Arbuscular Mycorrhizal Fungi Alleviate the Negative Effects of Iron Oxide Nanoparticles on Bacterial Community in Rhizospheric Soils

Cao, Jianhua; Feng, Youzhi; Lin, Xiangui; Wang, Junhua

doi:10.3389/fenvs.2016.00010

Cited by 46 publications

(14 citation statements)

References 55 publications

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“…Other than conferring protective effects to host plants against NP toxicity, AM fungi were shown to alleviate the toxic effects of NPs on other soil biota. No significant changes in the relative abundance of Planctomycea, Sphingobacteria, Chloracidobacteria, Acidobacteria and Actinobacteria were found under a toxic concentration of Fe 3 O 4 NPs in plants colonized by AM fungi, whereas these bacterial taxa were altered in non-mycorrhizal plants (Cao et al, 2016). Moreover, the relative abundance of Nitrospira (nitrite-oxidizing bacteria) and Anaerolineae (organic matter-decomposing bacteria) increased significantly by AM symbiosis compared to non-mycorrhizal plants under Fe 3 O 4 NPs treatment, which can potentially contribute to N and C cycling in soil, respectively.…”

Section: Benefits Of Mycorrhizal and Rhizobial Symbioses For Plants Ementioning

confidence: 99%

Are Nanoparticles a Threat to Mycorrhizal and Rhizobial Symbioses? A Critical Review

2019

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Soil microorganisms can be exposed to, and affected by, nanoparticles (NPs) that are either purposely released into the environment (e.g., nanoagrochemicals and NP-containing amendments) or reach soil as nanomaterial contaminants. It is crucial to evaluate the potential impact of NPs on key plant-microbe symbioses such as mycorrhizas and rhizobia, which are vital for health, functioning and sustainability of both natural and agricultural ecosystems. Our critical review of the literature indicates that NPs may have neutral, negative, or positive effects on development of mycorrhizal and rhizobial symbioses. The net effect of NPs on mycorrhizal development is driven by various factors including NPs type, speciation, size, concentration, fungal species, and soil physicochemical properties. As expected for potentially toxic substances, NPs concentration was found to be the most critical factor determining the toxicity of NPs against mycorrhizas, as even less toxic NPs such as ZnO NPs can be inhibitory at high concentrations, and highly toxic NPs such as Ag NPs can be stimulatory at low concentrations. Likewise, rhizobia show differential responses to NPs depending on the NPs concentration and the properties of NPs, rhizobia, and growth substrate, however, most rhizobial studies have been conducted in soil-less media, and the documented effects cannot be simply interpreted within soil systems in which complex interactions occur. Overall, most studies indicating adverse effects of NPs on mycorrhizas and rhizobia have been performed using either unrealistically high NP concentrations that are unlikely to occur in soil, or simple soil-less media (e.g., hydroponic cultures) that provide limited information about the processes occurring in the real environment/agrosystems. To safeguard these ecologically paramount associations, along with other ecotoxicological considerations, large-scale application of NPs in farming systems should be preceded by long-term field trials and requires an appropriate application rate and comprehensive (preferably case-specific) assessment of the context parameters i.e., the properties of NPs, microbial symbionts, and soil. Directions and priorities for future research are proposed based on the gaps and experimental restrictions identified.

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Section: Benefits Of Mycorrhizal and Rhizobial Symbioses For Plants Ementioning

confidence: 99%

Are Nanoparticles a Threat to Mycorrhizal and Rhizobial Symbioses? A Critical Review

2019

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“…On the other hand, the adverse effects of ENP in the association between plants and microorganisms have been reported (Rajput et al, ). Cao et al () demonstrated that the ENP of Fe 3 O 4 at concentrations of 0.1, 1.0, or 10.0 mg kg −1 in corn plants, significantly decreased the abundance and change in the composition of the arbuscular mycorrhizal fungi (HMA) and gave negative responses associated with the decrease of the contents of dissolved organic carbon (COD). Something similar was observed when a concentration of 100 mg kg −1 of Ag NPs decreased the bacterial community in the rhizosphere, but the corn plant biomass significantly increased (Sillen et al, ).…”

Section: Resultsmentioning

confidence: 99%

“…In agriculture, ENP have been designed for reducing the population of arthropods or pathogens (Dubey & Mailapalli, 2016), increasing the control of diseases or weeds (Duhan et al, 2017), or improving the growth rates of crops with environmental benefits or economic profits (Liu, Zhang, & Lal, 2016). In contrast, it has also been discussed the adverse effects of ENP on soil organ-isms´diversity and abundance Wang, Shu, Zhang, & Youbin, 2017 such as fungus (Duhan et al, 2017), collembola (McKee et al, 2017Sillapawattana, Gruhlke, & Schäffer, 2016;Topuz & van Gestel, 2017), isopods (Malev et al, 2017), annelids (Brami, Glover, Butt, & Lowe, 2017;Jesmer, Velicogna, Schwertfeger, Scroggins, & Princz, 2017;Patricia et al, 2017;Romero-Freire, Lofts, Peinado, & van Gestel, 2017), as well as on the symbiotic association of bacteria and plants (Cao, Fen, Lin, & Wang, 2016). The toxic effects of ENP regarding their bioaccumulation and persistence have also been reported on organisms of different trophic levels (Chae, Kim, & An, 2016).…”

mentioning

confidence: 99%

Effect of engineered nanoparticles on soil biota: Do they improve the soil quality and crop production or jeopardize them?

