Recovering Soils Affected by Iron Mining Tailing Using Herbaceous Species with Mycorrhizal Inoculation

Zanchi, Carin Sgobi; Batista, Éder Rodrigues; Silva, Aline Oliveira; Barbosa, Marisângela Viana; Pinto, Flávio Araújo; Santos, Jessé Valentim dos

doi:10.1007/s11270-021-05061-y

Cited by 17 publications

(5 citation statements)

References 63 publications

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“…Detection of Fe in the spores developed under Fe toxicity agrees with previous observations for other metals, such as Cu, Zn and Cd [ 73 , 74 , 75 ], and supports the hypothesis that a survival strategy of AM fungi in metal-contaminated environments is to accumulate the excess metal in some spores of the fungal colony. Iron accumulation in the fungus will reduce plant Fe availability, which will explain, at least partially, the improved performance of mycorrhizal plants, in soils affected by iron mining tailing [ 76 , 77 ].…”

Section: Discussionmentioning

confidence: 99%

Characterization of the NRAMP Gene Family in the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis

López-Lorca¹,

Molina-Luzón²,

Ferrol³

2022

JoF

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Transporters of the NRAMP family are ubiquitous metal-transition transporters, playing a key role in metal homeostasis, especially in Mn and Fe homeostasis. In this work, we report the characterization of the NRAMP family members (RiSMF1, RiSMF2, RiSMF3.1 and RiSMF3.2) of the arbuscular mycorrhizal (AM) fungus Rhizophagus irregularis. Phylogenetic analysis of the NRAMP sequences of different AM fungi showed that they are classified in two groups, which probably diverged early in their evolution. Functional analyses in yeast revealed that RiSMF3.2 encodes a protein mediating Mn and Fe transport from the environment. Gene-expression analyses by RT-qPCR showed that the RiSMF genes are differentially expressed in the extraradical (ERM) and intraradical (IRM) mycelium and differentially regulated by Mn and Fe availability. Mn starvation decreased RiSMF1 transcript levels in the ERM but increased RiSMF3.1 expression in the IRM. In the ERM, RiSMF1 expression was up-regulated by Fe deficiency, suggesting a role for its encoded protein in Fe-deficiency alleviation. Expression of RiSMF3.2 in the ERM was up-regulated at the early stages of Fe toxicity but down-regulated at later stages. These data suggest a role for RiSMF3.2 not only in Fe transport but also as a sensor of high external-Fe concentrations. Both Mn- and Fe-deficient conditions affected ERM development. While Mn deficiency increased hyphal length, Fe deficiency reduced sporulation.

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Section: Discussionmentioning

confidence: 99%

Characterization of the NRAMP Gene Family in the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis

López-Lorca¹,

Molina-Luzón²,

Ferrol³

2022

JoF

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“…This confirms our fourth hypothesis; however, greater richness was not always represented an increase in the PSF. This can be explained by some species were not always associated with increased plant response, such as Acaulospora morrowiae (Zanchi et al, 2021), or by species that may be useful for biological control such as Entrophospora infrequens in soybean attacked by bacterial pathogens (Malik et al, 2016). Despite these changes in AMF communities, the intensity of PSF varied according to the origin of the inoculant.…”

Section: Discussionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi communities shaped by host‐plant affect the outcome of plant–soil feedback in dryland restoration

Medeiros

Scaloppi

Damasceno

et al. 2022

Journal of Applied Ecology

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Plant inoculation with arbuscular mycorrhizal fungi (AMF) can be a useful tool to overcome challenges in dry forest restoration. However, advances are still needed to guide choices regarding soil origin and inoculum production methods, since outcomes can vary due to plant–soil feedbacks (PSF). We evaluate how soil origin and host plant used for inoculum production affect AMF community and therefore the plant biomass accumulation and functional traits. In the conditioning phase, we investigated whether soils originating from a recovered area (Quarry) and a vegetation fragment (Caatinga) would have their AMF communities modified due to the growth of Sorghum bicolor (used for inoculum production) and Senna uniflora (used in Brazilian semiarid restoration). In the feedback phase, we compared the performance of four plants species growing on a degraded soil and inoculated or not by a mixture of AMF isolates in comparison to soil inoculum prepared from the conditioning phase. The inoculum from Caatinga presented seven times more AMF species compared to that from the Quarry, which presented ruderal and stress tolerant species. The soil inoculum conditioned by S. uniflora, regardless of origin, presented greater evenness compared to the soil inoculum produced with S. bicolor and promoted 33% more plant biomass compared to the control without inoculation. Root colonization by AMF increased PSF and decreased plant investment in functional traits such as specific root length (SRL) and specific leaf area (SLA). Our results demonstrate the importance of adopting strategies that preserve local adaptation of inoculants produced. The use of native plant for propagation of native AMF in the conditioning phase provided more positive responses for Mesosphaerum suaveolens and Rhaphiodon echinus than inoculated with introduced AMF isolates. This is probably due to the interaction of inoculated plants with responsive AMF present in the soil. Synthesis and applications. Our study shows that conditioning field‐collected soil with Senna uniflora and using it for inoculation can be a simple technique to promote biomass accumulation for other native herbaceous species. This preserves the compatibility between the soil inoculum produced with native AMF and native plants, representing an important tool for restoration programs.

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“…It was found that AMF is correlated with the pH, organic matter, and total phosphorus content of the matrix, AMF increased nitrogen, phosphorous and potassium uptake by the plants in the studies on AMF inoculation in gold mine tailings [67,78,79]. Studies of iron mine tailings indicated that inoculation with AMF could effectively increase the activity of acid phosphatase in the rhizosphere of plants, enhance the utilization of nitrogen, phosphorus, and potassium; and significantly reduce the heavy-metal content in plant stems and leaves in tailings by plants, and increase the biomass of plants [69,70,80]. In addition, inoculation of AMF in Pb-Zn tailings increased aboveground and root biomass by 196% and 263%, respectively [23]; effectively contributed to the utilization of phosphorus by plants [71], decreased the available metals in soils and reduced metals translocation to shoots [51].…”

Section: Application Of Amf Symbionts In the Ecological Remediation O...mentioning

confidence: 99%

Research Progress and Potential Functions of AMF and GRSP in the Ecological Remediation of Metal Tailings

Yang

et al. 2022

Sustainability

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Metal mining generates a considerable amount of tailings. Arbuscular mycorrhizal fungi (AMF) have potential value for the ecological remediation of tailings from metal mining, despite problems with these tailings, such as loose structure, high heavy-metal concentration and low organic matter and microbial diversity. This review summarizes both the application and physiological functions of AMF, and plant symbiotic systems, in the ecological remediation of tailings from metal mining. The review also includes an in-depth analysis of the characteristics, structural composition, and potential functions of glomalin-related soil protein (GRSP), a release product of mycorrhizal fungi, in the ecological remediation of tailings from metal mining. This review is expected to provide a basis for the application of arbuscular mycorrhizal fungi remediation technology in the ecological remediation of tailings from metal mining.

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Recovering Soils Affected by Iron Mining Tailing Using Herbaceous Species with Mycorrhizal Inoculation

Cited by 17 publications

References 63 publications

Characterization of the NRAMP Gene Family in the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis

Characterization of the NRAMP Gene Family in the Arbuscular Mycorrhizal Fungus Rhizophagus irregularis

Arbuscular mycorrhizal fungi communities shaped by host‐plant affect the outcome of plant–soil feedback in dryland restoration

Research Progress and Potential Functions of AMF and GRSP in the Ecological Remediation of Metal Tailings

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