Phytoremediation of Heavy Metal- Contaminated Tailings Soil by Symbiotic Interaction of Cymbopogon Citratus and Solanum Torvum with Bacillus Cereus T1B3

Nayak, Arunima; Basu, Aradhana; Panda, Sudhansu Sekhar; Dhal, Nabin Kumar; Lal, R. K.

doi:10.1080/15320383.2019.1634001

Cited by 14 publications

(7 citation statements)

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“…In line with our study, Wu et al (2020) also reported significant increase in root biomass of V. zizanioides with application of PGPR. A recent study on C. citratus, one of the species in our field study, also reported significant increase in length and fresh biomass with effect of Baccilus cerus a known PGPR (Nayak et al, 2019). Similarly, researchers also found that inoculation of mycorrhizal fungi increased the number of tillers and biomass of C. citratus (Fokom et al, 2019;Lermen et al, 2015;Ultra, 2020).…”

Section: Resultssupporting

confidence: 79%

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Enhancing productivity of perennial aromatic grasses on marginal lands through plant growth promoting rhizobacteria

et al. 2022

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The cultivation of perennial aromatic grasses on marginal lands is a socioeconomically and ecologically sustainable approach. However, the studies on assessment of the potential efficacies of consortium of plant growth promoting rhizobacteria (PGPR) in enhancing the productivity of perennial aromatic grasses on marginal lands are rare. In this study, therefore, we studied the effect of PGPR consortium (Pseudomonas protegens and two strains of Bacillus paramycoides) on yield and economics of four perennial aromatic grasses (Vetiveria zizanioides, Cymbopogon citratus, C. martinii, and C. winterianus) in slightly alkaline (pH >8.50) soil. A field experiment was established in a complete randomized block design with two treatments (i.e. with PGPR consortium and without PGPR consortium) and three replications. The changes in growth (height, number of slips, and leaf area index), productivity (fresh shoot-root biomass and oil yield), quality (important secondary metabolites), and economics (cost of cultivation, gross, and net return) in response to PGPR were observed at three harvests. The species-specific effects of PGPR were found on the growth and productivity of perennial aromatic grasses. On an average, the highest increase in growth and productivity with the effect of PGPR was found in V. zizanioides followed by other grasses. The highest oil yield 16.38, 71.14, 53.13, and 49.49 kg ha À1 were recorded at third harvest in PGPR consortium treated plots for V. zizanioides, C. citratus, C. martinii, and C. winterianus, respectively. The agronomical economics show the highest net return of 2094.95 $US in the cultivation of V. zizanioides with the application of PGPR.

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Section: Resultssupporting

confidence: 79%

“…The promising effects of biofertilizers (nitrogen fixers, phosphate solubilizers, etc. ), arbuscular mycorrhizal fungi and growth promoting microbes on the growth and productivity of medicinal plants and edible crops have been reported by several researchers (Namdeo, 2018;Nayak et al, 2019. Chen et al, 2020Khan et al, 2020;Moncada et al, 2021).…”

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confidence: 99%

Enhancing productivity of perennial aromatic grasses on marginal lands through plant growth promoting rhizobacteria

et al. 2022

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“…SNB6 inoculation(Wu et al 2020). Similarly, Bacillus cereus T1B3 inoculation doubled the metal transfer from soil to the roots and shoots of Cymbopogon citratus(Nayak et al 2019). Most previous studies have evaluated the effect of PGPR inoculation on BCF values based on the total heavy metal concentration.…”

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confidence: 99%

Effect of Novosphingobium sp. CuT1 inoculation on the rhizoremediation of heavy metal- and diesel-contaminated soil planted with tall fescue

Lee

Cho

2022

Environ Sci Pollut Res

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Rhizoremediation is a promising method based on the synergism between plant and rhizobacteria, which constitutes a promising means to remediate soil co-contaminated with heavy metals and total petroleum hydrocarbons (TPHs). A plant growth-promoting (PGP) rhizobacterium with diesel-degrading capacity and heavy metals tolerance was isolated from the rhizosphere of tall fescue (Festuca arundinacea L.), after which the effects of its inoculation on rhizoremediation performance were evaluated in heavy metal and diesel-contaminated soil planted with tall fescue.The bacterial isolate (Novosphingobium sp. CuT1) was characterized by its production of indole-3-acetic acid (IAA), 1-aminocyclopropane-1carboxylic acid (ACC) deaminase activity, and siderophore productivity as PGP traits. CuT1 was able to grow on 1/10 LB-agar plates containing 5 mM of Cu or 5 mM of Pb. Compared to the rhizoremediation performance of the co-contaminated soil (Cu + Pb + diesel) without inoculation, the bioavailable Cu concentrations in soil and the biomass of tall fescue were signi cantly increased CuT1 inoculation. Additionally, the root growth of tall fescue was also promoted CuT1 inoculation. Correlation analysis showed that Cu bioavailability and bioconcentration factor were positively correlated with CuT1 inoculation. The diesel removal e ciency showed a positive correlation with CuT1 inoculation although diesel removal was below 30%. CuT1 inoculation was positively correlated with IAA and dehydrogenase activity in soil. Moreover, the dry biomass of the tall fescue's roots was highly associated with CuT1 inoculation. Collectively, our ndings suggest that Novosphingobium sp. CuT1 can be utilized as an applicable bioresource to enhance rhizoremediation performance in heavy metal-and TPH-contaminated soils.

