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<p>Salinity stress significantly hampers plant growth and nutritional quality, posing a significant challenge to sustainable agriculture. Main objectives of current study were to investigate the role of <i>Bacillus pseudomycoides</i> in enhancing the nutritional profile, essential amino acid content, activation of antioxidant enzymes, mineral ions, phenolic and flavonoid contents, and estimation of stress markers across five cultivars of <i>Vigna radiata</i> (L.) under sodium chloride (NaCl) stress. This study evaluated the efficacy of <i>B. pseudomycoides</i> in mitigating the adverse effects of salt stress and improving the nutrient accumulation and stress resilience mechanisms in different plant parts, thereby contributing to sustainable agriculture in saline regions. Five cultivars of <i>Vigna radiata</i> (Sona mung, NIFA-17, NIFA-19, Ramzan mung, and Inqelab mung) were used. Twelve treatments were applied with salt concentrations from 3 dSm⁻¹ to 15 dSm⁻¹ with and without <i>B. pseudomycoides</i> inoculum and compared with control lacking the application of NaCl as well as <i>B. pseudomycoides</i> inoculum. The essential nutrients (i.e., protein, carbohydrate, and soluble sugar), amino acids (i.e., histidine, isoleucine, valine, and phenylalanine), mineral ion contents i.e. nitrogen, phosphorous, potassium (NPK), phenolic and flavonoid compounds, and antioxidant enzyme i.e. Ascorbate peroxidase (APX) Superoxide dismutase (SOD), Catalase (CAT) activities were estimated in the seeds, shoots, and roots of all cultivars. Data were statistically analyzed using analysis of variance (ANOVA) to determine the significance levels among the treatments. Salt stress significantly decreased all nutrients, that is, protein, carbohydrate, soluble sugar, amino acids (histidine, isoleucine, valine, and phenylalanine), mineral ion content (NPK), and phenolic and flavonoid compounds, whereas inoculation with <i>B. pseudomycoides</i> alleviated the effect of salt stress on the measured attributes. The antioxidant enzyme activities (APX, SOD, and CAT) were found to be significantly higher in plants under salt stress than under the combined application of salt and <i>B. pseudomycoides</i> to stimulate the defense system against stress. Among all cultivars, Inqelab mung showed the highest resistance, whereas Ramzan mung showed the lowest resistance. Application of <i>B. pseudomycoides</i> effectively alleviated the detrimental effects of NaCl stress in five studied cultivars of <i>Vigna radiata</i>, leading to improved nutritional profiles. This suggests that <i>B. pseudomycoides</i> has significant potential as a bio inoculant for promoting nutritional quality of <i>Vigna radiata</i> in the saline soils.</p>

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Role of Bacillus pseudomycoides in Enhancing the Nutritional Profile of Five Vigna radiata (L.) Cultivars Under Saline Stress

  • 期刊论文

  • 发表日期：

    2025年7月15日

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  • Bushra Bilal,
  • Zafar Siddiq,
  • Tehreema Iftikhar,
  • Muhammad Umar Hayyat,
  • Hammad Majeed

摘要

Salinity stress significantly hampers plant growth and nutritional quality, posing a significant challenge to sustainable agriculture. Main objectives of current study were to investigate the role of Bacillus pseudomycoides in enhancing the nutritional profile, essential amino acid content, activation of antioxidant enzymes, mineral ions, phenolic and flavonoid contents, and estimation of stress markers across five cultivars of Vigna radiata (L.) under sodium chloride (NaCl) stress. This study evaluated the efficacy of B. pseudomycoides in mitigating the adverse effects of salt stress and improving the nutrient accumulation and stress resilience mechanisms in different plant parts, thereby contributing to sustainable agriculture in saline regions. Five cultivars of Vigna radiata (Sona mung, NIFA-17, NIFA-19, Ramzan mung, and Inqelab mung) were used. Twelve treatments were applied with salt concentrations from 3 dSm⁻¹ to 15 dSm⁻¹ with and without B. pseudomycoides inoculum and compared with control lacking the application of NaCl as well as B. pseudomycoides inoculum. The essential nutrients (i.e., protein, carbohydrate, and soluble sugar), amino acids (i.e., histidine, isoleucine, valine, and phenylalanine), mineral ion contents i.e. nitrogen, phosphorous, potassium (NPK), phenolic and flavonoid compounds, and antioxidant enzyme i.e. Ascorbate peroxidase (APX) Superoxide dismutase (SOD), Catalase (CAT) activities were estimated in the seeds, shoots, and roots of all cultivars. Data were statistically analyzed using analysis of variance (ANOVA) to determine the significance levels among the treatments. Salt stress significantly decreased all nutrients, that is, protein, carbohydrate, soluble sugar, amino acids (histidine, isoleucine, valine, and phenylalanine), mineral ion content (NPK), and phenolic and flavonoid compounds, whereas inoculation with B. pseudomycoides alleviated the effect of salt stress on the measured attributes. The antioxidant enzyme activities (APX, SOD, and CAT) were found to be significantly higher in plants under salt stress than under the combined application of salt and B. pseudomycoides to stimulate the defense system against stress. Among all cultivars, Inqelab mung showed the highest resistance, whereas Ramzan mung showed the lowest resistance. Application of B. pseudomycoides effectively alleviated the detrimental effects of NaCl stress in five studied cultivars of Vigna radiata, leading to improved nutritional profiles. This suggests that B. pseudomycoides has significant potential as a bio inoculant for promoting nutritional quality of Vigna radiata in the saline soils.