Role of Jasmonic and Salicylic Acid Signaling in Plants Under UV-B Stress

Choudhary, Krishna Kumar; Singh, Sarita; Agrawal, Madhoolika; Agrawal, Shashi Bhushan

doi:10.1007/978-3-030-75805-9_3

Cited by 9 publications

(5 citation statements)

References 105 publications

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“…In abiotic stress, jasmonic acid (JA) includes several plant reactions such as gene regulation, synthesis of particular proteins, and secondary metabolism. JA regulates the detrimental effects of environmental stress through a cascade of plant responses ( Choudhary and Agrawal, 2014a , b ; Choudhary et al, 2021 ). For example, JA increased the levels of non-enzymatic antioxidants such as proline, which has been reported in several studies ( Anjum et al, 2011 ; Shan et al, 2015 ).…”

Section: Phytohormone Signaling Mediates Osmoprotectants Biosynthesis...mentioning

confidence: 99%

“…Salicylic acid (SA), as a vital phytohormone, has multifaceted role in plant growth and developmental processes such as photosynthesis, mineral ion absorption and assimilation, antioxidant, and tolerance to stress ( Choudhary and Agrawal, 2014a , b ; Moravcová et al, 2018 ; Choudhary et al, 2021 ). The importance of SA in increasing resilience to environmental challenges has been well documented ( Ahmad et al, 2011 ; Khan et al, 2015 ).…”

Section: Phytohormone Signaling Mediates Osmoprotectants Biosynthesis...mentioning

confidence: 99%

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Salt stress resilience in plants mediated through osmolyte accumulation and its crosstalk mechanism with phytohormones

et al. 2022

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Salinity stress is one of the significant abiotic stresses that influence critical metabolic processes in the plant. Salinity stress limits plant growth and development by adversely affecting various physiological and biochemical processes. Enhanced generation of reactive oxygen species (ROS) induced via salinity stress subsequently alters macromolecules such as lipids, proteins, and nucleic acids, and thus constrains crop productivity. Due to which, a decreasing trend in cultivable land and a rising world population raises a question of global food security. In response to salt stress signals, plants adapt defensive mechanisms by orchestrating the synthesis, signaling, and regulation of various osmolytes and phytohormones. Under salinity stress, osmolytes have been investigated to stabilize the osmotic differences between the surrounding of cells and cytosol. They also help in the regulation of protein folding to facilitate protein functioning and stress signaling. Phytohormones play critical roles in eliciting a salinity stress adaptation response in plants. These responses enable the plants to acclimatize to adverse soil conditions. Phytohormones and osmolytes are helpful in minimizing salinity stress-related detrimental effects on plants. These phytohormones modulate the level of osmolytes through alteration in the gene expression pattern of key biosynthetic enzymes and antioxidative enzymes along with their role as signaling molecules. Thus, it becomes vital to understand the roles of these phytohormones on osmolyte accumulation and regulation to conclude the adaptive roles played by plants to avoid salinity stress.

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Section: Phytohormone Signaling Mediates Osmoprotectants Biosynthesis...mentioning

confidence: 99%

Section: Phytohormone Signaling Mediates Osmoprotectants Biosynthesis...mentioning

confidence: 99%

Salt stress resilience in plants mediated through osmolyte accumulation and its crosstalk mechanism with phytohormones

et al. 2022

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“…Ahmad et al [ 68 ] proposed that GA 3 reduced Na + toxicity in salt-stressed Pisum sativum by upregulating Na + /H + antiporter genes, leading to the activation of SOS1 and NHX1 , which help maintain ion concentrations in the cytosol and enhance salt tolerance. Choudhary et al [ 69 ] suggested that GA3 may interact with the salt overly sensitive pathway through the Ca 2+ signaling pathway, which mediates plant responses to salt stress. Shukry and El-Bassiouny [ 70 ] hypothesized that the reduced Na + accumulation and increased K + ions observed in Vicia faba under salt stress were associated with the synergistic effect of gibberellic acid on the activation of salt-responsive proteins, such as osmotin, dehydrin, and ubiquitin, essential for optimal growth.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have highlighted the connections and crosstalk between the SA signaling pathway, redox homeostasis, osmolytes (such as proline and sugars), and antioxidant systems under abiotic stresses, including salinity [ 86 , 87 ]. For example, SA seed priming in peas ( Pisum sativum ) increased antioxidant defense systems and improved the accumulation of osmotic regulators, including soluble sugars and proline [ 69 ]. The protective role of SA has been associated with the regulation of ROS and antioxidants [ 88 , 89 ].…”

