Molecular Aspects of Arsenic Responsive Microbes in Soil-Plant-Aqueous Triphasic Systems

Majumdar, Arnab; Afsal, Fathima; Pathak, Saurav; Upadhayay, Munish Kumar; Roychowdhury, Tarit; Srivastava, Sudhakar

doi:10.1007/978-3-031-16360-9_14

Cited by 3 publications

(2 citation statements)

References 116 publications

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“…The association between positively charged metal ions and negatively charged EPSs and cell surfaces affects EPS-facilitated biosorption. In addition to causing or triggering biofilm formation in response to Cd contamination, Herminiimonas arsenicoxydans, a rhizobacterium with a Gram-negative phenotype, has also been reported to use EPSs to scavenge Cd when exposed to a 5 mM concentration [257]. This work demonstrates that, although rhizobacterial EPS production may not be increased in response to HM stress, produced EPS can still adsorb the metal.…”

Section: Production Of Exopolysaccharidesmentioning

confidence: 81%

Recent Advances in Microbial-Assisted Remediation of Cadmium-Contaminated Soil

Zulfiqar,

Haider,

Maqsood

et al. 2023

Plants

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Soil contamination with cadmium (Cd) is a severe concern for the developing world due to its non-biodegradability and significant potential to damage the ecosystem and associated services. Industries such as mining, manufacturing, building, etc., rapidly produce a substantial amount of Cd, posing environmental risks. Cd toxicity in crop plants decreases nutrient and water uptake and translocation, increases oxidative damage, interferes with plant metabolism and inhibits plant morphology and physiology. However, various conventional physicochemical approaches are available to remove Cd from the soil, including chemical reduction, immobilization, stabilization and electro-remediation. Nevertheless, these processes are costly and unfriendly to the environment because they require much energy, skilled labor and hazardous chemicals. In contrasting, contaminated soils can be restored by using bioremediation techniques, which use plants alone and in association with different beneficial microbes as cutting-edge approaches. This review covers the bioremediation of soils contaminated with Cd in various new ways. The bioremediation capability of bacteria and fungi alone and in combination with plants are studied and analyzed. Microbes, including bacteria, fungi and algae, are reported to have a high tolerance for metals, having a 98% bioremediation capability. The internal structure of microorganisms, their cell surface characteristics and the surrounding environmental circumstances are all discussed concerning how microbes detoxify metals. Moreover, issues affecting the effectiveness of bioremediation are explored, along with potential difficulties, solutions and prospects.

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