Potential of plant growth promoting rhizobacteria to mitigate chromium contamination

Mushtaq, Zain; Liaquat, Mehwish; Nazir, Anum; Liaquat, Rabia; Iftikhar, Hira; Anwar, Waheed; Itrat, Nizwa

doi:10.1016/j.eti.2022.102826

Cited by 21 publications

(10 citation statements)

References 72 publications

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“…There must be some acceptable techniques that can be used to combat this metal pollution if we are to prevent such a serious health risk brought on by it. We need to keep an eye out for metal contamination as this trend continues (Mushtaq et al,2022). The three primary stable forms of chromium that are known to exist in nature are metallic chromium, trivalent chromium, and hexavalent chromium.…”

Section: Chromium Toxic Effects In Humanmentioning

confidence: 99%

“…Such PGPR may be crucial for phytoextraction and plant growth due to its various Cr resistance properties paired with plant growth stimulation. In order to better understand how particular Cr (VI)-resistant PGPR interact with M. sativa species to reduce Cr stress and increase Cr (VI) bioremediation, marijuana experiments were conducted (Mushtaq et al, 2022).…”

Section: Removal Of Crmentioning

confidence: 99%

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Potential of plant growth promoting bacteria to alleviate chromium pollution.

Pal,

Ghosh,

Ghorui

et al. 2023

SFS

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Heavy metals (chromium, lead, cadmium, mercury, arsenic) is a threat to environment. The chromium (Cr) is one of the lethal heavy metals which affects biological activities of living systems. The two most important form of Cr, Cr (III) and Cr (VI) are more stable in environment. The plant growth also effected by the high concentration of Cr (VI). The biological remediation is a eco-friendly and low cost remediation options of heavy metals. A bunch of plant growth promoting bacteria (PGPB) can resist the toxic Cr and also able to carry their PGPB attributes. Recent studies have discussed the use of heavy metal resistant-PGPBs (Bacillus sp., Azospirillum sp.) to increase agricultural output without metal build-up in plant tissues. This review describes the mechanisms of Cr tolerant-PGPBs (which alleviate metal stress to plants) and its application in agriculture.

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Section: Chromium Toxic Effects In Humanmentioning

confidence: 99%

Section: Removal Of Crmentioning

confidence: 99%

Potential of plant growth promoting bacteria to alleviate chromium pollution.

Pal,

Ghosh,

Ghorui

et al. 2023

SFS

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“…Depending on their level of oxidation, several forms of chromium can be distinguished, including hexavalent chromium designated by Cr(VI) resulting from the oxidation of trivalent chromium designated by Cr(III). In fact, Cr(VI) is characterized by its high mobility, reactivity, and ability to cross biological membranes (Mushtaq et al 2022). Numerous studies have documented the risks associated with Cr(VI) toxicity, including: dysfunction of photosynthesis and growth in plants, mutations, and disturbances of biological functions in humans (Mishra et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Hexavalent Chromium Cr(VI) onto Ziziphus Lotus Fruits Powder: Kinetics, Equilibrium, and Thermodynamics

El Yakoubi,

El Ansari,

Ennami

et al. 2024

J. Ecol. Eng.

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Ziziphus lotus has been the subject of several researchs because of its nutritional benefits and ecological attributes. The removal of hexavalent chromium Cr(VI) from a solution using powdered Zizphus lotus fruits, for its qualities of being inexpensive as well as environmentally friendly, was investigated. The results obtained showed that at pH = 2, at 30°C, after 600 min of adsorbent/adsorbate contact, with 100 mg/L as initial concentration of Cr(VI) and a biosorbent dosage of 5 g/L, the biosorption of Cr(VI) on Zizphus lotus fruit powder (ZLFP) is at its maximum rate. The sorption process was exothermic (∆H° = -6.69 kJ/mol), and was characterized by a positive entropy values (∆S° = 46.76 J/K mol) suggesting a high affinity of the ZLFP for Cr(VI). Given that the Gibbs free energy (∆G°) is negative and decreases as temperatures increase from 293 to 323 K, the process of biosorption is both feasible and spontaneous. The Temkin model and the Langmuir model both generated excellent fits to the equilibrium data. The maximum monolayer biosorption capacity was 36.11 mg/g. The pseudo second order model was used to fit the kinetic data relating to the adsorption of Cr(VI) on the ZLFP. The FTIR spectral analysis allowed the characterization of the biochemical groups mainly involved in the sorption of Cr(VI) ions on the ZLFP, and which are: N-C, H-O, O-C, H-C, and O=C. The capacity of Ziziphus lotus fruit as an inexpensive, effective, and ecofriendly biosorbent is confirmed through this study.

