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<p>Four native plant species namely <i>Tridax procumbens</i>, <i>Cymbopogon citratus</i>, <i>Dodoneae viscosa</i> and <i>Ziziphus horrida</i> Roth were subjected to systematic analysis concerning absorbing and translocating heavy metals. Throughout the plant tissues, significant levels of iron (Fe), lead (Pb), nickel (Ni), chromium (Cr), manganese (Mn), cadmium (Cd), cerium (Ce), and lanthanum (La) were detected by using atomic absorption spectroscopy (AAS) with <i>Tridax procumbens</i> exhibiting the highest bioaccumulation and metal translocation ability. This paper aims at combining the methodology of evaluating the potential of phytoremediation in heavy metal-contaminated soils in Tumatti Hills, Ballar, India. Plant and soil samples were taken and analysed using metal. The most important indices, such as Bioaccumulation Factor (BAF), Bioconcentration Factor (BCF), Metal Enrichment Factor (MEF), and Metal Translocation Factor (MTF) were calculated to measure the efficiency with which metals are up taken. Metal-tolerant taxa of <i>Bacillus</i> species, <i>E. coli</i>, and Staphylococcus species were identified by using culture techniques and biochemical profiling, which suggested the presence of rhizospheric bacteria isolates. It was reported that species showed species selective metal absorption patterns with <i>Tridax</i> and <i>Ziziphus</i> being more likely to be permanently retained in phytoextraction, and <i>Cymbopogon</i> and <i>Dodoneae</i> in phyto translocation. Another new feature was the green synthesis of iron oxide nanoparticles by the use of <i>Tridax</i> biomass. Characterization through Ultraviolet–visible (UV–Vis), Scanning electron microscopy (SEM), Energy Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) confirmed the formation of bio-functionalized Ferric-oxide or Iron-oxide (Fe₂O₃) nanoparticles with environmental and catalytic applications. The work presents a scalable, long-term remediation paradigm that combines plant selection, microbial synergy, and green nanotechnology to manage heavy metal contamination in mining-impacted landscapes.</p> Graphical Abstract <p></p>

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Heavy Metal Tolerant Plants and their Rhizobacteria: Ecological insights from Tumatti Hill, Ballari, India

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Sai Sandeep Yanamandra,
  • Blessy Hadassah Vathsalya Gorremuchu,
  • Prabhurajeshwar Chidre,
  • Danamma Shettar,
  • Ashajyothi Chavan,
  • Harish Handral

摘要

Four native plant species namely Tridax procumbens, Cymbopogon citratus, Dodoneae viscosa and Ziziphus horrida Roth were subjected to systematic analysis concerning absorbing and translocating heavy metals. Throughout the plant tissues, significant levels of iron (Fe), lead (Pb), nickel (Ni), chromium (Cr), manganese (Mn), cadmium (Cd), cerium (Ce), and lanthanum (La) were detected by using atomic absorption spectroscopy (AAS) with Tridax procumbens exhibiting the highest bioaccumulation and metal translocation ability. This paper aims at combining the methodology of evaluating the potential of phytoremediation in heavy metal-contaminated soils in Tumatti Hills, Ballar, India. Plant and soil samples were taken and analysed using metal. The most important indices, such as Bioaccumulation Factor (BAF), Bioconcentration Factor (BCF), Metal Enrichment Factor (MEF), and Metal Translocation Factor (MTF) were calculated to measure the efficiency with which metals are up taken. Metal-tolerant taxa of Bacillus species, E. coli, and Staphylococcus species were identified by using culture techniques and biochemical profiling, which suggested the presence of rhizospheric bacteria isolates. It was reported that species showed species selective metal absorption patterns with Tridax and Ziziphus being more likely to be permanently retained in phytoextraction, and Cymbopogon and Dodoneae in phyto translocation. Another new feature was the green synthesis of iron oxide nanoparticles by the use of Tridax biomass. Characterization through Ultraviolet–visible (UV–Vis), Scanning electron microscopy (SEM), Energy Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) confirmed the formation of bio-functionalized Ferric-oxide or Iron-oxide (Fe₂O₃) nanoparticles with environmental and catalytic applications. The work presents a scalable, long-term remediation paradigm that combines plant selection, microbial synergy, and green nanotechnology to manage heavy metal contamination in mining-impacted landscapes.

Graphical Abstract