Role of rhizosphere microbiome during phytoremediation of heavy metals

Bretón-Deval, Luz; Guevara-García, Ángel Arturo; Juárez, Katy; Lara, Paola Jazmín Tirado; Rubio-Noguez, D.; Tovar-Sánchez, Efraı́n

doi:10.1016/b978-0-323-85455-9.00016-3

Cited by 9 publications

(4 citation statements)

References 202 publications

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“…While metatranscriptomic analyses could confirm this assertion, assessing functional potential enables us to identify pathways of interest that could be further elucidated using various molecular tools. The primary mechanisms microorganisms employ to mitigate the toxicity of cationic metals, such as Cd and Pb, involve metal efflux, sequestration, DNA repair systems, and adjustments in membrane fluidity (Breton-Deval et al 2022). However, as observed, root-associated microorganisms exhibit varying functional potentials, some more specific than others.…”

Section: The Functional Potential Of the Rhizobiome In CD And Pb Phyt...mentioning

confidence: 99%

Pollution pressure drives microbial assemblages that improve the phytoremediation potential of heavy metals by Ricinus communis

Rubio-Noguez,

Breton-Deval,

Salinas-Peralta

et al. 2024

Preprint

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Due to the rapid expansion of industrial activity, soil pollution has intensified. Plants growing in these polluted areas have developed a rhizobiome uniquely and specially adapted to thrive in such environments. However, it remains uncertain whether pollution acts as a sufficiently selective force to shape the rhizobiome, and whether these adaptations endure over time, potentially aiding in long-term phytoremediation. Therefore, in the present study, we aimed to compare whether the microbiome associated with roots from plants germinated in polluted riverbanks will improve the phytoremediation of Cd and Pb under mesocosm experiments compared with plants germinating in a greenhouse. The experimental design was a factorial 2 x 2, i.e., the origin of the plant and the presence or absence of 100 mg/L of Cd and 1000 mg/L of Pb. Our results showed that plants germinated in polluted riverbanks have the capacity to accumulate twice the amount of Pb and Cd during mesocosm experiments. The metagenomic analysis showed that plants from the river exposed to heavy metals at the end of mesocosm experiments were rich in Rhizobium_sp_AC44_96 and Enterobacter sp. EA_1, Enterobacter soli, Pantoea rwandensis, Pantoea endophytica. In addition, those plants were uniquely associated with Rhizobium grahamii, which likely contributed to the differences in the levels of phytoremediation achieved. Furthermore, the functional analysis revealed an augmented functional potential related to hormones, metallothioneins, dismutases, and reductases; meanwhile, the plants germinated in the greenhouse showed an unspecific strategy to exceed heavy metal stress. In conclusion, pollution pressure drives microbial assemblages that improve the phytoremediation process.

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Section: The Functional Potential Of the Rhizobiome In CD And Pb Phyt...mentioning

confidence: 99%

Pollution pressure drives microbial assemblages that improve the phytoremediation potential of heavy metals by Ricinus communis

Rubio-Noguez,

Breton-Deval,

Salinas-Peralta

et al. 2024

Preprint

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“…This may also reduce the competition between food crops and commercially important crops, which are generally chosen by the farmer for more economic gains. In addition, during the phytoremediation process, plants and their associated microbiome can participate in the extraction, degradation, or immobilization of pollutants and improve the microenvironment of the damaged soil 16 …”

Section: Introductionmentioning

confidence: 99%

“…In addition, during the phytoremediation process, plants and their associated microbiome can participate in the extraction, degradation, or immobilization of pollutants and improve the microenvironment of the damaged soil. 16 During the phytoremediation process, plant and microbe symbiosis play an effective role in the improvement of soil quality, nutrient mineralization, plant growth promotion, and restoration of biodiversity and ecological function in degraded soils. 17 For example, the lead (Pb) immobilization potential of phosphate solubilizing bacteria isolated from heavy metal contaminated soils was reported previously.…”

Section: Introductionmentioning

confidence: 99%

Sustainable phytoremediation of highly acidic mine spoil through economical valuable crop Pelargonium graveolens L

