Impacts of the mycotoxin zearalenone on growth and photosynthetic responses in laboratory populations of freshwater macrophytes (Lemna minor) and microalgae (Pseudokirchneriella subcapitata)

Eagles, Emily J.; Benstead, Rachel; MacDonald, Susan; Handy, Richard D.; Hutchinson, Thomas H.

doi:10.1016/j.ecoenv.2018.10.101

Cited by 12 publications

(6 citation statements)

References 40 publications

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“…It is known that some significant mycotoxins play a detrimental role in chloroplast structure and function as well as an induction of ROS accumulation in chloroplasts. The surplus ROS results in the degradation of D1 protein, lipid peroxidation of the thylakoid membrane, and photoinhibition of PSI and PSII (Choudhury and Behera 2001, Edelman and Mattoo 2008, Partelli et al 2011, Chen et al 2012, Pospíšil 2012, Xiang et al 2013, Fagundes-Nacarath et al 2018, Eagles et al 2019, Wang et al 2020. For instance, Eupatorium adenophorum was treated with tenuazonic acid, which caused necrosis on the leaves and induced direct ROS burst in chloroplasts.…”

Section: Introductionmentioning

confidence: 99%

Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants

Iqbal¹,

Czékus²,

Ördög³

et al. 2021

Photosynt.

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yield in the dark-adapted state; FA -fusaric acid; FB1 -Fumonisin B1; FM -fresh mass; Fv/Fm -maximum quantum yield of PSII; HR -hypersensitive response; MDA -malondialdehyde; NPQ -nonphotochemical quenching; Nr -Never ripe; PCD -programmed cell death; qL -estimates the fraction of open PSII centres; qP -photochemical quenching; RC -reaction centres; ROS -reactive oxygen species; SA -salicylic acid; WT -wild type, Y(I) -effective quantum yield of PSI; Y(II) -effective quantum yield of PSII; Y(CEF) -yield of cyclic electron flow around PSI; Y(NA) -quantum yield of nonphotochemical energy dissipation in PSI due to acceptor side limitation; Y(ND) -quantum yield of nonphotochemical energy dissipation in PSI due to donor side limitation.

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Section: Introductionmentioning

confidence: 99%

Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants

Iqbal¹,

Czékus²,

Ördög³

et al. 2021

Photosynt.

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“…There are various ecotoxicological tests that use plant organisms to determine the toxic effects of commercial and agricultural chemical products or industrial and civil derivatives. The use of plant-based tests started to be relatively significant only in the last two decades (Razinger et al 2007 ; Alkimin et al 2019 ; Dumont et al 2019 ; Eagles et al 2019 ), when plants have been most acknowledged as useful biomonitors in environmental toxicology. This led to an increasing number of environmental directives and regulations requiring the development of specific methodological guidelines for these tests and for their standardized use (Lewis 1995 ; Brain and Cedergreen 2008 ; Mkandawire et al 2014 ).…”

Section: Resultsmentioning

confidence: 99%

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

Ceschin

Bellini

Scalici

2020

Environ Sci Pollut Res

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This paper reviews the current state-of-the-art, limitations, critical issues, and new directions in freshwater plant ecotoxicology. We selected peer-reviewed studies using relevant databases and for each (1) publication year, (2) test plant species, (3) reference plant group (microalgae, macroalgae, bryophytes, pteridophytes, flowering plants), (4) toxicant tested (heavy metal, pharmaceutical product, hydrocarbon, pesticide, surfactant, plastic), (5) experiment site (laboratory, field), and (6) toxicant exposure duration. Although aquatic plant organisms play a key role in the functioning of freshwater ecosystems, mainly linked to their primary productivity, their use as biological models in ecotoxicological tests was limited if compared to animals. Also, toxicant effects on freshwater plants were scarcely investigated and limited to studies on microalgae (80%), or only to a certain number of recurrent species (Pseudokirchneriella subcapitata, Chlorella vulgaris, Lemna minor, Myriophyllum spicatum). The most widely tested toxicants on plants were heavy metals (74%), followed by pharmaceutical products and hydrocarbons (7%), while the most commonly utilized endpoints in tests were plant growth inhibition, variations in dry or fresh weight, morpho-structural alterations, chlorosis, and/or necrosis. The main critical issues emerged from plant-based ecotoxicological tests were the narrow range of species and endpoints considered, the lack of environmental relevance, the excessively short exposure times, and the culture media potentially reacting with toxicants. Proposals to overcome these issues are discussed.

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“…Due to their association with various crops, many potential health risks have been observed in humans and animals through food chain contamination. These mycotoxins can cause the inhibition of protein synthesis, suppression of the immune system, and they can enhance the risk of cancer as well (Binder et al 2007;Eagles et al 2019;Jia et al 2021). Fumonisin B1 (FB1) is one of the relevant mycotoxins due to its toxicity and widespread occurrence (Da Silva et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

Iqbal

Czékus

Angeli³

et al. 2022

J Plant Growth Regul

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Fumonisin B1 (FB1) is a harmful mycotoxin produced by Fusarium species, which results in oxidative stress leading to cell death in plants. FB1 perturbs the metabolism of sphingolipids and causes growth and yield reduction. This study was conducted to assess the role of ethylene in the production and metabolism of reactive oxygen species in the leaves of wild type (WT) and ethylene receptor mutant Never ripe (Nr) tomato and to elucidate the FB1-induced phytotoxic effects on the photosynthetic activity and antioxidant mechanisms triggered by FB1 stress. FB1 exposure resulted in significant ethylene emission in a concentration-dependent manner in both genotypes. Moreover, FB1 significantly affected the photosynthetic parameters of PSII and PSI and activated photoprotective mechanisms, such as non-photochemical quenching in both genotypes, especially under 10 µM FB1 concentration. Further, the net photosynthetic rate and stomatal conductance were significantly reduced in both genotypes in a FB1 dose-dependent manner. Interestingly, lipid peroxidation and loss of cell viability were also more pronounced in WT as compared to Nr leaves indicating the role of ethylene in cell death induction in the leaves. Thus, FB1-induced oxidative stress affected the working efficiency of PSI and PSII in both tomato genotypes. However, ethylene-dependent antioxidant enzymatic defense mechanisms were activated by FB1 and showed significantly elevated levels of superoxide dismutase (18.6%), ascorbate peroxidase (129.1%), and glutathione S-transferase activities (66.62%) in Nr mutants as compared to WT tomato plants confirming the role of ethylene in the regulation of cell death and defense mechanisms under the mycotoxin exposure.

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Impacts of the mycotoxin zearalenone on growth and photosynthetic responses in laboratory populations of freshwater macrophytes (Lemna minor) and microalgae (Pseudokirchneriella subcapitata)

Abstract: Impacts of the mycotoxin zearalenone on growth and photosynthetic responses in laboratory populations of freshwater macrophytes (Lemna minor) and microalgae (Pseudokirchneriella subcapitata). Eagles, EJ

Cited by 12 publications

References 40 publications

Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants

Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

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