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Open research questions in Plant responses to water stress

100 unresolved questions extracted from the limitations and future-work sections of 368 Plant responses to water stress papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Further study on the effects of ALAD suppression on citrus plants, - Investigation of the role of ALAD in other plant species, - Analysis of the long-term effects of ALAD suppression on plant growth and development

    Transcriptomic and predictive modeling reveal photosynthetic and stress responses associated with ALAD silencing in citrus · 2026 · DOI

  • The lack of understanding of the physiological and transcriptomic consequences of ALAD suppression in citrus plants. The need for predictive models to identify key regulatory nodes in photosynthesis and redox states.

    Transcriptomic and predictive modeling reveal photosynthetic and stress responses associated with ALAD silencing in citrus · 2026 · DOI

  • The gap in understanding the effects of water regulation on the rhizosphere microbial community of dryland rice. The need to study the correlation between root organic acids and rhizosphere microbial communities in dryland rice under Cd stress.

    The effect of water regulation on organic acids and rhizosphere microorganisms in the root system of drought-tolerant rice under Cd stress · 2026 · DOI

  • In summary, this study elucidated the regulatory effects of different water management regimes on root organic acids and rhizosphere microorganisms of aerobic rice under Cd stress, revealed the rhizosphere ecological adaptation mechanisms, and provided new strategies and methods for agroecological regulation and soil health management, as well as a theoretical basis for further research on rice root environment and microbial interaction mechanisms.

    The effect of water regulation on organic acids and rhizosphere microorganisms in the root system of drought-tolerant rice under Cd stress · 2026 · DOI

  • The functional mechanism of ZmEIL2 in drought tolerance remains poorly understood. The molecular basis of maize drought tolerance has become an urgent priority for sustainable agriculture.

    ZmEIL2 positively regulates drought tolerance in maize by modulating stomatal movement, hormonal homeostasis, and antioxidant defense · 2026 · DOI

  • The challenge of understanding the complex interactions between glycinebetaine, water stress, and maize variety. The difficulty of identifying the optimal concentration of glycinebetaine for improving maize tolerance to water stress. The need to overcome the limitations of prior research on glycinebetaine and plant stress responses.

    Exogenous Glycinebetaine Regulates the Contrasting Responses in Leaf Physiochemical Attributes and Growth of Maize under Drought and Flooding Stresses · 2024 · DOI

  • Further research is needed to explore the effects of GB on other crops under different abiotic stresses. The molecular mechanisms of GB in regulating the antioxidant ability of maize need to be investigated. The optimal concentration of GB for different crops and water stresses needs to be determined.

    Exogenous Glycinebetaine Regulates the Contrasting Responses in Leaf Physiochemical Attributes and Growth of Maize under Drought and Flooding Stresses · 2024 · DOI

  • Further study is needed to evaluate the submergence tolerance of rice and analyze the mechanism of submergence. The breeding of submergence-resistant rice varieties requires a deeper understanding of the response mechanism of rice plants to submergence stress. Research on the physiological changes in rice during the recovery period is needed.

    Submergence Stress Reduces the Ability of Rice to Regulate Recovery after Disaster · 2024 · DOI

  • The paper identifies a gap in the understanding of the effects of flooding stress on rice, particularly in the recovery period after the disaster. Previous studies have primarily focused on immediate yield reduction and short-term growth. The authors note that the mechanism of physiological changes in rice during the recovery period needs to be explored.

    Submergence Stress Reduces the Ability of Rice to Regulate Recovery after Disaster · 2024 · DOI

  • Juncus lomatophyllus, an indigenous South African aquatic plant with reported tyrosinase-inhibitory activity and potential cosmeceutical value, remains poorly studied regarding large-scale propagation.

    Effect of Growing Substrate, Season, and Genotype on Vegetative Propagation (Division) of the Wetland Rush, Juncus lomatophyllus · 2026 · DOI

  • Although Indole-3-acetic acid (IAA) and exopolysaccharides (EPS) are well-established PGPR-associated factors, their combined contributions to waterlogging tolerance in soybean remain unclear.

