Application of titanium dioxide nanoparticles to promote phytoremediation of Cd-polluted soil: contribution of PGPR inoculation

Zand, Ali Daryabeigi; Tabrizi, Alireza Mikaeili; Heir, Azar Vaezi

doi:10.1080/10889868.2020.1799929

Cited by 50 publications

(18 citation statements)

References 72 publications

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“…Several studies are underway and assess the effect of physical, chemical, and biological treatments for the remediation of heavy metals from soil such as P. japonica and organic amendments (peat moss and compost) on the growth and metal tolerance of Celosia argentea L. [2]. It was found that dual application of TiO 2 NPs and P. fluorescens enhanced the Cd content and accumulation by Trifolium repens in Cd-contaminated soil [17], and a combined application of biochar and PGPR (six strains of Bacillus spp.) significantly reduced the Cr concentration by up to 0.28 ± 1.01 mg/kg in wheat plants [4].…”

Section: Cadmium Content Of Lettuce Plantsmentioning

confidence: 99%

“…The physical and chemical methods are expensive, labor-intensive, and cause permanent changes in the properties of the soil, as they sometimes result in secondary pollutants. Biological methods, on the other hand, are effective and eco-friendly [16,17]. Therefore, an appropriate technology that can be used to solve this problem is bioremediation technology, which reduces the transfer of Cd to the soil by adding biosorbent materials such as biochar and microorganisms.…”

Section: Introductionmentioning

confidence: 99%

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The Combined Effect of Pseudomonas stutzeri and Biochar on the Growth Dynamics and Tolerance of Lettuce Plants (Lactuca sativa) to Cadmium Stress

et al. 2021

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Agricultural activities lead to the accumulation of cadmium (Cd) in the soil. It is necessary to identify effective and economical ways to reduce the soil Cd bioavailability. To achieve this, three bacterial strains, Pseudomonas stutzeri, P. koreensis, and P. fluorescens, were tested for tolerance and biosorption of different concentrations of Cd (0, 5, 10, 15, 20, and 25 mg L−1). During the 2020 and 2021 seasons, a pot experiment was conducted using four different soil amendments (control, biochar, P. stutzeri, and a combination) under four levels of Cd (0, 40, 80, and 120 mg kg−1) and assessing the effect on growth parameters, physiological modifications, antioxidant enzymes, and Cd accumulation in lettuce plants (Lactuca sativa cv. Balady). In vitro, the results showed that P. stutzeri was the most tolerant of Cd. Our findings in pot trials showed that T4 (biochar + P. stutzeri) was a more efficient treatment in terms of the growth parameters, with 452.00 g plant−1 was recorded for fresh weight, 40.10 g plant−1 for dry weight, 18.89 cm plant−1 for plant height, 6.03 cm2 for leaf area, and 20.48 for the number of leaves plant−1, while in terms of physiological characteristics, we recorded 1.29 mg g−1 FW, 0.35 μg g−1 FW, and 3.69 μg g−1 FW for total chlorophyll, carotenoids, and total soluble sugar, respectively; this was also reflected in the number of antioxidant enzymes and intensity of soil biological activities in soil treated with 120 mg kg−1 Cd compared with the control and other treatments in the first season. A similar trend was observed in the second season. Additionally, significantly lower Cd was observed in both the root (67%) and shoots (78%). Therefore, a combined application of biochar and P. stutzeri could be used as an alternative to mitigate Cd toxicity.

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Section: Cadmium Content Of Lettuce Plantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Combined Effect of Pseudomonas stutzeri and Biochar on the Growth Dynamics and Tolerance of Lettuce Plants (Lactuca sativa) to Cadmium Stress

et al. 2021

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“…It also reduced the amount of TiO 2 NPs required for the phytoremediation of soils particularly polluted with heavy metals. It also promoted the growth of T. repens with increased Cd uptake in the Cd‐contaminated soil by the plants [ 128 ].…”

Section: Tio 2 Nps In Environmental Remediationmentioning

confidence: 99%

Diverse biotechnological applications of multifunctional titanium dioxide nanoparticles: An up‐to‐date review

