Mode of action and fate of microcystins in the complex soil-plant ecosystems

Redouane, El Mahdi; Zerrifi, Soukaina El Amrani; Khalloufi, Fatima El; Oufdou, Khalid; Oudra, Brahim; Lahrouni, Majida; Campos, Alexandre; Vasconcelos, Vítor

doi:10.1016/j.chemosphere.2019.03.008

Cited by 49 publications

(16 citation statements)

References 133 publications

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“…Likewise, MCs occurrence in irrigation ponds and reservoirs, may affect negatively the yield, productivity and nutritional quality of agricultural crops that rely mainly on this water resource [34][35][36][37][38]. Moreover, MCs induce acute oxidative stress and several toxic effects on plant biochemical and physiological functions, including: (a) plant growth and development; (b) photosynthesis; (c) carbon dioxide fixation; (d) sucrose biosynthesis; (e) starch storage; (f) nitrogen uptake; (g) hormone transport and translocation; (i) mitosis and DNA functions [3,39,40]. MCs introduced into soil via irrigation, seem to be bioavailable to soil-crop systems during a long-term period on account of their adsorption onto clay-humic particles, with half-life ranging from 1 to 17.8 days.…”

Section: Introductionmentioning

confidence: 99%

“…MCs introduced into soil via irrigation, seem to be bioavailable to soil-crop systems during a long-term period on account of their adsorption onto clay-humic particles, with half-life ranging from 1 to 17.8 days. Furthermore, MCs persistence is depending on soil chemical composition and microbial activity [14,39,[41][42][43][44][45], with total concentrations varying from 1.6 µg Kg −1 to 187 µg Kg −1 in soil compartment [35,[46][47][48]. Indeed, in certain regions where water resources are scarce, MC-containing waters are largely used to irrigate crops, which leads to food chain contamination and thus results in human exposure to cyanotoxins; since several studies have reported the bioaccumulation of MCs in plant tissues, some of which focused on edible plants [35,36,38,47,[49][50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

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Protective Role of Native Rhizospheric Soil Microbiota Against the Exposure to Microcystins Introduced into Soil-Plant System via Contaminated Irrigation Water and Health Risk Assessment

Redouane

Lahrouni²,

Martins³

et al. 2021

Toxins

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Microcystins (MCs) produced in eutrophic waters may decrease crop yield, enter food chains and threaten human and animal health. The main objective of this research was to highlight the role of rhizospheric soil microbiota to protect faba bean plants from MCs toxicity after chronic exposure. Faba bean seedlings were grown in pots containing agricultural soil, during 1 month under natural environmental conditions of Marrakech city in Morocco (March–April 2018) and exposed to cyanobacterial extracts containing up to 2.5 mg·L−1 of total MCs. Three independent exposure experiments were performed (a) agricultural soil was maintained intact “exposure experiment 1”; (b) agricultural soil was sterilized “exposure experiment 2”; (c) agricultural soil was sterilized and inoculated with the rhizobia strain Rhizobium leguminosarum RhOF34 “exposure experiment 3”. Overall, data showed evidence of an increased sensitivity of faba bean plants, grown in sterilized soil, to MCs in comparison to those grown in intact and inoculated soils. The study revealed the growth inhibition of plant shoots in both exposure experiments 2 and 3 when treated with 2.5 mg·L−1 of MCs. The results also showed that the estimated daily intake (EDI) of MCs, in sterilized soil, exceeded 2.18 and 1.16 times the reference concentrations (0.04 and 0.45 µg of microcysin-leucine arginine (MC-LR). Kg−1 DW) established for humans and cattle respectively, which raises concerns about human food chain contamination.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Protective Role of Native Rhizospheric Soil Microbiota Against the Exposure to Microcystins Introduced into Soil-Plant System via Contaminated Irrigation Water and Health Risk Assessment

Redouane

Lahrouni²,

Martins³

et al. 2021

Toxins

Self Cite

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“…On the grounds of climate warming and increased nutrient inputs due to anthropogenic activities, harmful cyanobacterial blooms (HCBs) become a severe hazard for freshwater ecosystems [ 1 , 2 , 3 , 4 ]. Due to the critical economic and public health issues caused by HCBs, extensive research on this topic has been conducted aiming to disclose the detrimental effects of HCBs and mitigation strategies.…”

