation, Functions, and Signaling Networks · 2026 · DOI

  • Investigating the role of flavonoids in salt stress tolerance, - Exploring the potential of flavonoids in metabolic engineering, bio-stimulant design, and breeding strategies, - Studying the mechanisms of flavonoid-dependent tuning of auxin and ABA signaling in roots and shoots

    Flavonoids in Plant Salt Stress Responses: Biosynthesis, Regulation, Functions, and Signaling Networks · 2026 · DOI

  • Further studies are needed to investigate the functional roles of RiUGT43 in flower color development, - The regulatory mechanisms of RiUGT43 in anthocyanin accumulation need to be explored, - The study of UGT family in other plant species could provide more insights into the evolutionary characteristics and regulatory roles

    Genome-wide analysis of the UGT gene family in Rhododendron and transcriptional correlation of RiUGT43 with anthocyanin accumulation · 2026 · DOI

  • The interplay between MYB TFs and phytohormones in mediating abiotic stress tolerance is not well understood. The molecular mechanisms of MYB TFs in responding to abiotic stresses are not fully explored.

    Structure, evolution, and roles of MYB transcription factors proteins in secondary metabolite biosynthetic pathways and abiotic stresses responses in plants: a comprehensive review · 2025 · DOI

  • The mechanisms governing the synthesis of secondary metabolites in plants are not fully understood. There is a need to understand the regulatory mechanisms of transcription factors in plant secondary metabolism. The paper identifies the gap in understanding the biosynthetic regulatory mechanisms of secondary metabolites.

    Multidimensional regulation of transcription factors: decoding the comprehensive signals of plant secondary metabolism · 2025 · DOI

  • The unclear role of WRKY proteins in regulating tomato resistance to bacterial wilt, - The lack of understanding of the molecular mechanisms underlying tomato resistance to R. solanacearum

    A WRKY transcription factor, SlWRKY75, positively regulates tomato (Solanum lycopersicum L.) resistance to Ralstonia solanacearum · 2025 · DOI

  • The complexity of the phenylpropanoid pathway. The lack of understanding of the regulatory functions of R2R3-MYB transcription factors. The difficulty in analyzing the homeostatic equilibrium of metabolite synthesis via different pathways.

    PbMYB5 transcription factor plays a role in regulating anthocyanin biosynthesis in pear (Pyrus bretschneideri Rehd) skin · 2025 · DOI

  • little is known regarding the impact of top removal on protein and metabolic regulation - the underlying processes of alterations in cigar tobacco leaves with and without top removal are unknown

    Proteomic and metabolomic insights into the impact of topping treatment on cigar tobacco · 2025 · DOI

  • the study only explored Rbohs in poplar species, - the sample size was limited to five poplar species, - the study did not explore the functional mechanisms of Rbohs in other plant species

    Functional analysis and interaction networks of Rboh in poplar under abiotic stress · 2025 · DOI

  • The lack of understanding of Rboh genes in poplar species. The need to explore the characteristics and functional diversity of Rbohs in poplar. The limited knowledge of the interaction networks of Rboh genes in poplar.

    Functional analysis and interaction networks of Rboh in poplar under abiotic stress · 2025 · DOI

  • Further studies are needed to investigate the functional roles of the R2R3-MYB genes in other plant species, - Investigation of the regulatory mechanisms of the R2R3-MYB genes in response to environmental stresses, - Analysis of the R2R3-MYB genes in other crops to enhance stress resilience

    Pan-genome analysis of the R2R3-MYB genes family in Brassica napus unveils phylogenetic divergence and expression profiles under hormone and abiotic stress treatments · 2025 · DOI

  • The mechanisms by which WRKY transcription factors regulate anthocyanin accumulation are unknown. There is a lack of comprehensive WRKY family characterization in E. japonica.

    Genome-Wide Identification and Co-Expression Analysis of WRKY Genes Unveil Their Role in Regulating Anthocyanin Accumulation During Euscaphis japonica Fruit Maturation · 2025 · DOI

  • The molecular and genetic causes of petal coloration are not fully understood. The role of the R2R3-MYB family in regulating petal coloration is not well characterized.

    The Mutations in RcMYB114 Affect Anthocyanin Glycoside Accumulation in Rose · 2025 · DOI

  • The scarcity of natural germplasm resources exhibiting flower colors other than yellow. The complexity of anthocyanin biosynthesis and regulation in rapeseed. The need for a comprehensive understanding of the metabolic and regulatory processes involved in pigment accumulation in B. napus flowers.

    Combined Multi-Omics and Co-Expression Network Analyses Uncover the Pigment Accumulation Mechanism of Orange-Red Petals in Brassica napus L. · 2025 · DOI

  • explore internal resistance genes to improve maize resistance, - investigate the molecular mechanisms of host disease resistance, - study the response of maize to other pathogens

    Transcriptomic and Metabolomic Analyses Reveal the Role of Phenylalanine Metabolism in the Maize Response to Stalk Rot Caused by Fusarium proliferatum · 2024 · DOI

  • the research on fruit corn with high anthocyanin content is not extensive - the genetic regulation of anthocyanin synthesis in maize has not been thoroughly studied

    Cloned genes and genetic regulation of anthocyanin biosynthesis in maize, a comparative review · 2024 · DOI

  • Further studies could investigate the molecular mechanisms behind the downregulation of anthocyanins in heat-sensitive varieties, - Research could focus on developing heat-tolerant chrysanthemum varieties with stable anthocyanin content

    Analysis of Transcriptional and Metabolic Differences in the Petal Color Change Response to High-Temperature Stress in Various Chrysanthemum Genotypes · 2024 · DOI

  • The molecular mechanisms behind color change in chrysanthemum petals under high-temperature stress are not well understood. The key anthocyanins and genes involved in color change are not identified. The differential expression of genes involved in anthocyanin biosynthesis and degradation is not well studied.

    Analysis of Transcriptional and Metabolic Differences in the Petal Color Change Response to High-Temperature Stress in Various Chrysanthemum Genotypes · 2024 · DOI

  • Further studies on the molecular mechanisms of nitrogen use efficiency, - Investigation of the functional roles of the newly predicted genes

    Establishment of comparative transcriptome dataset related to nitrogen use efficiency in melon · 2026 · DOI

  • The molecular mechanisms underlying nitrogen use efficiency in melon are not well understood. There is a lack of comparative transcriptome datasets related to nitrogen use efficiency in melon. Prior studies have focused on improving nitrogen use efficiency in crops, but more research is needed to understand the specific mechanisms in melon.

    Establishment of comparative transcriptome dataset related to nitrogen use efficiency in melon · 2026 · DOI

  • Further research is needed to understand the mechanisms responsible for the regulation of anthocyanin metabolism in rapeseed. Breeding programs could focus on introducing novel flower colors into rapeseed varieties. The development of new ornamental rapeseed varieties with diverse flower colors could be explored.

    Combined Multi-Omics and Co-Expression Network Analyses Uncover the Pigment Accumulation Mechanism of Orange-Red Petals in Brassica napus L. · 2025 · DOI

  • Further experimental validation of the regulatory functions of CpMYB genes is needed

    Genome-Wide Identification and Expression Analysis of MYB Transcription Factors Involved in Lignin Biosynthesis in Elephant Grass (Cenchrus purpureus) · 2025 · DOI

  • Plants produce a vast diversity of chemical compounds, yet the evolutionary history of the underlying complex metabolic networks remains poorly understood.

    Establishment of the grass lignin metabolic network during monocot evolution · 2026 · DOI

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136 open questions have been extracted from the limitations and future-work passages of 369 Plant Gene Expression Analysis 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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