Javed

Ain

Gul

et al. 2022

IET Nanobiotechnology

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Titanium dioxide (TiO 2 ) nanoparticles (NPs) are one of the topmost widely used metallic oxide nanoparticles. Whether present in naked form or doped with metals or polymers, TiO 2 NPs perform immensely important functions. However, the alteration in size and shape by doping results in improving the physical, chemical, and biological behaviour of TiO 2 NPs. Hence, the differential effects of various TiO 2 nanostructures including nanoflakes, nanoflowers, and nanotubes in various domains of biotechnology have been elucidated by researchers. Recently, the exponential growth of research activities regarding TiO 2 NPs has been observed owing to their chemical stability, low toxicity, and multifaceted properties. Because of their enormous abundance, plants, humans, and environment are inevitably exposed to TiO 2 NPs. These NPs play a significant role in improving agricultural attributes, removing environmental pollution, and upgrading the domain of nanomedicine. Therefore, the currently ongoing studies about the employment of TiO 2 NPs in enhancement of different aspects of agriculture, environment, and medicine have been extensively discussed in this review.

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“…In the case of myco-synthesized TiO 2 NPs (50–100 nm, spherical), the dose of 25–100 mg L −1 could induce only a slight increase in the total chlorophyll content [ 52 ], or a dose-dependent increase [ 53 ]. However, it was reported that at 250 mg kg −1 of chemically synthesized TiO 2 (15–40 nm, spherical), NPs when coupled with Plant Growth Promoting Rhizobacteria (PGPR) saw a 43.27% increase in total chlorophyll [ 54 ]. TiO 2 NPs have excellent photocatalytic properties, and therefore 500 mg L −1 of TiO 2 (2.0−5.0 nm, spherical) in combination with 210.87 mg L −1 of chloroplast, when coupled together to form a hybrid photosynthesis system, exhibited the highest electron transfer rate from PS-II to PS-I [ 55 ].…”

Section: Nanobionics and Modulation Of Photosynthesismentioning

confidence: 99%

Nanobionics in Crop Production: An Emerging Approach to Modulate Plant Functionalities

Ranjan

Rajput

Kumari

et al. 2022

Plants

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The “Zero Hunger” goal is one of the key Sustainable Development Goals (SDGs) of the United Nations. Therefore, improvements in crop production have always been a prime objective to meet the demands of an ever-growing population. In the last decade, studies have acknowledged the role of photosynthesis augmentation and enhancing nutrient use efficiency (NUE) in improving crop production. Recently, the applications of nanobionics in crop production have given hope with their lucrative properties to interact with the biological system. Nanobionics have significantly been effective in modulating the photosynthesis capacity of plants. It is documented that nanobionics could assist plants by acting as an artificial photosynthetic system to improve photosynthetic capacity, electron transfer in the photosystems, and pigment content, and enhance the absorption of light across the UV-visible spectrum. Smart nanocarriers, such as nanobionics, are capable of delivering the active ingredient nanocarrier upon receiving external stimuli. This can markedly improve NUE, reduce wastage, and improve cost effectiveness. Thus, this review emphasizes the application of nanobionics for improving crop yield by the two above-mentioned approaches. Major concerns and future prospects associated with the use of nanobionics are also deliberated concisely.

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Application of titanium dioxide nanoparticles to promote phytoremediation of Cd-polluted soil: contribution of PGPR inoculation

Cited by 50 publications

References 72 publications

The Combined Effect of Pseudomonas stutzeri and Biochar on the Growth Dynamics and Tolerance of Lettuce Plants (Lactuca sativa) to Cadmium Stress

The Combined Effect of Pseudomonas stutzeri and Biochar on the Growth Dynamics and Tolerance of Lettuce Plants (Lactuca sativa) to Cadmium Stress

Diverse biotechnological applications of multifunctional titanium dioxide nanoparticles: An up‐to‐date review

Nanobionics in Crop Production: An Emerging Approach to Modulate Plant Functionalities

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