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<p>The present study was conducted to explore how lithium and chromium affect <i>Zea may </i>L. and the efficiency of bacterial strains to alleviate metal stress by cultivating the plant with bacteria (<i>Klebsiella variicola</i> &amp; <i>Enterobacter cloacae</i>) that are resistant to their toxicity. Plants were grown in pots and kept in green house of botanical garden. Experiments were conducted in triplicate of each treatment (T1–T16) of maize. The estimations of morphological attributes and gas exchange parameters were made every two weeks in the botanical garden till harvesting. Physiological and growth parameters were evaluated at fifteen days&#xa0;intervals, and plants were collected after 150&#xa0;days of growth to observe lithium and chromium uptake in both aerial and subterranean portions. Post harvest, the concentration of lithium and chromium in roots and shoots of maize was measured using an Automatic Flame Photometer and Atomic Absorption Spectrophotometer, respectively. Results showed notable decrease in the quantity of branches, plant height, and plants in samples treated just with lithium and chromium as compared to control plants (without any treatment). While plants that were given bacterial inoculation showed considerable improvements in these growth indicators. The gas exchange rate in the metal-treated plants did not significantly differ from that in the plants subjected to bacterial inoculation and control group. A robust correlation was identified in roots between metal levels and bioconcentration factor. The content of lithium and chromium in both above and below-ground plant portions treated with bacterial strains was markedly lower than in those treated just with lithium and chromium. Our research indicates that lithium and chromium can substantially diminish the growth and physiochemical characteristics of maize; however, this loss can be mitigated through the application of resistant bacterial strains. This data can be beneficial for the remediation of lithium and chromium in agricultural crops.</p>

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Bioremediation of Metal(loid) toxicity in maize (Zea mays L.) by inoculating metal resistant bacterial strains

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • M. U. Hayyat,
  • S. Iqbal,
  • Q. F. Khan,
  • Z. Siddiq,
  • F. Sharif,
  • S. Ali,
  • L. Shahzad,
  • Z. Tahir,
  • M. Farhan,
  • T. A. Shah,
  • T. M. Dawoud,
  • M. Bourhia

摘要

The present study was conducted to explore how lithium and chromium affect Zea may L. and the efficiency of bacterial strains to alleviate metal stress by cultivating the plant with bacteria (Klebsiella variicola & Enterobacter cloacae) that are resistant to their toxicity. Plants were grown in pots and kept in green house of botanical garden. Experiments were conducted in triplicate of each treatment (T1–T16) of maize. The estimations of morphological attributes and gas exchange parameters were made every two weeks in the botanical garden till harvesting. Physiological and growth parameters were evaluated at fifteen days intervals, and plants were collected after 150 days of growth to observe lithium and chromium uptake in both aerial and subterranean portions. Post harvest, the concentration of lithium and chromium in roots and shoots of maize was measured using an Automatic Flame Photometer and Atomic Absorption Spectrophotometer, respectively. Results showed notable decrease in the quantity of branches, plant height, and plants in samples treated just with lithium and chromium as compared to control plants (without any treatment). While plants that were given bacterial inoculation showed considerable improvements in these growth indicators. The gas exchange rate in the metal-treated plants did not significantly differ from that in the plants subjected to bacterial inoculation and control group. A robust correlation was identified in roots between metal levels and bioconcentration factor. The content of lithium and chromium in both above and below-ground plant portions treated with bacterial strains was markedly lower than in those treated just with lithium and chromium. Our research indicates that lithium and chromium can substantially diminish the growth and physiochemical characteristics of maize; however, this loss can be mitigated through the application of resistant bacterial strains. This data can be beneficial for the remediation of lithium and chromium in agricultural crops.