Phytoremediation and Fungi: An Underexplored Binomial

Otero-Blanca, Adriana; Folch-Mallol, Jorge Luis; Lira-Ruan, Verónica; Carbente, María del Rayo Sánchez; Batista-García, Ramón Alberto

doi:10.1007/978-3-030-02369-0_5

Cited by 10 publications

(9 citation statements)

References 65 publications

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“…Recent approaches to the optimization of phytoextraction systems noted the importance of cooperation between hyperaccumulators and microorganisms that show plant growth-promoting activity and/or metal tolerance and accumulation (Khan, 2005). Among these microorganisms, plant growth-promoting rhizobacteria (Hansda et al, 2014) and endophytic bacteria (Ma et al, 2016), arbuscular mycorrhizal fungi (Miransari, 2017), ectomycorrhizal fungi (Gil-Martínez et al, 2018) and dark septate endophytes (DSEs) (Deng and Cao, 2017) are known as major drivers of plant growth and tolerance to abiotic stress and resistance to phytopathogens (Kong and Glick, 2017;Otero-Blanca et al, 2018). The positive effects of these strains on plant growth and metal bioavailability can markedly improve metal accumulation in plant tissues, thus positively influencing phytoextraction at metal-polluted sites (Ma et al, 2019;Phanthavongsa et al, 2017;Rajkumar et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Dark septate endophytes isolated from non-hyperaccumulator plants can increase phytoextraction of Cd and Zn by the hyperaccumulator Noccaea caerulescens

Yung

Blaudez

Maurice

et al. 2021

Environ Sci Pollut Res

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Dark septate endophytes (DSEs) can improve plant stress tolerance by promoting growth and affecting element accumulation. Due to its ability to accumulate high Cd, Zn and Ni concentrations in its shoots, Noccaea caerulescens is considered a promising candidate for phytoextraction in the field. However, the ability of DSEs to improve trace element (TE) phytoextraction with N. caerulescens has not yet been studied. The aim of this study was therefore to determine the ability of five DSE strains, previously isolated from poplar roots collected at different TE-contaminated sites, to improve plant development, mineral nutrient status and metal accumulation by N. caerulescens during a pot experiment using two soils differing in their level of TE contamination. Microscopic observations revealed that the tested DSE strains effectively colonized the roots of N. caerulescens. In the highly contaminated (HC) soil, a threefold increase in root biomass was found in plants inoculated with the Leptodontidium sp. Pr30 strain compared to that in the non-inoculated condition; however, the plant nutrient status was not affected. In contrast, the two strains Phialophora mustea Pr27 and Leptodontidium sp. Me07 had positive effects on the mineral nutrient status of plants without significantly modifying their biomass. Compared to non-inoculated plants cultivated on HC soil, Pr27-and Pr30-inoculated plants extracted more Zn (+30%) and Cd (+90%), respectively. In conclusion, we demonstrated that the responses of N. caerulescens to DSE inoculation ranged from neutral to beneficial and we identified two strains (i.e., Leptodontidium sp. (Pr30) and Phialophora mustea (Pr27)) isolated from poplar that appeared promising as they increased the amounts of Zn and Cd extracted by improving plant growth and/or TE accumulation by N. caerulescens. These results generate interest in further characterizing the DSEs that naturally colonize N. caerulescens and testing their ability to improve phytoextraction.

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Section: Introductionmentioning

confidence: 99%

Dark septate endophytes isolated from non-hyperaccumulator plants can increase phytoextraction of Cd and Zn by the hyperaccumulator Noccaea caerulescens

Yung

Blaudez

Maurice

et al. 2021

Environ Sci Pollut Res

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“…Mycorrhizoremediation is one of the most innovative methods that have been recently identified as enhanced forms of phytoremediation [ 15 ]. This method relies upon plant–fungal interactions to improve the tolerance and growth of plants in contaminated soils.…”

