Does Seed Priming Play a Role in Regulating Reactive Oxygen Species Under Saline Conditions?

Mansour, Mohamed Magdy F.; Ali, Esmat F.; Salama, Karima H. A.

doi:10.1002/9781119468677.ch18

Cited by 18 publications

(15 citation statements)

References 159 publications

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“…Drought stress causes induction of ROS generation, which triggers oxidative damage of cellular macromolecules such as proteins, nucleic acids, and membranes (Mansour et al, 2019). Our results showed significant increase in lipid peroxidation along with lower antioxidant capacity (lower DPPH value) in drought-stressed sunflower plants, suggestive of drought-induced oxidative stress that triggers impaired metabolism and growth inhibition (Uddin et al, 2016a;Uddin et al, 2016b).…”

Section: Discussionsupporting

confidence: 49%

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Ismail

Younis

2021

Egyptian Academic Journal of Biological Sciences, H. Botany

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Water scarcity and demand for both fresh water and agriculture have overgrown in the last decades, as more than two-thirds of the fresh water in the world are consumed in agriculture (FAO, 2017). About 96% of Egypt's are deserts, leaving only 4% of cultivated lands that are threatened by urbanism and stresses especially drought (Gad, 2020). The frequency and severity of drought events, especially in the Mediterranean basin, have been predicted to increase shortly (Tramblay et al., 2020). Drought has great impacts on the growth, physiology, and biochemistry of several plant species (Jafari et al., 2019), and its effects are expected to exaggerate as global temperature increases. It has been reported that drought stress can directly cause a wide range of injury symptoms in plants, such as limited

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Section: Discussionsupporting

confidence: 49%

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Ismail

Younis

2021

Egyptian Academic Journal of Biological Sciences, H. Botany

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“…In this study the photosynthetic apparatus was not affected with allelochemical priming, but rather photosynthesis was enhanced with SWE. Salinity-induced oxidative stress results in the excessive production of ROS ( Figure 4 A,B), which impairs the cellular functions by carrying out oxidative reactions with different biomolecules such as proteins, nucleic acid, and lipids, as well as inactivate enzymatic activities, and eventually leads to cell death [ 67 ]. Despite this, the seed priming treatments, HP and SWE, ameliorate salt-induced toxicity by scavenging ROS such as hydrogen peroxide to noninjurious level and control of MDA synthesis.…”

Section: Discussionmentioning

confidence: 99%

“…Tahira et al [ 64 ] observed a negative correlation of priming treatments with MDA production. The evidence revealed that one important aspect of seed priming, which lasts and remains on the plant after emergence, is the induction of nonenzymatic and enzymatic antioxidants, which helps plants to reduce the production of ROS, and to adapt under environmental cues [ 67 ]. In the current study, irrespective to salinity treatments, increased activities of CAT, POD and SOD were observed under priming treatments compared to unprimed plants ( Figure 5 A–C).…”

Section: Discussionmentioning

confidence: 99%

Seed Priming with Sorghum Water Extract Improves the Performance of Camelina (Camelina sativa (L.) Crantz.) under Salt Stress

Huang

Abbas

et al. 2021

Plants

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Seed priming with sorghum water extract (SWE) enhances crop tolerance to salinity stress; however, the application of SWE under salinity for camelina crop has not been documented so far. This study evaluated the potential role of seed priming with SWE in improving salt stress tolerance in camelina. Primed (with 5% SWE and distilled water-hydropriming) and nonprimed seeds were sown under control (no salt) and salt stress (10 dS m−1) conditions. Salinity reduced camelina’s emergence and growth, while seed priming with SWE improved growth under control and stress conditions. Under salt stress, seed priming with SWE enhanced emergence percentage (96.98%), increased root length (82%), shoot length (32%), root dry weight (75%), shoot dry weight (33%), α-amylase activity (66.43%), chlorophyll content (60–92%), antioxidant enzymes activity (38–171%) and shoot K+ ion (60%) compared with nontreated plants. Similarly, under stress conditions, hydrogen peroxide, malondialdehyde (MDA) content, and shoot Na+ ion were reduced by 60, 31, and 40% by seed priming with SWE, respectively, over the nonprimed seeds. Therefore, seed priming with SWE may be used to enhance the tolerance against salt stress in camelina.

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“…Complex interplay between salt priming, salt stress, plant physiology and gene expression enable tolerant upland cotton genotypes to perform better under salt stress. Salt priming affects several key aspects of plant physiology, including signal perception and transduction, homeostasis, and the biosynthesis of enzymes such as catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD) (Zulfiqar et al, 2022; Mansour et al, 2019). These enzymes play important roles in protecting plants from oxidative stress.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic analysis reveals the beneficial effects of salt priming on enhancing defense responses in upland cotton under successive salt stress

Nazir,

Chen,

Umer

et al. 2023

Physiologia Plantarum

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Priming‐mediated stress tolerance in plants stimulates defense mechanisms and enables plants to cope with future stresses. Seed priming has been proven effective for tolerance against abiotic stresses; however, underlying genetic mechanisms are still unknown. We aimed to assess upland cotton genotypes and their transcriptional behaviors under salt priming and successive induced salt stress. We pre‐selected 16 genotypes based on previous studies and performed morpho‐physiological characterization, from which we selected three genotypes, representing different tolerance levels, for transcriptomic analysis. We subjected these genotypes to four different treatments: salt priming (P0), salt priming with salinity dose at 3‐true‐leaf stage (PD), salinity dose at 3‐true‐leaf stage without salt priming (0D), and control (CK). Although the three genotypes displayed distinct expression patterns, we identified common differentially expressed genes (DEGs) under PD enriched in pathways related to transferase activity, terpene synthase activity, lipid biosynthesis, and regulation of acquired resistance, indicating the beneficial role of salt priming in enhancing salt stress resistance. Moreover, the number of unique DEGs associated with G. hirsutum purpurascens was significantly higher compared to other genotypes. Coexpression network analysis identified 16 hub genes involved in cell wall biogenesis, glucan metabolic processes, and ribosomal RNA binding. Functional characterization of XTH6 (XYLOGLUCAN ENDOTRANSGLUCOSYLASE/HYDROLASE) using virus‐induced gene silencing revealed that suppressing its expression improves plant growth under salt stress. Overall, findings provide insights into the regulation of candidate genes in response to salt stress and the beneficial effects of salt priming on enhancing defense responses in upland cotton.

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Does Seed Priming Play a Role in Regulating Reactive Oxygen Species Under Saline Conditions?

Cited by 18 publications

References 159 publications

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Seed Priming with Sorghum Water Extract Improves the Performance of Camelina (Camelina sativa (L.) Crantz.) under Salt Stress

Transcriptomic analysis reveals the beneficial effects of salt priming on enhancing defense responses in upland cotton under successive salt stress

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