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Review
. 2023 Jun 1;13(2):252-269.
doi: 10.3390/jox13020019.

Microbe-Plant Interactions Targeting Metal Stress: New Dimensions for Bioremediation Applications

Baljeet Singh Saharan  1 , Twinkle Chaudhary  2 , Balwan Singh Mandal  3 , Dharmender Kumar  4 , Ravinder Kumar  5 , Pardeep Kumar Sadh  5 , Joginder Singh Duhan  5
Affiliations
Review

Microbe-Plant Interactions Targeting Metal Stress: New Dimensions for Bioremediation Applications

Baljeet Singh Saharan et al. J Xenobiot. .

Abstract

In the age of industrialization, numerous non-biodegradable pollutants like plastics, HMs, polychlorinated biphenyls, and various agrochemicals are a serious concern. These harmful toxic compounds pose a serious threat to food security because they enter the food chain through agricultural land and water. Physical and chemical techniques are used to remove HMs from contaminated soil. Microbial-metal interaction, a novel but underutilized strategy, might be used to lessen the stress caused by metals on plants. For reclaiming areas with high levels of heavy metal contamination, bioremediation is effective and environmentally friendly. In this study, the mechanism of action of endophytic bacteria that promote plant growth and survival in polluted soils-known as heavy metal-tolerant plant growth-promoting (HMT-PGP) microorganisms-and their function in the control of plant metal stress are examined. Numerous bacterial species, such as Arthrobacter, Bacillus, Burkholderia, Pseudomonas, and Stenotrophomonas, as well as a few fungi, such as Mucor, Talaromyces, Trichoderma, and Archaea, such as Natrialba and Haloferax, have also been identified as potent bioresources for biological clean-up. In this study, we additionally emphasize the role of plant growth-promoting bacteria (PGPB) in supporting the economical and environmentally friendly bioremediation of heavy hazardous metals. This study also emphasizes future potential and constraints, integrated metabolomics approaches, and the use of nanoparticles in microbial bioremediation for HMs.

Keywords: bioremediation; computational tools; heavy metal; nanoparticles; phytoremediation.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The mechanisms used by HMT-PGP microbes in the remediation of HMs from contaminated soils.
Figure 2
Figure 2
Mechanisms used by microbes for the remediation of HMs in polluted soils are depicted in Figure 2.
Figure 3
Figure 3
Depicting the experimental technique approach used for validation of in silico-designed pathways.
See this image and copyright information in PMC

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