et al. 2020

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Nanoscience and nanotechnology have been shown to have the capacity to help study, manipulation,design, and synthesis of new nano-sized materials to manufacture new products with desirable features never seen before. The unique properties of materials at nanoscale opens an excellent possibility for nanotechnology to be used in soil environmental remediation, and water, and air decontamination. In crop management, nanomaterials are used to regulate the controlled release of nutrients, fertilizers, and pesticides. However, it is not only necessary to expose the positive effects by the application of the nanomaterials but also to demonstrate the impacts on soil and nontarget organisms (plants, mesofauna, macrofauna, and soil microbiota). In this context, pieces of evidence on the adverse effects of engineered nanoparticles (ENP) on the physicochemical and biological properties of soils are discussed in this paper. We have found a diversity of contradictory results. The summaries, findings, and conclusions of most of the investigations support the need to understand the biological or physicochemical transformation and transport of ENP in soil, and in the plant-organism relationship. Better understanding regarding the soil biota coupled with the ecological ENP behavior could ensure the safe use of ENP. Nanomaterials can change the physicochemical and biological properties of the soils; consequently, long-term in situ field trials are required, and meanwhile, land-application of nanomaterials should be limited to scientific experiments to fill knowledge gaps to not jeopardize the global food production or the environment and worldwide human health.

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“…niger, Pseudomonas fluorescens (Diao&Yao, 2009), Pseudomonas aeruginosa (Kafayati et al, 2013), Erwinia amylovora, Xanthomonas oryzae, Bacillus cereus and Streptomyces spp. (Barzan et al, 2014) and in some cases on compositional structure and functional capacity of the soil microbial community (Pawlett et al, 2013;Cao et al, 2016). In all cases, the concentration and size of nanoparticles played an important role.…”

Section: Introductionmentioning

confidence: 96%

“…The authors have shown that even when the fungal culture was treated with a relatively high concentration of nZVI, the effect on its viability was zero. Regarding indirect effects of iron nanoparticles, there are researches that demonstrate that the adverse effects of Fe 3 O 4 nanoparticles on the soil bacterial community were altered by arbuscular mycorrhizal fungi (Cao et al, 2016). Although there are many researches on the effects of iron nanoparticles on microorganisms and their mechanism of action, it is important to study their influence on several microorganisms' strains in order to fill gaps in our knowledge.…”

Section: Introductionmentioning

confidence: 99%

Effect of Trifluralin, Zero-Valent Iron and Magnetite Nanoparticles on Growth of Micromycetes

Josan

Rastimesina

Postolachi

et al. 2018

“Agriculture for Life, Life for Agriculture” Conference Proceedings

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Nowadays many reports confirmed the effect of different nanoparticles (NPs) on the growth and secondary metabolite production in various microorganisms. Some of them, NPs like Ag, Au and oxides of Al, Ti, Si and Zn have harmful effect on the cells of microorganisms. Iron NPs are expected to be nontoxic, due to using Fe atom in several pathways of cell metabolism and, therefore, low iron toxicity. The use of iron NPs in technologies for remedying polluted environment was caused by their efficiency in reduction reactions, mobility, and high reactivity, due to the high surface area. The present study aims to determine the effect of magnetite (Fe3O4), zero-valent iron Fe(0) NPs, and fluorinated dinitroaniline herbicide trifluralin on growth of mycelial fungi. Fungal strains were isolated from soil long-term polluted with obsolete pesticides, DDT and trifluralin. The inhibition activity of iron NPs and trifluralin was evaluated using express-method. Each fungal strain had an individual reaction to the solutions of iron nanoparticles. At the same time, Fe(0) NPs, as well as magnetite NPs, had a stimulating effect on the formation and maturation of spores of micromycetes. Addition of trifluralin to the culture medium had a growth inhibition effect on micromycetes, but this effect was reduced, when trifluralin was mixed and incubated with iron NPs for 1 hour before.

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Arbuscular Mycorrhizal Fungi Alleviate the Negative Effects of Iron Oxide Nanoparticles on Bacterial Community in Rhizospheric Soils

Cited by 46 publications

References 55 publications

Are Nanoparticles a Threat to Mycorrhizal and Rhizobial Symbioses? A Critical Review

Are Nanoparticles a Threat to Mycorrhizal and Rhizobial Symbioses? A Critical Review

Effect of engineered nanoparticles on soil biota: Do they improve the soil quality and crop production or jeopardize them?

Effect of Trifluralin, Zero-Valent Iron and Magnetite Nanoparticles on Growth of Micromycetes

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