Section: Discussionmentioning

confidence: 99%

Seed Priming with Salicylic Acid Alleviates Salt Stress Toxicity in Barley by Suppressing ROS Accumulation and Improving Antioxidant Defense Systems, Compared to Halo- and Gibberellin Priming

Ellouzi,

Zorrig,

Amraoui

et al. 2023

Antioxidants

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Plants are highly sensitive to various environmental stresses, which can hinder their growth and reduce yields. In this study, we investigated the potential of seed priming with salicylic acid (SA), gibberellic acid (GA3), and sodium chloride (NaCl) to mitigate the adverse effects of salinity stress in Hordeum vulgare at the germination and early seedling stages. Exposing H. vulgare seeds to salt stress reduced the final germination percentage and seedling shoot and root growth. Interestingly, all seed treatments significantly improved salt-induced responses, with GA3 being more effective in terms of germination performance, plant growth, and photosynthesis. SA priming exhibited promising effects on antioxidant defense mechanisms, proline, sugar, and ascorbic acid production. Notably, SA priming also suppressed reactive oxygen species accumulation and prevented lipid peroxidation. These findings highlight the ability of SA to manage crosstalk within the seed, coordinating many regulatory processes to support plant adaptation to salinity stress.

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“…JA is involved in plants defense against various abiotic stresses like salinity, drought, temperature, heavy metals, and flood by synthesizing various osmoprotectants like GB and better antioxidative defense mechanisms [149]. The coordination of JA and SA has been observed in plants' defense against UV-B stress [150]. Exogenous JA induced antioxidative enzymes and reduced oxidative stress in maize plants under drought stress [151].…”

Section: Jasmonic Acidmentioning

confidence: 99%

Glycine Betaine

Singh

Choudhary

2022

J. Pharm. Nutr. Sci.

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Abiotic stresses like temperature, water, salinity, ultraviolet (UV) radiations, heavy metals, etc., affect plants’ growth and yield. Despite these constraints, plants produce a variety of metabolites to maintain their survival. Primary metabolites, produced through crucial metabolic processes, are essential for plants survival. Additionally, secondary metabolites (SMs) are synthesized from primary metabolites and are mainly used as a defensive mechanism and a means of interacting with unfavorable environmental conditions. In addition to their defensive function in plants, SMs are significant in the pharmaceutical industry. Glycine betaine (GB) is a quaternary ammonium compound that belongs to a class of SMs, present in plants, animals, and microbes. It functions as a compatible solute and reflects potential bioactivity against various abiotic stresses like salinity, water, heat, heavy metals, UV radiations, etc. Due to high solubility and low viscosity, its accumulation is commonly observed in chloroplasts and plastids. The accumulation level generally depends on plant species, growth stage, exposure duration, and stress's nature. GB reduces oxidative stress and prevents the damaging of photosystems and other biomolecules under stressful conditions. It is important for maintaining the water potential and osmotic pressure of cells and hence functions as a potent osmolyte under salinity stress. Excessive production of ROS during temperature stress is responsible for damage to oxygen-evolving complexes, electron transport chains, and photosystems. In order to protect plants from these damages, GB activates the genes responsible for synthesizing heat shock proteins, glycoproteins, and antioxidants via various signaling pathways. GB alleviates the effect of water stress by maintaining the function of rubisco and calcium ion ATPase activity via crosstalk with Abscisic acid (ABA) and ethylene. GB supports the proper functioning of the ascorbate-glutathione cycle, superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase (antioxidative enzymes) to overcome various stresses. Phytohormones like salicylic acid (SA), jasmonic acid (JA), ABA, ethylene, and polyamines (PAS) coordinate well with GB via different signaling pathways to ensure plant protection under various abiotic stresses. The potential bioactivity of GB against various abiotic stresses in plants has been summarized in this review.

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Role of Jasmonic and Salicylic Acid Signaling in Plants Under UV-B Stress

Cited by 9 publications

References 105 publications

Salt stress resilience in plants mediated through osmolyte accumulation and its crosstalk mechanism with phytohormones

Salt stress resilience in plants mediated through osmolyte accumulation and its crosstalk mechanism with phytohormones

Seed Priming with Salicylic Acid Alleviates Salt Stress Toxicity in Barley by Suppressing ROS Accumulation and Improving Antioxidant Defense Systems, Compared to Halo- and Gibberellin Priming

Glycine Betaine

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