Enhancing saline stress tolerance in soybean seedlings through optimal NH4+/NO3− ratios: a coordinated regulation of ions, hormones, and antioxidant potential

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorIslamia College Peshawar-
Autor(es): dc.contributorChinese Academy of Sciences-
Autor(es): dc.contributorJiangsu University-
Autor(es): dc.contributorThe University of Agriculture-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorKing Saud University-
Autor(es): dc.contributorUniversity of Antwerp-
Autor(es): dc.contributorAbdul Wali Khan University Mardan-
Autor(es): dc.creatorNoor, Javaria-
Autor(es): dc.creatorAhmad, Izhar-
Autor(es): dc.creatorUllah, Abd-
Autor(es): dc.creatorIqbal, Babar-
Autor(es): dc.creatorAnwar, Shazma-
Autor(es): dc.creatorJalal, Arshad-
Autor(es): dc.creatorOkla, Mohammad K.-
Autor(es): dc.creatorAlaraidh, Ibrahim A.-
Autor(es): dc.creatorAbdelgawad, Hamada-
Autor(es): dc.creatorFahad, Shah-
Data de aceite: dc.date.accessioned2025-08-21T17:12:20Z-
Data de disponibilização: dc.date.available2025-08-21T17:12:20Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1186/s12870-024-05294-z-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298930-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298930-
Descrição: dc.descriptionBackground: Nitrogen (N) availability is crucial in regulating plants’ abiotic stress resistance, particularly at the seedling stage. Nevertheless, plant responses to N under salinity conditions may vary depending on the soil’s NH4+ to NO3− ratio. Methods: In this study, we investigated the effects of different NH4+:NO3− ratios (100/0, 0/100, 25/75, 50/50, and 75/25) on the growth and physio-biochemical responses of soybean seedlings grown under controlled and saline stress conditions (0-, 50-, and 100-mM L− 1 NaCl and Na2SO4, at a 1:1 molar ratio). Results: We observed that shoot length, root length, and leaf-stem-root dry weight decreased significantly with increased saline stress levels compared to control. Moreover, there was a significant accumulation of Na+, Cl−, hydrogen peroxide (H2O2), and malondialdehyde (MDA) but impaired ascorbate-glutathione pools (AsA-GSH). They also displayed lower photosynthetic pigments (chlorophyll-a and chlorophyll-b), K+ ion, K+/Na+ ratio, and weakened O2•−-H2O2-scavenging enzymes such as superoxide dismutase, catalase, peroxidase, monodehydroascorbate reductase, glutathione reductase under both saline stress levels, while reduced ascorbate peroxidase, and dehydroascorbate reductase under 100-mM stress, demonstrating their sensitivity to a saline environment. Moreover, the concentrations of proline, glycine betaine, total phenolic, flavonoids, and abscisic acid increased under both stresses compared to the control. They also exhibited lower indole acetic acid, gibberellic acid, cytokinins, and zeatine riboside, which may account for their reduced biomass. However, NH4+:NO3− ratios caused a differential response to alleviate saline stress toxicity. Soybean seedlings supplemented with optimal ratios of NH4+:NO3− (T3 = 25:75 and T = 4 50:50) displayed lower Na+ and Cl− and ABA but improved K+ and K+/Na+, pigments, growth hormones, and biomass compared to higher NH4+:NO3− ratios. They also exhibited higher O2•−-H2O2-scavenging enzymes and optimized H2O2, MDA, and AsA-GSH pools status in favor of the higher biomass of seedlings. Conclusions: In summary, the NH4+ and NO3− ratios followed the order of 50:50 > 25:75 > 0:100 > 75:25 > 100:0 for regulating the morpho-physio-biochemical responses in seedlings under SS conditions. Accordingly, we suggest that applying optimal ratios of NH4+ and NO3− (25/75 and 50:50) can improve the resistance of soybean seedlings grown in saline conditions.-
Descrição: dc.descriptionDepartment of Botany Islamia College Peshawar, Khyber Pakhtunkhwa-
Descrição: dc.descriptionXinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences-
Descrição: dc.descriptionSchool of Environment and Safety Engineering Jiangsu University-
Descrição: dc.descriptionDepartment of Agronomy Faculty of Crop Production Sciences The University of Agriculture-
Descrição: dc.descriptionSchool of Engineering Department of Plant Health Rural Engineering and Soils São Paulo State University - UNESP-FEIS-
Descrição: dc.descriptionBotany and Microbiology Department College of Science King Saud University-
Descrição: dc.descriptionIntegrated Molecular Plant Physiology Research Department of Biology University of Antwerp-
Descrição: dc.descriptionDepartment of Agronomy Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa-
Descrição: dc.descriptionSchool of Engineering Department of Plant Health Rural Engineering and Soils São Paulo State University - UNESP-FEIS-
Idioma: dc.languageen-
Relação: dc.relationBMC Plant Biology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAbiotic stress-
Palavras-chave: dc.subjectNitrogen form-
Palavras-chave: dc.subjectNutrients management-
Palavras-chave: dc.subjectPhysiological responses-
Palavras-chave: dc.subjectSalinity resistance-
Título: dc.titleEnhancing saline stress tolerance in soybean seedlings through optimal NH4+/NO3− ratios: a coordinated regulation of ions, hormones, and antioxidant potential-
Tipo de arquivo: dc.typelivro digital-
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