    Enhancing the Resistance of Soybean Plants to Waterlogging Stress Using Gamma-Irradiated Priestia megaterium · 2026 · DOI

  • Industrial hemp is often considered sensitive to waterlogging; however, empirical evidence remains scarce.

    Industrial Hemp Response to Waterlogging Stress: Influence of Duration and Growth Stage on Physiological Performance and Yield · 2026 · DOI

  • While the impact of these stresses has been individually studied, there is a significant gap in understanding their combined effects within the same growing season.

    Dual stress, equivalent harm? hypothesizing on the type of interactions between waterlogging and high temperature · 2025 · DOI

  • Reviewing the scarce literature we found, against expectations, that antagonistic interactions were most common, followed by cases of additive effects, with synergistic interactions being rare.

    Dual stress, equivalent harm? hypothesizing on the type of interactions between waterlogging and high temperature · 2025 · DOI

  • Although each stress individually has been well studied, little is known about the response of cereals to successive water stresses, condition that often occurs in real-world scenarios.

    Divergent effects of successive drought and flooding on photosynthesis in wheat and barley · 2025 · DOI

  • Although the CBF/DREB1 family has been identified in many plants, studies of the CBF/DREB1 family in alfalfa are insufficient.

    Genome-wide identification and expression analysis of CBF/DREB1 gene family in Medicago sativa L. and functional verification of MsCBF9 affecting flowering time · 2025 · DOI

  • However, the mechanisms underlying the dynamic formation process of aerenchyma remain poorly understood, largely due to the time-consuming and labor-intensive nature of traditional sectioning methods for analyzing aerenchyma formation.

    The role of OsRGA1 in aerenchyma formation and adventitious root growth in rice seedlings based on the U-Gompertz model · 2025 · DOI

  • The accumulation mechanism of flavonoids in quinoa under abiotic stress has been reported, but there are few reports on the accumulation of flavonoids in quinoa seedlings under waterlogging.

    Joint analysis of transcriptome and metabolome on the accumulation mechanism of flavonoids in quinoa seedlings under flooding stress · 2025 · DOI

  • However, few studies have focused on submergence tolerance during seed germination; thus, the genetic basis of submergence tolerance at this stage deserves more attention.

    Identification of submergence tolerance QTLs/genes during seed germination in 432 rice varieties by GWAS · 2025 · DOI

  • The molecular and metabolic mechanisms underlying its waterlogging response remain poorly understood.

    Unraveling the genetic mechanisms of waterlogging stress through the leaf metabolome of a sweet corn panel · 2025 · DOI

  • However, the Changes in microbial communities and the interactions under waterlogging stress in sesame have not been documented.

    Soil bacteria and fungi diversity analysis reveals effects of sesame (Sesamum indicum L.) under waterlogging stress · 2025 · DOI

  • However, limited research has addressed the effects of long-term WL stress at different developmental stages on the yield and physiological responses of forage maize.

    Effects of Waterlogging at Different Developmental Stages on Growth, Yield and Physiological Responses of Forage Maize · 2025 · DOI

  • In comparison to other stressors, there has been limited studies on how waterlogging stress affects plant microbiome structure and their functional traits.

    Uncovering the effect of waterlogging stress on plant microbiome and disease development: current knowledge and future perspectives · 2024 · DOI

  • However, it remains to be determined whether this modulation has a positive or negative effect on the overall plant metabolism.

    Stress response in tomato as influenced by repeated waterlogging · 2024 · DOI

  • However, the allocation of these nutrients among different plant organs and the underlying drivers in dynamic riparian ecosystems remain inadequately understood.

    Patterns and drivers of plant carbon, nitrogen, and phosphorus stoichiometry in a novel riparian ecosystem · 2024 · DOI

Most-cited papers in Plant responses to water stress

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100 open questions have been extracted from the limitations and future-work passages of 368 Plant responses to water stress papers in our 4.5M-paper local 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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