Jain

Yadav

Mishra

et al. 2022

Env Prog and Sustain Energy

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The phytostabilization of acid mine spoil by industrially important aromatic crops could be a sustainable solution with minimum input for the problem associated with acidic mine spoil-affected areas. In the present study, the suitability of Pelargonium graveolens for phytostabilization of acidic mine spoil has been investigated in three different combinations (T1: 100% soil; T2: 100% mine spoil, T3: 75 mine spoil: 25 soil and T4: 50 mine spoil: 50 soil). The plant growth performance, metal accumulation, ecological indices, soil properties, enzymes, and microbial diversity along with the identification of dominant bacterial isolates were investigated in the study. The results indicated that mine spoil was highly acidic (pH 3.01) and rich in minerals and toxic metals. The values of the tolerance index and oil content of P. graveolens L under different treatments varied from 43% to 89% and from 0.10 to 0.13% without affecting oil quality, respectively. Bioconcentration (BCF) and translocation factor (TF) indicated that the P. graveolens can be used as a phyto-excluder for Al, Fe, Cr, Zn, and Pb and phytoextractor for Cu, Ni, and Mn. The plantation of P. graveolens enhanced the microbial biomass and enzymatic activities of soil and immobilized the metals. The increase in the Shannon index from 1.67-1.86 to 1.9-2.61 suggested enhanced bacterial diversity after plantation. The identify bacterial isolates were metal tolerant and plant growth promoters. The study suggested that P. graveolens is suitable for the phytostabilization purpose of acidic mine spoils along with the economic return.

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“…In the study reported here, the existence of bacteria and fungi population aided the performance of Hg breakdown and uptake by the roots from contaminated soil. Some investigators have claimed that altering the interaction between metals and plants boosts the availability of nutrients by biotransformation or sequestration of metals(Gupta et al 2017;Novo et al 2018;Breton-Deval et al 2022). As a result, the roots that are interacting with numerous microbial communities within the niche affect the plant's growth(Saldarriaga et al 2023).…”

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confidence: 99%

Costus speciosus (J. Koenig) Sm., a suitable plant species for phytoremediation of crude oil and mercury contaminated soil

Talukdar,

Baruah,

Bhuyan

et al. 2023

Preprint

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The aim of this study was to evaluate the efficiency of Costus speciosus in the degradation of crude oil and mercury (Hg) from the contaminated soil in pot experiments in the net house for 180 days. C. speciosus was transplanted in soil containing 19150 mg kg− 1 crude oil and 3.2 mg kg− 1 Hg. The study includes the evaluation of plant height, root length, total petroleum hydrocarbon (TPH) and Hg degradation in soil, TPH and Hg accumulation in plants grown in fertilized and unfertilized pots, and rhizospheric most probable number (MPN) at 60 days interval. The average biomass production and heights of C. speciosus in contaminated treatments were significantly (p < 0.05) lower compared to the unvegetated control. Plants grown in contaminated soil showed relatively reduced root surface area compared to the uncontaminated treatments. TPH degradation in planted fertilized, unplanted and planted unfertilized pot was 63%, 0.8% and 38% respectively. However, compared to unvegetated treatments, TPH degradation was significantly higher (p < 0.05) in vegetated treatments. Comparison of fertilized and unfertilized soils showed that TPH accumulation in plant roots and shoots was relatively higher in fertilized soils. Hg degradation in soil was significantly (p < 0.05) more in planted treatment compared to unplanted treatments. The fertilized soil showed relatively more Hg degradation in soil and its accumulation in roots and shoots of plants in comparison to unfertilized soil. MPN in treatments with plants was significantly greater (p < 0.05) than in without plants. It was observed that C. speciosus accelerated the biodegradation of crude oil and Hg in soil and their accumulation in roots and shoots.

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Role of rhizosphere microbiome during phytoremediation of heavy metals

Cited by 9 publications

References 202 publications

Pollution pressure drives microbial assemblages that improve the phytoremediation potential of heavy metals by Ricinus communis

Pollution pressure drives microbial assemblages that improve the phytoremediation potential of heavy metals by Ricinus communis

Sustainable phytoremediation of highly acidic mine spoil through economical valuable crop Pelargonium graveolens L

Costus speciosus (J. Koenig) Sm., a suitable plant species for phytoremediation of crude oil and mercury contaminated soil

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