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<p>Waste dumpsite surrounding areas often require restoration of contaminated soil using sustainable and biological approaches like microbe assisted phytoremediation or bioremediation. The present study focussed on initiation steps towards restoration of contaminated soil (waste dumpsite soil) using microbial isolate and commercial plant (bamboo). The eco-responsive growth potential of known commercial plant viz; Male Bamboo <i>(Dendrocalamus strictus</i> (Roxb.) Nees) and their seedlings survival were enhanced in waste dumpsite soil in presence of plant growth promoting bacteria viz; <i>Pseudomonas aeruginosa</i> PB_AQ27, isolated from rhizospheric soil near municipal solid waste dumpsite. The isolated strain exhibited multiple plant growth promoting properties, like solubilization of phosphate, nitrogen, potassium, zinc and ACC deamination. Genome sequencing of PB_AQ27 revealed presence of genes associated with plant growth promotion (<i>fepBCDG, cirA, trpABCDF, acdS, pho, phn, pst, gln, nar, nor, nos,</i> and <i>nir</i>) and also heavy metal tolerance (<i>corA, czcABCDS, znt, znuABC, iscX-fdx-hscAB-iscAUR</i>). Experiments demonstrated that dehusked seeds of male bamboo, when bioprimed with the PB_AQ27 for 8&#xa0;h, allowed 90% ± 1.53 germination of seedlings in a mixture of soil (50% Waste Dumpsite Soil -WDS and 50% Natural Garden Soil -NGS) observed up to 22&#xa0;days. Seeds primed with PB_AQ27 significantly enhanced (<i>p</i> ≤ 0.05) germination, seedlings growth and soil microbial enzymatic characteristics, which were statistically validated using one-way ANOVA and Tukey’s HSD test. Also, correlationship of germination and growth parameters were carried out, which showed high positivity in bioprimed seeds than hydroprimed seeds in contaminated soils, underscoring the eco-responsive efficacy of PB_AQ27 for restoration of stressed environment.</p>

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Eco-Responsive Potential of Male Bamboo Seedlings Bio Primed with Pseudomonas aeruginosa PB_AQ27 Isolate in Waste Dumpsite Soil

  • 期刊论文

  • 发表日期：

    2026年2月21日

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  • Poonam Bhanse,
  • Lal Singh,
  • Asifa Qureshi

摘要

Waste dumpsite surrounding areas often require restoration of contaminated soil using sustainable and biological approaches like microbe assisted phytoremediation or bioremediation. The present study focussed on initiation steps towards restoration of contaminated soil (waste dumpsite soil) using microbial isolate and commercial plant (bamboo). The eco-responsive growth potential of known commercial plant viz; Male Bamboo (Dendrocalamus strictus (Roxb.) Nees) and their seedlings survival were enhanced in waste dumpsite soil in presence of plant growth promoting bacteria viz; Pseudomonas aeruginosa PB_AQ27, isolated from rhizospheric soil near municipal solid waste dumpsite. The isolated strain exhibited multiple plant growth promoting properties, like solubilization of phosphate, nitrogen, potassium, zinc and ACC deamination. Genome sequencing of PB_AQ27 revealed presence of genes associated with plant growth promotion (fepBCDG, cirA, trpABCDF, acdS, pho, phn, pst, gln, nar, nor, nos, and nir) and also heavy metal tolerance (corA, czcABCDS, znt, znuABC, iscX-fdx-hscAB-iscAUR). Experiments demonstrated that dehusked seeds of male bamboo, when bioprimed with the PB_AQ27 for 8 h, allowed 90% ± 1.53 germination of seedlings in a mixture of soil (50% Waste Dumpsite Soil -WDS and 50% Natural Garden Soil -NGS) observed up to 22 days. Seeds primed with PB_AQ27 significantly enhanced (p ≤ 0.05) germination, seedlings growth and soil microbial enzymatic characteristics, which were statistically validated using one-way ANOVA and Tukey’s HSD test. Also, correlationship of germination and growth parameters were carried out, which showed high positivity in bioprimed seeds than hydroprimed seeds in contaminated soils, underscoring the eco-responsive efficacy of PB_AQ27 for restoration of stressed environment.