Potential for Mycorrhizae-Assisted Phytoremediation of Phosphorus for Improved Water Quality

Rubin, Jessica A.; Görres, Josef H.

doi:10.3390/ijerph18010007

Cited by 18 publications

(12 citation statements)

References 185 publications

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“…For example, in VRBs, several woody species can be coppiced, though little is known about how they differ, in their ability to store and remobilize P (Netzer et al, 2018). Adding to the uncertainty of P's fate in VRBs is the lack of knowledge on mycorrhizae's efficacy in P mitigation when associated with woody plants (Rubin & Görres, 2021) as well as in soils of varying P concentrations. Studies on mycorrhizal benefits to woody buffer vegetation are urgently needed (Johnson & Graham, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of mycorrhizae, plants, and soils on phosphorus leaching and plant uptake: Lessons learned from a mesocosm study

Rubin

Görres

2022

Plants People Planet

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Societal Impact Statement Worldwide, farmers struggle to find the most efficacious practices which balance crop fertility needs and water quality protection. Through a greenhouse experiment, we investigated how soil status (high vs. low phosphorus [P] concentration), mycorrhizae (inoculated vs. not), and plant species (dogwood vs. willow) affected P plant uptake and leaching. We found mycorrhizae did not affect uptake or leaching, more P was leached from high than low P soil, dogwood uptook yet leached more P, and above ground biomass at the end of summer contained more P than roots. This study provides insights to be considered by researchers and practitioners who implement best management practices for water quality. Summary This research examined the effects of mycorrhizal inoculation in high and low phosphorus saturation soils on phosphorus uptake by Cornus sericea and Salix niger. The aim was to identify practices that improved water quality functions of riparian buffers to protect surface waters impacted by eutrophication. A mesocosm experiment arranged as a random block design was conducted with mycorrhizal presence, soil phosphorus saturation status, and plant species as factors. Leachate, plant uptake, and soil phosphorus were measured to assess the effects. Greater leachate and uptake of phosphorus were detected for C. sericea than for S. niger. Mycorrhizae had no effects on leaching nor on uptake of phosphorus in this experiment. High phosphorus saturated soils had greater leaching and uptake than the low phosphorus soils. Above ground biomass contained more phosphorus than below ground biomass in both species at time of harvest. Estimations of phosphorus removal through coppicing suggest a very slow removal rate in biodiverse multi‐functional riparian buffers. Our results suggest that cyclical coppicing can be an improvement to Best Management Practices. Diverse riparian buffers are limited in the amount of phosphorus that they can store and mitigate, even with coppicing. The emphasis therefore should be on agricultural best management practices that reduce phosphorus export from upland fields. Further studies in phosphorus accumulating plant species with appropriate mycorrhizal symbionts are needed.

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Section: Introductionmentioning

confidence: 99%

Effects of mycorrhizae, plants, and soils on phosphorus leaching and plant uptake: Lessons learned from a mesocosm study

Rubin

Görres

2022

Plants People Planet

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“…Further, soil microorganisms that form a symbiotic association with host plants are the most successful species in the soil reclamation process. The mycorrhizal fungi form intimate symbiotic relationship with host plants, which have been applied in many bioremediation processes ( Yang et al, 2015 ; Gunathilakae et al, 2018 ; González-Chávez et al, 2019 ; Rubin and Görres, 2021 ). The arbuscular mycorrhizae as the most well-known symbiotic fungi are frequently used in phytoremediation due to their ubiquity in soil.…”

Section: Plant–microbe Associated Remediationmentioning

confidence: 99%

Recent Developments in Microbe–Plant-Based Bioremediation for Tackling Heavy Metal-Polluted Soils

et al. 2021

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Soil contamination with heavy metals (HMs) is a serious concern for the developing world due to its non-biodegradability and significant potential to damage the ecosystem and associated services. Rapid industrialization and activities such as mining, manufacturing, and construction are generating a huge quantity of toxic waste which causes environmental hazards. There are various traditional physicochemical techniques such as electro-remediation, immobilization, stabilization, and chemical reduction to clean the contaminants from the soil. However, these methods require high energy, trained manpower, and hazardous chemicals make these techniques costly and non-environment friendly. Bioremediation, which includes microorganism-based, plant-based, microorganism-plant associated, and other innovative methods, is employed to restore the contaminated soils. This review covers some new aspects and dimensions of bioremediation of heavy metal-polluted soils. The bioremediation potential of bacteria and fungi individually and in association with plants has been reviewed and critically examined. It is reported that microbes such as Pseudomonas spp., Bacillus spp., and Aspergillus spp., have high metal tolerance, and bioremediation potential up to 98% both individually and when associated with plants such as Trifolium repens, Helianthus annuus, and Vallisneria denseserrulata. The mechanism of microbe’s detoxification of metals depends upon various aspects which include the internal structure, cell surface properties of microorganisms, and the surrounding environmental conditions have been covered. Further, factors affecting the bioremediation efficiency and their possible solution, along with challenges and future prospects, are also discussed.