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“…Grapes inoculated with Burkholderia PsJN showed earlier and faster increases in gene transcription and metabolite levels under low-temperature stress [19]. PGPR can convert the highly oxidizing Cr 6+ in the environment into the relatively less toxic Cr 3+ , thereby reducing the harm of chromium to plants [20]. PGPR also has a certain role in promoting crop growth under saline-alkali stress.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomics and Metabolomics Analysis Revealed the Ability of Microbacterium ginsengiterrae S4 to Enhance the Saline-Alkali Tolerance of Rice (Oryza sativa L.) Seedlings

Ji,

Qi,

Zhang

et al. 2024

Agronomy

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Soil salinization is a major factor that reduces crop yields. There are some plant growth-promoting rhizobacteria (PGPR) that can stimulate and enhance the salt tolerance of plants near their roots in saline–alkali environments. Currently, there is relatively little research on PGPR in rice saline–alkali tolerance. In the early stages of this study, a strain of Microbacterium ginsengiterrae S4 was screened that could enhance the growth of rice in a laboratory-simulated saline–alkali environment (100 mM NaCl, pH 8.5). The experiment investigated the effects of S4 bacteria on the growth, antioxidant capacity, and osmotic regulation of rice seedlings under saline–alkali stress. RNA-Seq technology was used for transcriptome sequencing and UPLC-MS/MS for metabolite detection. Research has shown that S4 bacteria affect the growth of rice seedlings under saline–alkali stress through the following aspects. First, S4 bacteria increase the antioxidant enzyme activity (SOD, POD, and CAT) of rice seedlings under saline–alkali stress, reduce the content of MDA, and balance the content of osmotic regulatory substances (soluble sugar, soluble protein, and proline). Second, under saline–alkali stress, treatment with S4 bacteria caused changes in differentially expressed genes (DEGs) (7 upregulated, 15 downregulated) and differentially metabolized metabolites (101 upregulated; 26 downregulated) in rice seedlings. The DEGs are mainly involved in UDP-glucose transmembrane transporter activity, while the differentially metabolized metabolites are mainly involved in the ABC transporters pathway. Finally, key genes and metabolites were identified through correlation analysis of transcriptomes and metabolomes, among which OsSTAR2 negatively regulates L-histidine, leading to an increase in L-histidine content. Furthermore, through gene correlation and metabolite correlation analysis, it was found that OsWRKY76 regulates the expression of OsSTAR2 and that L-histidine also causes an increase in 2-methyl-4-pentenoic acid content. Based on the above analysis, the addition of S4 bacteria can significantly improve the tolerance of rice in saline–alkali environments, which has a great application value for planting rice in these environments.

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Potential of plant growth promoting rhizobacteria to mitigate chromium contamination

Cited by 21 publications

References 72 publications

Potential of plant growth promoting bacteria to alleviate chromium pollution.

Potential of plant growth promoting bacteria to alleviate chromium pollution.

Biosorption of Hexavalent Chromium Cr(VI) onto Ziziphus Lotus Fruits Powder: Kinetics, Equilibrium, and Thermodynamics

Transcriptomics and Metabolomics Analysis Revealed the Ability of Microbacterium ginsengiterrae S4 to Enhance the Saline-Alkali Tolerance of Rice (Oryza sativa L.) Seedlings

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