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<p>Plant growth-promoting microorganisms (PGPMs) have garnered increasing attention as sustainable alternatives to chemical fertilizers, owing to their potential to enhance crop productivity while preserving soil and environmental health. This study aimed to evaluate the effects of multi-trait PGPMs, <i>Candida tropicalis</i> (PY1), <i>Actinomucor elegans</i> (PT1), and <i>Delftia lacustris</i> (IS5) on soil health, plant growth, grain yield, and nutritional quality of two durum wheat cultivars, Tejas and Poshan. A field experiment was conducted using a split-plot design, with cultivars allocated to main plots and seven microbial inoculation treatments assigned to subplots. Results demonstrated that dual inoculation with PY1 + IS5 significantly improved rhizosphere soil properties, nutrient availability (in both soil and grain), and crop growth parameters in both cultivars. This treatment resulted in an 18.3% increase in grain yield in Poshan and a 17.1% increase in Tejas compared to the uninoculated control. Moreover, seed inoculation with PY1 + IS5 enhanced the crude protein content and substantially reduced the phytic acid-to-Zn and Fe molar ratios in both cultivars, indicating improved grain nutritional quality. Principal component analysis (PCA) revealed that the PY1 + IS5 treatment in Poshan and PY1 + PT1 in Tejas were most effective in improving rhizosphere soil health, nutrient dynamics, chlorophyll content, yield, and grain quality attributes. Cluster analysis further corroborated that PY1 + IS5 inoculation consistently improved crop performance and nutritional outcomes by enhancing rhizosphere conditions and nutrient accumulation in both soil and grain. These findings suggest that the PY1 + IS5 consortium holds considerable promise as a biofertilizer strategy for improving durum wheat productivity and grain quality. This approach provides a viable alternative to chemical fertilizers, promoting sustainable agriculture through enhanced soil fertility and reduced environmental impact.</p>

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Multi-trait plant growth-promoting microorganisms improve growth, nutrient mobilization, and yield in durum wheat

  • 期刊论文

  • 发表日期：

    2026年1月23日

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  • Baishali Roy,
  • Raghavendra Nargund,
  • Aketi Ramesh,
  • Rakesh Kumar Verma,
  • Mahaveer Prasad Sharma,
  • Hemant Singh Maheshwari,
  • Anand Nighojkar

摘要

Plant growth-promoting microorganisms (PGPMs) have garnered increasing attention as sustainable alternatives to chemical fertilizers, owing to their potential to enhance crop productivity while preserving soil and environmental health. This study aimed to evaluate the effects of multi-trait PGPMs, Candida tropicalis (PY1), Actinomucor elegans (PT1), and Delftia lacustris (IS5) on soil health, plant growth, grain yield, and nutritional quality of two durum wheat cultivars, Tejas and Poshan. A field experiment was conducted using a split-plot design, with cultivars allocated to main plots and seven microbial inoculation treatments assigned to subplots. Results demonstrated that dual inoculation with PY1 + IS5 significantly improved rhizosphere soil properties, nutrient availability (in both soil and grain), and crop growth parameters in both cultivars. This treatment resulted in an 18.3% increase in grain yield in Poshan and a 17.1% increase in Tejas compared to the uninoculated control. Moreover, seed inoculation with PY1 + IS5 enhanced the crude protein content and substantially reduced the phytic acid-to-Zn and Fe molar ratios in both cultivars, indicating improved grain nutritional quality. Principal component analysis (PCA) revealed that the PY1 + IS5 treatment in Poshan and PY1 + PT1 in Tejas were most effective in improving rhizosphere soil health, nutrient dynamics, chlorophyll content, yield, and grain quality attributes. Cluster analysis further corroborated that PY1 + IS5 inoculation consistently improved crop performance and nutritional outcomes by enhancing rhizosphere conditions and nutrient accumulation in both soil and grain. These findings suggest that the PY1 + IS5 consortium holds considerable promise as a biofertilizer strategy for improving durum wheat productivity and grain quality. This approach provides a viable alternative to chemical fertilizers, promoting sustainable agriculture through enhanced soil fertility and reduced environmental impact.