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“…To promote plant growth on HM-contaminated soils for higher biomass production, to tolerate HM-induced stress, and to overcome P-deficiency, P-solubilizing bacteria (PSB) as biofertilizer provide an alternative to enhance plant growth on metal-stressed soil through biosynthesising nano molecules such as antibiotics supressing soil phytopathogens (biocontrol), enzymes and siderophores to solubilize P, assisting nano-phytoremediation of metalliferous soils [16][17][18]. Recently Rubin and Gorres [19] reviewed the potential for mycorrhiza assisted phytoremediation by plants to mitigate nutrient pollution in different landscape and land-use contexts for reduced P-fertilizer amendments. The literature surveyed by these authors offers promising insight into how mycorrhizae can assist ecological restoration of derelict soil and water.…”

Section: Role and Significance Of Plants And Their Root Associated Micrbiota In Enhancing Hm-uptakementioning

confidence: 99%

“…Recent interests in NMPR technology is evident by many books, book chapters, review articles and research findings, etc. being published during the last 5 years dedicated to plant-microbe interactions, indicate the significance of the role played by the rhizosphere microbiota assisting nano-remediation of our resources [19,[58][59][60][61][62][63].…”

Section: Concluding Remarks and Major Challengesmentioning

confidence: 99%

Potential of Coupling Heavy Metal (HM) Phytoremediation by Bioenergy Plants and Their Associated HM-Adapted Rhizosphere Microbiota (Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Microbes) for Bioenergy Production

Khan¹

2021

JEPT

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There is growing concern for the contamination of our soils and waters worldwide with heavy metals (HMs), as a result of indiscriminate use of agrochemicals for feeding growing population which require optimal use of resources and sustainable agricultural strategies. This can be simultaneously achieved by using microbes as bio-fertilizers, bio-protectants, and bio-stimulants, and suitable phytoremediation- plant capable of removing heavy metals contaminants from contaminated sites. There is a growing need to adopt such environmentally safe, attractive, and economical techniques that can remove most HMs contaminants as well as yield high biomass for bioenergy production. Phytoremediation and the microbes associated with the roots and inhabiting rhizospheres of the plants used for this purpose, has emerged as an alternative strategy. This article reviews the principles and application of this strategy, and provides an overview of the use of fast growing, non-food bioenergy plants, like Vetiver grass and industrial hemp, and their root-associated microbiota such as Arbuscular Mycorrhizal Fungi (AMF), Mycorrhiza Helping Bacteria (MHB), and Plant–Growth–Promoting-Rhizobia (PGPR) that can both tolerate and immobilize HMs in the roots, i.e. sequestrate contaminant HMs thereby protecting plants from metal toxicity. This mini-review also focuses on other phytoextraction strategies involving rhizosphere microbes, such as (1) inoculating plants used for phytoremediation of HMs contaminated soil and water with rhizobial microflora, and (2) managing their population in the rhizospheres by using a consortium of site specific AMF, PGPR, and MHB, and N-fixing rhizobia as biofertilizers to Phyto-remediate derelict contaminated sites. Various crop management strategies such as Crop Sequencing and Intercropping or Co-cropping of, for example, mycorrhizal and non-mycorrhizal crops, or leguminous and non-leguminous crops, etc., can be employed for improved plant growth. Another possible strategy to exploit soil microbes is to employ pre-cropping with mycotrophic crops to exploit AMF for mycorrhizo-remediation strategy.

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Potential for Mycorrhizae-Assisted Phytoremediation of Phosphorus for Improved Water Quality

Cited by 18 publications

References 185 publications

Effects of mycorrhizae, plants, and soils on phosphorus leaching and plant uptake: Lessons learned from a mesocosm study

Effects of mycorrhizae, plants, and soils on phosphorus leaching and plant uptake: Lessons learned from a mesocosm study

Recent Developments in Microbe–Plant-Based Bioremediation for Tackling Heavy Metal-Polluted Soils

Potential of Coupling Heavy Metal (HM) Phytoremediation by Bioenergy Plants and Their Associated HM-Adapted Rhizosphere Microbiota (Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Microbes) for Bioenergy Production

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