Section: Introductionmentioning

confidence: 99%

“…To facilitate the development of this mycophytoremediation technology, Otero-Blanca et al [ 15 ] recommended the use of free-living fungi. Thus, the use of mycorrhizal seedlings with locally adapted fungi and tree species would appear crucial to improving the survival and growth of seedlings under different stressful site conditions.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ectomycorrhizal Fungi and Heavy Metals (Pb, Zn, and Cd) on Growth and Mineral Nutrition of Pinus halepensis Seedlings in North Africa

et al. 2020

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The pollution of soils by heavy metals resulting from mining activities is one of the major environmental problems in North Africa. Mycorrhizoremediation using mycorrhizal fungi and adapted plant species is emerging as one of the most innovative methods to remediate heavy metal pollution. This study aims to assess the growth and the nutritional status of ectomycorrhizal Pinus halepensis seedlings subjected to high concentrations of Pb, Zn, and Cd for possible integration in the restoration of heavy metals contaminated sites. Ectomycorrhizal and non-ectomycorrhizal P. halepensis seedlings were grown in uncontaminated (control) and contaminated soils for 12 months. Growth, mineral nutrition, and heavy metal content were assessed. Results showed that ectomycorrhizae significantly improved shoot and roots dry masses of P. halepensis seedlings, as well as nitrogen shoot content. The absorption of Pb, Zn, and Cd was much higher in the roots than in the shoots, and significantly more pronounced in ectomycorrhizal seedlings—especially for Zn and Cd. The presence of ectomycorrhizae significantly reduced the translocation factor of Zn and Cd and bioaccumulation factor of Pb and Cd, which enhanced the phytostabilizing potential of P. halepensis seedlings. These results support the use of ectomycorrhizal P. halepensis in the remediation of heavy metal contaminated sites.

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“…Following the 2010 Deepwater Horizon oil spill, fungal strains from oil-soaked sand patties collected from beaches [41] and bacteria from oiled beach sands at Pensacola Beach, FL, USA [42], both sites located in the American EEZ, were identified as potential bioremediation microorganisms. Fungi synthesize a battery of enzymes, including laccases, peroxidases, lytic polysaccharide monooxygenases, and monooxygenase cytochrome P450 that degrade different and complex substrates, including PAHs [43,44]. In addition, isolates from extreme environments have been proven to produce extracellular extremophilic ligninolytic enzymes, which can perform catalytic activities under adverse environments without being denatured [45].…”

Section: Discussionmentioning

confidence: 99%

Extra-Heavy Crude Oil Degradation by Alternaria sp. Isolated from Deep-Sea Sediments of the Gulf of Mexico

et al. 2021

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The Gulf of Mexico (GoM) is an important source of oil for the United States and Mexico. There has been growing interest, particularly after the Deepwater Horizon oil spill, in characterizing the fungal diversity of the GoM and identifying isolates for use in the bioremediation of petroleum in the event of another spill. Most studies have focused on light crude oil bioremediation processes, while heavy crude oil (HCO) and extra-heavy crude oil (EHCO) have been largely ignored. In this work, we evaluated the ability of fungal isolates obtained from deep-sea sediments of the Mexican economic exclusive zone (EEZ) of the GoM to degrade HCO (16–20° API) and EHCO (7–10° API). Alternaria sp., Penicillium spp., and Stemphylium sp. grew with HCO as the sole carbon source. Remarkably, Alternaria sp. was the only isolate able to grow with EHCO as the sole carbon source, degrading up to 25.6% of the total EHCO and 91.3% of the aromatic fraction, as demonstrated by gas chromatography analysis of the saturate, aromatic, and polar fractions. These findings proved to be significant, identifying Alternaria sp. as one of the few fungi reported so far capable of degrading untreated EHCO and as a suitable candidate for bioremediation of EHCO in future studies.

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Phytoremediation and Fungi: An Underexplored Binomial

Cited by 10 publications

References 65 publications

Dark septate endophytes isolated from non-hyperaccumulator plants can increase phytoextraction of Cd and Zn by the hyperaccumulator Noccaea caerulescens

Dark septate endophytes isolated from non-hyperaccumulator plants can increase phytoextraction of Cd and Zn by the hyperaccumulator Noccaea caerulescens

Effects of Ectomycorrhizal Fungi and Heavy Metals (Pb, Zn, and Cd) on Growth and Mineral Nutrition of Pinus halepensis Seedlings in North Africa

Extra-Heavy Crude Oil Degradation by Alternaria sp. Isolated from Deep-Sea Sediments of the Gulf of Mexico

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