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Synergizing Bacillus halotolerans, Pseudomonas sihuiensis and Bacillus atrophaeus with folic acid for enhanced drought resistance in wheat by metabolites and antioxidants.

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  • Additional Information
    • Source:
      Publisher: BioMed Central Country of Publication: England NLM ID: 100967807 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2229 (Electronic) Linking ISSN: 14712229 NLM ISO Abbreviation: BMC Plant Biol Subsets: MEDLINE
    • Publication Information:
      Original Publication: London : BioMed Central, [2001-
    • Subject Terms:
      Triticum*/drug effects ; Triticum*/growth & development ; Triticum*/metabolism ; Triticum*/microbiology ; Triticum*/physiology ; Bacillus*/physiology ; Bacillus*/metabolism ; Folic Acid*/metabolism ; Pseudomonas*/physiology ; Pseudomonas*/metabolism ; Antioxidants*/metabolism ; Droughts*; Siderophores/metabolism ; Drought Resistance ; Polyethylene Glycols
    • Abstract:
      Drought stress imposes a serious challenge to cultivate wheat, restricting its growth. Drought reduces the capability of plant to uptake essential nutrients. This causes stunted growth, development and yield. Traditional ways to increase wheat growth under drought stress have shortcomings. Using plant-growth-promoting rhizobacteria (PGPR) has proved feasible and eco-friendly way to enhance wheat growth even under the drought stress. Combining PGPR in consortiums further boosts up their effects. In this study, we have checked the efficacy of drought-tolerant Bacillus halotolerans, Pseudomonas sihuiensis and Bacillus atrophaeus in combination. These strains were allowed to grow on PEG 6000 with concentrations (-0.15, -0.49, -0.73 and - 1.2) Mega Pascal (MPa) alone and in combination. Furthermore, Fourier transmission infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) were used. Their biochemical traits such as solubilization of K, P and Zn and the synthesis of siderophore, indole acetic acid (IAA), protease, amylase, hydrogen cyanide (HCN) and 1-aminocyclopropane-1-carboxylate (ACC) deaminase were done. In addition to this, we investigated the optimum folic acid concentration i.e 150 ppm for wheat against drought stress. We conducted a pot experiment to check the growth-enhancing and drought-mitigating effects of consortium and folic acid alone and in combination. As a result, we found a significantly increased wheat biomass, relative water content (RWC), chlorophyll content, antioxidants including glutathione reductase and total soluble sugars and protein content under all treatments. However, the combined treatment of bacterial consortium and folic acid showed maximum potential to boost wheat growth and survival even under drought. We also investigated the minerals uptake by wheat after the treatments and found maximum nutrient uptake under the co-effect of folic acid and bacterial consortium We believe this is the first study that has investigated the optimal dose of folic acid for wheat. Our research is also novel in that we seek to investigate the effects of folic acid along with a bacterial consortium comprising Bacillus halotolerans, Pseudomonas sihuiensis and Bacillus atrophaeus on wheat grown under the drought stress.
      (© 2024. The Author(s).)
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    • Contributed Indexing:
      Keywords: Drought stress; Folic acid; Plant growth promoting rhizobacteria; Wheat growth enhancement
    • Accession Number:
      935E97BOY8 (Folic Acid)
      0 (Antioxidants)
      0 (Siderophores)
      30IQX730WE (Polyethylene Glycol 6000)
      3WJQ0SDW1A (Polyethylene Glycols)
    • Subject Terms:
      Bacillus atrophaeus
    • Publication Date:
      Date Created: 20241025 Date Completed: 20241025 Latest Revision: 20241030
    • Publication Date:
      20250114
    • Accession Number:
      PMC11515351
    • Accession Number:
      10.1186/s12870-024-05609-0
    • Accession Number:
      39448898