Biofilm production in a novel polyextremophilic Bacillus subtilis: A strategic maneuver for survival

Roy, Bedaprana; Maitra, Debapriya; Chandra, Ayan; Ghosh, J. K.; Mitra, Arup Kumar

doi:10.1016/j.bcab.2022.102517

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…Such bacteria also adapt themselves in various ways so that they can endure significant concentrations of heavy metals, when compared to normal bacteria species. Polyextremophilic bacteria, which are accustomed to grow in different combinations of inhospitable environments, have the caliber to form extraordinary outstretched biofilms, which is correlated with the survival of polyextremophiles in such harsh conditions (Roy et al., 2022). Polyextremophiles flourish in niches with high content of heavy metals like cadmium, zinc, copper and arsenic, which when absorbed by them can lead to manifold critical consequences.…”

Section: Correlating Biofilm and Metallothioneins In Bioremediationmentioning

confidence: 99%

Biofilm and metallothioneins: A dual approach to bioremediate the heavy metal menace

Roy,

Maitra,

Sarkar

et al. 2023

Environmental Quality Mgmt

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Metallothioneins are a class of proteins produced by both prokaryotes and eukaryotes, having low molecular weight and abundant cysteine residues. These proteins play a humongous role in binding, sequestration, and even buffering of the intracellular metal ions. Though they are a wide class of proteins, much of them are yet to be explored. Their metal binding attribute is unique and they form distinctive metal‐thiolate clusters. They have also been known to have ROS scavenging activities due to the presence of the cysteine residues. Phytochelatins also play major roles in metal sequestration pathways. Biofilms on the other hand are clusters of bacterial cells surrounded by an extracellular matrix of polymeric substances secreted by the bacteria themselves. Biofilms play multiple roles, from nutrient sequestration, stress resistance to surface adherence. But lesser explored arenas include assistance in heavy metal trapping and bio‐remediation. Researchers have conducted studies that have demonstrated increased metal trapping, resistance and uptake in biofilm forming strains than non‐biofilm forming mutants. Therefore, this study would explore the dual role of metallothionein and biofilm in their activity of metal sequestration and heavy metal remediation and provide certain insights so as to keenly understand the correlations between the two.

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Section: Correlating Biofilm and Metallothioneins In Bioremediationmentioning

confidence: 99%

Biofilm and metallothioneins: A dual approach to bioremediate the heavy metal menace

Roy,

Maitra,

Sarkar

et al. 2023

Environmental Quality Mgmt

Self Cite

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Organic farming in the improvement of soil health and productivity of tea cultivation: A pilot study

Maitra,

Roy,

Das

et al. 2024

Environmental Quality Mgmt

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The sub‐mountainous tea gardens of the Dooars region of West Bengal, which contribute approximately 25% of the national tea yield, are constantly fighting with diminishing soil fertility. Inorganic alternatives like chemical fertilizers can provide easier yet short‐term solutions, as their prolonged and indiscriminate usage leaches the soil, devouring its productivity, increasing the soil's heavy metal contents, and subsequently accumulating those heavy metals in leaves. A plausible substitution in this scenario could be the use of organic alternatives like composting or biofertilizer. Although references to such alternative means are found in the literature, a holistic approach targeting plant growth promotion along with mitigating soil metal toxicity is lacking. Keeping this background in mind, this pilot study was designed to optimize the dosage of novel biofertilizers (using resident and alien flora) that can reduce heavy metal loads and residual toxicity in soil, thereby improving overall soil health and tea production. Two potential metallophilic plant growth‐promoting strains of Bacillus sp. (previously reported) were selected and applied to potted tea plants of two different varieties of tea: TV9 and TV25. Among the two modes of treatment tested: solid treatment (compost amended with bacterial culture) and liquid treatment (cell pellets mixed in water suspension), the water suspension‐based direct application of resident soil bacteria showed the highest physiological growth with reduced metal toxicity. Based on physiological data and physico‐chemical data collected, it was observed that direct application of bacteria showed better results in both plant and soil health improvement in comparison to regular compost amended with beneficial microflora. Therefore, this small‐scale pilot study aimed to optimize the dosage and mode of application of novel biofertilizers for improved soil and plant health.

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Potentiality of Polyextremophilic Organisms in Bioremediation of Aromatic Hydrocarbons and Persistent Organic Pollutants: A Biotechnological Approach

Mukherjee,

Chakraborty,

Das

et al. 2024

Trends in Biotechnology of Polyextremophiles

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Biofilm production in a novel polyextremophilic Bacillus subtilis: A strategic maneuver for survival

Cited by 7 publications

References 36 publications

Biofilm and metallothioneins: A dual approach to bioremediate the heavy metal menace

Biofilm and metallothioneins: A dual approach to bioremediate the heavy metal menace

Organic farming in the improvement of soil health and productivity of tea cultivation: A pilot study

Potentiality of Polyextremophilic Organisms in Bioremediation of Aromatic Hydrocarbons and Persistent Organic Pollutants: A Biotechnological Approach

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