Hormonal crosstalk in regulating salinity stress tolerance in graminaceous crops

Choudhary, Pooja; Pramitha, J. Lydia; Rana, Sumi; Verma, Shubham; Aggarwal, Pooja; Muthamilarasan, Mehanathan

doi:10.1111/ppl.13558

Cited by 28 publications

(13 citation statements)

References 56 publications

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“…We found using the PaLD method that several groups were highly enriched in transcripts involved in auxin, ethylene and abscisic acid signaling. This suggests that multiple hormone-induced signaling pathways are activated in response to salt stress, consistent with hormone crosstalk central to salt stress responses, an idea supported by other experimental results [28–30]. The PaLD approach provides three-dimensional network models that are rich and informative spatial representations of the relationships among temporally-linked transcripts.…”

Section: Discussionsupporting

confidence: 75%

Partitioned Local Depth analysis of time course transcriptomic data reveals elaborate community structure

Khoury

Berenhaut

Moore

et al. 2022

Preprint

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Transcriptome studies which provide temporal information can be valuable for identifying groups of similarly-behaving transcripts and provide insight into overarching gene regulatory networks. Nevertheless, inferring meaningful biological conclusions is challenging, in part because it is difficult to holistically consider both local relationships and global structure of these complex and overlapping transcriptional responses. To address this need, we employed the recently-developed method, Partitioned Local Depth (PaLD), which reveals community structure in large data sets, to examine four time-course transcriptomic data sets generated using the model plant Arabidopsis thaliana. As this is the first paper in systems biology to implement the PaLD approach, we provide a self-contained description of the method and show how it can be used to make predictions about gene regulatory networks based on temporal responses of transcripts. The analysis provides a global network representation of the data from which graph partitioning methods and neighborhood analysis can reveal smaller, more well-defined groups of like-responding transcripts. These groups of transcripts that change in response to hormone treatment (auxin and ethylene) and salt treatment were shown to be enriched in common biological function and/or binding of transcription factors that were not identified with prior analyses of this data using other clustering methods. These results reveal the potential of PaLD to predict gene regulatory networks within large transcriptomic data sets.

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Section: Discussionsupporting

confidence: 75%

Partitioned Local Depth analysis of time course transcriptomic data reveals elaborate community structure

Khoury

Berenhaut

Moore

et al. 2022

Preprint

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“…In growth-retarded plants GA-and deficient mutants, GA treatment corrected dwarf growth and stress tolerance responses [202]. Plastid, endoplasmic reticulum (ER), and cytoplasm are involved in gas generation, with trans-geranylgeranyl diphosphate being the starting point in the chloroplast [203]. The overwhelming evidence implies that dioxygenases control GAs synthesis and that GA2ox genes in plants are primarily vulnerable to abiotic stress.…”

Section: Gibberellinsmentioning

confidence: 99%

Plants’ Physio-Biochemical and Phyto-Hormonal Responses to Alleviate the Adverse Effects of Drought Stress: A Comprehensive Review

Wahab

Abdi

Saleem

et al. 2022

Plants

246

103

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Water, a necessary component of cell protoplasm, plays an essential role in supporting life on Earth; nevertheless, extreme changes in climatic conditions limit water availability, causing numerous issues, such as the current water-scarce regimes in many regions of the biome. This review aims to collect data from various published studies in the literature to understand and critically analyze plants’ morphological, growth, yield, and physio-biochemical responses to drought stress and their potential to modulate and nullify the damaging effects of drought stress via activating natural physiological and biochemical mechanisms. In addition, the review described current breakthroughs in understanding how plant hormones influence drought stress responses and phytohormonal interaction through signaling under water stress regimes. The information for this review was systematically gathered from different global search engines and the scientific literature databases Science Direct, including Google Scholar, Web of Science, related studies, published books, and articles. Drought stress is a significant obstacle to meeting food demand for the world’s constantly growing population. Plants cope with stress regimes through changes to cellular osmotic potential, water potential, and activation of natural defense systems in the form of antioxidant enzymes and accumulation of osmolytes including proteins, proline, glycine betaine, phenolic compounds, and soluble sugars. Phytohormones modulate developmental processes and signaling networks, which aid in acclimating plants to biotic and abiotic challenges and, consequently, their survival. Significant progress has been made for jasmonates, salicylic acid, and ethylene in identifying important components and understanding their roles in plant responses to abiotic stress. Other plant hormones, such as abscisic acid, auxin, gibberellic acid, brassinosteroids, and peptide hormones, have been linked to plant defense signaling pathways in various ways.

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“…Plants have evolved multiple strategies for integrating exogenous salt stress signals into responses that balance growth with salt tolerance. These signals are communicated systemically through the action of different hormones, which play an important role in regulating stress responses and tolerance [ 22 ]. Auxin-related genes constitute the largest component of the plant hormone signal transduction pathway.…”

Section: Resultsmentioning

confidence: 99%

Insights into Adaptive Regulation of the Leaf-Petiole System: Strategies for Survival of Water Lily Plants under Salt Stress

Liu

Chen

et al. 2023

IJMS

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The water lily (Nymphaea tetragona) is an ancient angiosperm that belongs to the Nymphaeaceae family. As a rooted floating-leaf plant, water lilies are generally cultivated in fresh water, therefore, little is known about their survival strategies under salt stress. Long-term salt stress causes morphological changes, such as the rapid regeneration of floating leaves and a significant decrease in leaf number and surface area. We demonstrate that salt stress induces toxicity soon after treatment, but plants can adapt by regenerating floating leaves that are photosynthetically active. Transcriptome profiling revealed that ion binding was one of the most-enriched GO terms in leaf-petiole systems under salt stress. Sodium-transporter-related genes were downregulated, whereas K+ transporter genes were both up- and downregulated. These results suggest that restricting intracellular Na+ importing while maintaining balanced K+ homeostasis is an adaptive strategy for tolerating long-term salt stress. ICP-MS analysis identified the petioles and leaves as Na-hyperaccumulators, with a maximum content of over 80 g kg−1 DW under salt stress. Mapping of the Na-hyperaccumulation trait onto the phylogenetic relationships revealed that water lily plants might have a long evolutionary history from ancient marine plants, or may have undergone historical ecological events from salt to fresh water. Ammonium transporter genes involved in nitrogen metabolism were downregulated, whereas NO3−-related transporters were upregulated in both the leaves and petioles, suggesting a selective bias toward NO3− uptake under salt stress. The morphological changes we observed may be due to the reduced expression of genes related to auxin signal transduction. In conclusion, the floating leaves and submerged petioles of the water lily use a series of adaptive strategies to survive salt stress. These include the absorption and transport of ions and nutrients from the surrounding environments, and the ability to hyperaccumulate Na+. These adaptations may serve as the physiological basis for salt tolerance in water lily plants.

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Hormonal crosstalk in regulating salinity stress tolerance in graminaceous crops

Cited by 28 publications

References 56 publications

Partitioned Local Depth analysis of time course transcriptomic data reveals elaborate community structure

Partitioned Local Depth analysis of time course transcriptomic data reveals elaborate community structure

Plants’ Physio-Biochemical and Phyto-Hormonal Responses to Alleviate the Adverse Effects of Drought Stress: A Comprehensive Review

Insights into Adaptive Regulation of the Leaf-Petiole System: Strategies for Survival of Water Lily Plants under Salt Stress

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