Mercury resistance and bioremediation mediated by endophytic fungi

Pietro-Souza, William; Pereira, Felipe de Campos; Mello, Ivani Souza; Stachack, Fernando Ferrari Frutuoso; Terezo, Ailton José; Cunha, Cátia Nunes da; White, James F.; Li, Haiyan; Soares, Marcos Antônio

doi:10.1016/j.chemosphere.2019.124874

Cited by 87 publications

(33 citation statements)

References 60 publications

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“…It was evidenced that many identified endophytic strains could be applicable for either bioremediation and/or biotransformation processes ( Table 3). The most effective strains for bioremediation are bacterial representatives of the following genera: Pseudomonas, Bacillus, Pantoea, Streptomyces, Klebsiella, Shewanella, Burkholderia, and Sphingomonas [110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128], fungal endophytes: Lasiodiplodia, Aspergillus, Curvularia, Westerdykella, and representatives of Lindgomycetaceae [111,121,125]. However, their application depends on the contaminants and their metabolic functions ( Table 3).…”

Section: Application Of Endophytes For Bioremediation Biotransformatmentioning

confidence: 99%

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Agricultural and Other Biotechnological Applications Resulting from Trophic Plant-Endophyte Interactions

2019

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Endophytic microbiota plays a role not only in supplying plants with the basic nutrients indispensable for their growth, but also helps them in the mechanisms of adaptation to various environmental stresses (i.e., salinity, drought), which is important in the aspect of crop yields. From the agricultural and biotechnological points of view, the knowledge of endophytes and their roles in increasing crop yields, plant resistance to diseases, and helping to survive environmental stress is extremely desirable. This paper reviews some of the beneficial plant–microbe interactions that might be potentially used in both agriculture (plant growth stimulation effect, adaptation of host organisms in salinity and drought conditions, and support of defense mechanisms in plants), and in biotechnology (bioactive metabolites, application of endophytes for bioremediation and biotransformation processes, and production of biofertilizers and biopreparations). Importantly, relatively recent reports on endophytes from the last 10 years are summarized in this paper.

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Section: Application Of Endophytes For Bioremediation Biotransformatmentioning

confidence: 99%

“…Reduction of mercury concentrations in soil by bioaccumulation [111] Bacillus megaterium BM18-2 Cd removal [112] Pantoea dispersa Bisphenol A (BPA) removal [113] Bacillus safensis strain ZY16 Degradation of C12-C32 n-alkanes from diesel oil [114] Pseudomonas sp. Hydrocarbon degradation [115] Streptomyces sp.…”

Section: Bioremediationmentioning

confidence: 99%

Agricultural and Other Biotechnological Applications Resulting from Trophic Plant-Endophyte Interactions

2019

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“…They can be used for selective antibiotic delivery—a Trojan horse strategy by formation of sideromycins, useful in treating antibiotic-resistant bacteria—or used to treat acute iron intoxications such as haemochromatosis. They are also useful in the treatment of malaria and in the removal of transuranic elements such as aluminium and vanadium from human body [ 12 , 13 ], as deodorant in cosmetics, in cancer therapy [ 14 ], as bio-control agents against fish pathogens [ 15 ], documented bio-control agents against bacterial and fungal phytopathogens [ 7 , 8 , 16 ], in pulp treatment [ 17 ], bioremediation of mercury [ 18 ], to solubilize a varied array of heavy metals such as Cd, Zn, Ni, Cu, Pb and actinides like Pu, Th and U produced in industries, nuclear power stations and mining [ 19 , 20 ]. Siderophores are also reported to diminish oxidative stress in microorganisms [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Detection and Characterization of Antibacterial Siderophores Secreted by Endophytic Fungi from Cymbidium aloifolium

et al. 2020

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Endophytic fungi from orchid plants are reported to secrete secondary metabolites which include bioactive antimicrobial siderophores. In this study endophytic fungi capable of secreting siderophores were isolated from Cymbidium aloifolium, a medicinal orchid plant. The isolated extracellular siderophores from orchidaceous fungi act as chelating agents forming soluble complexes with Fe3+. The 60% endophytic fungi of Cymbidium aloifolium produced hydroxamate siderophore on CAS agar. The highest siderophore percentage was 57% in Penicillium chrysogenum (CAL1), 49% in Aspergillus sydowii (CAR12), 46% in Aspergillus terreus (CAR14) by CAS liquid assay. The optimum culture parameters for siderophore production were 30 °C, pH 6.5, maltose and ammonium nitrate and the highest resulting siderophore content was 73% in P. chrysogenum. The total protein content of solvent-purified siderophore increased four-fold compared with crude filtrate. The percent Fe3+ scavenged was detected by atomic absorption spectra analysis and the highest scavenging value was 83% by P. chrysogenum. Thin layer chromatography of purified P. chrysogenum siderophore showed a wine-colored spot with Rf value of 0.54. HPLC peaks with Rts of 10.5 and 12.5 min were obtained for iron-free and iron-bound P. chrysogenum siderophore, respectively. The iron-free P. chrysogenum siderophore revealed an exact mass-to-charge ratio (m/z) of 400.46 and iron-bound P. chrysogenum siderophore revealed a m/z of 453.35. The solvent-extracted siderophores inhibited the virulent plant pathogens Ralstonia solanacearum, that causes bacterial wilt in groundnut and Xanthomonas oryzae pv. oryzae which causes bacterial blight disease in rice. Thus, bioactive siderophore-producing endophytic P. chrysogenum can be exploited in the form of formulations for development of resistance against other phytopathogens in crop plants.

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“…A31, Curvularia geniculata P1, Lindgomycetaceae P87, and Westerdykella sp. P71 on maize and Aeschynomene fluminensis [112].…”

Section: Bioremediatorsmentioning

confidence: 99%

Endophytes Potential Use in Crop Production

Tonial¹,

Nava²,

Gayger³

et al. 2020

Sustainable Crop Production

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The endophytic microorganisms have the potential to improve the yield of agricultural crops. They can be used as biological control, plant growth promoter, or bioremediators. The action of endophytes in controlling phytopathogens, insects, and weeds that harm agriculture may be the result of microbial interactions with other organisms or the production of bioactive metabolites. Also, microorganisms can have the ability to favor plant growth and convert toxic compounds present in the soil. The presence of pollutants in the substrate reduces its quality for plant development, so bioremediation also impacts agricultural production. Therefore, prospecting endophytic microorganisms with agronomic potential may provide sustainable alternatives to increase crop yield.

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Mercury resistance and bioremediation mediated by endophytic fungi

Cited by 87 publications

References 60 publications

Agricultural and Other Biotechnological Applications Resulting from Trophic Plant-Endophyte Interactions

Agricultural and Other Biotechnological Applications Resulting from Trophic Plant-Endophyte Interactions

Detection and Characterization of Antibacterial Siderophores Secreted by Endophytic Fungi from Cymbidium aloifolium

Endophytes Potential Use in Crop Production

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