Priming with sodium nitroprusside and hydrogen peroxide increases cotton seed tolerance to salinity and water deficit during seed germination and seedling development

Guaraldo, Marília Mendes dos Santos; Pereira, Thalita Maciel; Santos, Heloísa Oliveira dos; Oliveira, Thiago Lucas de; Pereira, Wilson Vicente Souza; Pinho, Édila Vilela de Resende Von

doi:10.1016/j.envexpbot.2023.105294

Cited by 5 publications

(1 citation statement)

References 70 publications

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“…Preliminary reports concerning each priming method suggested significant improvement in seed germination, plant growth, and development under stress conditions (Al‐Humaid, 2002; Zheng, 2002; Ashraf and Foolad, 2005; Fariduddin et al, 2003). Positive effects of seed priming are mainly attributed to metabolic changes triggered through priming prior to sowing, such as nucleic acid synthesis, ATP synthesis, accumulation of phospholipids, and activation of antioxidant mechanisms (Kumar et al, 2022; dos Santos Guaraldo et al; 2023, Narejo et al, 2023; Xia et al, 2023; Khalequzzaman et al, 2023). This early metabolism shift provides a booster effect for plant growth and development under stress conditions.…”

Section: Introductionmentioning

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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Section: Introductionmentioning

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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Signaling Molecules for Increasing Urochloa ruziziensis Tolerance to Abiotic Stresses

do Carmo,

dos Santos,

e Oliveira

et al. 2024

J Soil Sci Plant Nutr

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Transcriptome Analysis Revealed That Hydrogen Peroxide-Regulated Oxidative Phosphorylation Plays an Important Role in the Formation of Pleurotus ostreatus Cap Color

Hou

Yan

Dong

et al. 2023

JoF

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Pleurotus ostreatus is widely cultivated in China. H2O2, as a signaling molecule, can regulate the formation of cap color, but its regulatory pathway is still unclear, severely inhibiting the breeding of dark-colored strains. In this study, 614 DEGs specifically regulated by H2O2 were identified by RNA-seq analysis. GO-enrichment analysis shows that DEGs can be significantly enriched in multiple pathways related to ATP synthesis, mainly including proton-transporting ATP synthesis complex, coupling factor F(o), ATP biosynthetic process, nucleoside triphosphate metabolic processes, ATP metabolic process, purine nucleoside triphosphate biosynthetic and metabolic processes, and purine ribonuclease triphosphate biosynthetic metabolic processes. Further KEGG analysis revealed that 23 DEGs were involved in cap color formation through the oxidative phosphorylation pathway. They were enriched in Complexes I, III, IV, and V in the respiratory chain. Further addition of exogenous uncoupling agents and ATP synthase inhibitors clarifies the important role of ATP synthesis in color formation. In summary, H2O2 may upregulate the expression of complex-encoding genes in the respiratory chain and promote ATP synthesis, thereby affecting the formation of cap color. The results of this study lay the foundation for the breeding of dark-colored strains of P. ostreatus and provide a basis for the color-formation mechanism of edible fungi.

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Priming with sodium nitroprusside and hydrogen peroxide increases cotton seed tolerance to salinity and water deficit during seed germination and seedling development

Cited by 5 publications

References 70 publications

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

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

Signaling Molecules for Increasing Urochloa ruziziensis Tolerance to Abiotic Stresses

Transcriptome Analysis Revealed That Hydrogen Peroxide-Regulated Oxidative Phosphorylation Plays an Important Role in the Formation of Pleurotus ostreatus Cap Color

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