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“…Similarly, the phosphate-solubilizing and IAA-producing potential of test isolate were determined as follows. In brief, 100 µl of B. cereus NDRMN001 was inoculated on the sterilized Pikovskaya’s agar (PKA) medium (pH 7.1 ± 0.3) via the pour plate method and cultured at 30° for 48 h ( Nayak et al., 2019 ). After incubation, well-grown cultures (colonies) with halo zones were deemed positive for phosphate solubilization.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the quantity of total proteins, total carbohydrates, and chlorophyll, and the carotenoid content of C. cajan (L.) Millsp. from study I, II, and control were studied individually ( Nayak et al., 2019 ). All the parameters were analyzed in triplicate.…”

Section: Methodsmentioning

confidence: 99%

Assessment of PGP traits of Bacillus cereus NDRMN001 and its influence on Cajanus cajan (L.) Millsp. phytoremediation potential on metal-polluted soil under controlled conditions

Narayanan

2022

Front. Plant Sci.

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The current study looked at the plant growth-promoting (PGP) traits of the pre-isolated and metal-tolerant Bacillus cereus NDRMN001 as well as their stimulatory effect on the physiology, biomolecule content, and phytoremediation potential of Cajanus cajan (L.) Millsp. on metal-polluted soil. The bauxite mine, which is surrounded by farmland (1 km away), has been severely polluted by metals such as Cd (31.24 ± 1.68), Zn (769.57 ± 3.46), Pb (326.85 ± 3.43), Mn (2519.6 ± 5.71), and Cr (302.34 ± 1.62 mg kg−1) that exceeded Indian standards. The metal-tolerant B. cereus NDRMN001 had excellent PGP activities such as synthesis of hydrogen cyanide (HCN), siderophore, indole acetic acid (IAA), N2 fixation, and P solubilization. Furthermore, the optimal growth conditions (temperature of 30°C, pH 6.5, 6% glucose, 9% tryptophan, and 1.5% tricalcium phosphate) for effective synthesis and expression of PGP traits in B. cereus NDRMN001 were determined. Such metal-tolerant B. cereus NDRMN001 traits can significantly reduce metals in polluted soil, and their PGP traits significantly improve plant growth in polluted soil. Hence, this strain (B. cereus NDRMN001) significantly improved the growth and phytoremediation potential of C. cajan (L.) Millsp on metal-polluted soil without [study I: 2 kg of sieved and autoclaved metal-polluted soil seeded with bacterium-free C. cajan (L.) Millsp. seeds] and with [study II: 2 kg of sieved and autoclaved metal-polluted soil seeded with B. cereus NDRMN001-coated C. cajan (L.) Millsp. seeds] B. cereus NDRMN001 amalgamation. Fertile soil was used as control. The physiological parameters, biomolecule contents, and the phytoremediation (Cr: 7.74, Cd: 12.15, Zn: 16.72, Pb: 11.47, and Mn: 14.52 mg g−1) potential of C. cajan (L.) Millsp. were significantly effective in study II due to the metal-solubilizing and PGP traits of B. cereus NDRMN001. These results conclude that the test bacteria B. cereus NDRMN001 considerably improved the phytoremediation competence of C. cajan (L.) Millsp. on metal-polluted soil in a greenhouse study.

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Phytoremediation of Heavy Metal- Contaminated Tailings Soil by Symbiotic Interaction of Cymbopogon Citratus and Solanum Torvum with Bacillus Cereus T1B3

Cited by 14 publications

References 50 publications

Enhancing productivity of perennial aromatic grasses on marginal lands through plant growth promoting rhizobacteria

Enhancing productivity of perennial aromatic grasses on marginal lands through plant growth promoting rhizobacteria

Effect of Novosphingobium sp. CuT1 inoculation on the rhizoremediation of heavy metal- and diesel-contaminated soil planted with tall fescue

Assessment of PGP traits of Bacillus cereus NDRMN001 and its influence on Cajanus cajan (L.) Millsp. phytoremediation potential on metal-polluted soil under controlled conditions

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