Toxicity of metal cations and phenolic compounds to the bioluminescent fungus Neonothopanus gardneri

Ventura, Fernanda F.; Soares, Douglas M. M.; Bayle, Kevin; Oliveira, Adriana Gonçalves; Bechara, Etelvino J.H.; Freire, Renato S.; Stevani, Cassius V.

doi:10.1016/j.envadv.2021.100044

Cited by 10 publications

(3 citation statements)

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“…(piassava) (Capelari et al, 2011;Vieira et al, 2022). Ventura et al (2021) found that N. gardneri has a predictable bioluminescence and growth pattern and is highly sensitive to Cd(II), 4-nitrophenol, phenol, and Cu(II) compounds. These characteristics may offer valuable advantages to plants, which, when receiving "signs" of the presence of toxic products in the environment, can somehow create defense mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Chemical constituents and antifungal potential of Attalea geraensis Barb. Rodr. (Arecaceae) palm leaves, a species native to the Cerrado of Brazil

et al. 2023

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Fungal diseases, especially those that affect the root systems of plants, caused by Rhizoctonia and Macrophomina are limiting factors for achieving high crop yields. Alternatives to controlling fungi with chemical products drive the search for new options for bioactive compounds from plants. Attalea geraensis, a palm tree from the Brazilian Cerrado, is rich in flavonoids with antifungal actions. The objective of this work is to identify the chemical classes present in the ethanolic extract of green leaves of A. geraensis and determine the antifungal potential of the extract against isolates of Macrophomina phaseolina (Tassi) Goid. and Rhizoctonia solani JG Kühn. Phytochemical prospection, flavonoid dereplication, and antifungal activity were carried out of the ethanolic extract of the green leaves of A. geraensis harvested in the Cerrado area of Brazil. Steroids, triterpenes, saponins, and anthraquinones are described here for the first time for the leaves of A. geraensis. The flavonoids quercetin, isorhamnetin, 3,7-dimethylquercetin, quercetin 3-galactoside, 5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-3-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-4H-chromen-4-one, rhamnazin 3-galactoside, keioside, and rhamnazin 3-rutinoside were identified. Of these, only quercetin and isorhamnetin had already been identified in the leaves of A. geraensis. The results show a fungistatic potential for the species. The diversity of flavonoids present in the leaves of A. geraensis may be the result of a synergistic action between fungus and plant or there could be an antagonistic effect between flavonoids and the other identified chemical classes.

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Section: Discussionmentioning

confidence: 99%

Chemical constituents and antifungal potential of Attalea geraensis Barb. Rodr. (Arecaceae) palm leaves, a species native to the Cerrado of Brazil

et al. 2023

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“…Recently, the application of fungi bioluminescence system has been demonstrated to respond, albeit not specifically, to several metal cations such as Cd(II) and Cu(II), and phenolic compounds by bioluminescent basidiomycetes Neonothopanus gardneri, Gerronema viridilucens , Armillaria mellea, and Mycena citricolor ( Weitz et al, 2002 ; Mendes et al, 2010 ; Mendes and Stevani, 2010 ; Stevani et al, 2013 ; Ventura et al, 2020 , 2021 ). In an agar medium, the bioassay with the fungus N. gardneri , which responds in a more sensitive and repeatable way, can be conducted by exposing the mycelium for 30 min or 24 h to an aqueous solution containing the toxicant.…”

Section: Introductionmentioning

confidence: 99%

“…There is evidence that the decrease of light emission in the presence of the toxicant is related to the uncoupling of mitochondrial oxidative phosphorylation, leading to the impairment of ATP biosynthesis ( Ventura et al, 2020 ). Likewise, other bioluminescent microorganisms, like bacteria, respond to toxic substances by decreasing light emission proportionally to concentration of the toxicant ( Hollis et al, 2000 ; Weitz et al, 2002 ; Mendes and Stevani, 2010 ; Ventura et al, 2020 , 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Fungal bioassays for environmental monitoring

Soares

Procópio

Zamuner

et al. 2022

Front. Bioeng. Biotechnol.

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Environmental pollutants are today a major concern and an intensely discussed topic on the global agenda for sustainable development. They include a wide range of organic compounds, such as pharmaceutical waste, pesticides, plastics, and volatile organic compounds that can be found in air, soil, water bodies, sewage, and industrial wastewater. In addition to impacting fauna, flora, and fungi, skin absorption, inhalation, and ingestion of some pollutants can also negatively affect human health. Fungi play a crucial role in the decomposition and cycle of natural and synthetic substances. They exhibit a variety of growth, metabolic, morphological, and reproductive strategies and can be found in association with animals, plants, algae, and cyanobacteria. There are fungal strains that occur naturally in soil, sediment, and water that have inherent abilities to survive with contaminants, making the organism important for bioassay applications. In this context, we reviewed the applications of fungal-based bioassays as a versatile tool for environmental monitoring.

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