Section: Introductionmentioning

confidence: 99%

Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach

Zerrifi

Khalloufi

Mugani

et al. 2020

Toxins

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The application of natural compounds extracted from seaweeds is a promising eco-friendly alternative solution for harmful algae control in aquatic ecosystems. In the present study, the anti-cyanobacterial activity of three Moroccan marine macroalgae essential oils (EOs) was tested and evaluated on unicellular Microcystis aeruginosa cyanobacterium. Additionally, the possible anti-cyanobacterial response mechanisms were investigated by analyzing the antioxidant enzyme activities of M. aeruginosa cells. The results of EOs GC–MS analyses revealed a complex chemical composition, allowing the identification of 91 constituents. Palmitic acid, palmitoleic acid, and eicosapentaenoic acid were the most predominant compounds in Cystoseira tamariscifolia, Sargassum muticum, and Ulva lactuca EOs, respectively. The highest anti-cyanobacterial activity was recorded for Cystoseira tamariscifolia EO (ZI = 46.33 mm, MIC = 7.81 μg mL−1, and MBC = 15.62 μg mL−1). The growth, chlorophyll-a and protein content of the tested cyanobacteria were significantly reduced by C. tamariscifolia EO at both used concentrations (inhibition rate >67% during the 6 days test period in liquid media). Furthermore, oxidative stress caused by C. tamariscifolia EO on cyanobacterium cells showed an increase of the activities of superoxide dismutase (SOD) and catalase (CAT), and malondialdehyde (MDA) concentration was significantly elevated after 2 days of exposure. Overall, these experimental findings can open a promising new natural pathway based on the use of seaweed essential oils to the fight against potent toxic harmful cyanobacterial blooms (HCBs).

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“…MC-LR induced necrosis was showed by histological investigations of S. alba seedlings’ cotyledons, and cell death was supported by elevated nuclease activity [ 37 ]. Chlorosis/necrosis of leaves or/and browning/necrosis of roots as frequent characteristic morphological features of MC treatments have been described for many plant species [ 24 , 61 , 65 , 66 , 67 ].…”

Section: Alterations Induced By Cyanotoxins On Peculiar Plant Structuresmentioning

confidence: 99%

Subcellular Alterations Induced by Cyanotoxins in Vascular Plants—A Review

Máthé

M-Hamvas

Vasas

et al. 2021

Plants

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Phytotoxicity of cyanobacterial toxins has been confirmed at the subcellular level with consequences on whole plant physiological parameters and thus growth and productivity. Most of the data are available for two groups of these toxins: microcystins (MCs) and cylindrospermopsins (CYNs). Thus, in this review we present a timely survey of subcellular cyanotoxin effects with the main focus on these two cyanotoxins. We provide comparative insights into how peculiar plant cellular structures are affected. We review structural changes and their physiological consequences induced in the plastid system, peculiar plant cytoskeletal organization and chromatin structure, the plant cell wall, the vacuolar system, and in general, endomembrane structures. The cyanotoxins have characteristic dose-and plant genotype-dependent effects on all these structures. Alterations in chloroplast structure will influence the efficiency of photosynthesis and thus plant productivity. Changing of cell wall composition, disruption of the vacuolar membrane (tonoplast) and cytoskeleton, and alterations of chromatin structure (including DNA strand breaks) can ultimately lead to cell death. Finally, we present an integrated view of subcellular alterations. Knowledge on these changes will certainly contribute to a better understanding of cyanotoxin–plant interactions.

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Mode of action and fate of microcystins in the complex soil-plant ecosystems

Cited by 49 publications

References 133 publications

Protective Role of Native Rhizospheric Soil Microbiota Against the Exposure to Microcystins Introduced into Soil-Plant System via Contaminated Irrigation Water and Health Risk Assessment

Protective Role of Native Rhizospheric Soil Microbiota Against the Exposure to Microcystins Introduced into Soil-Plant System via Contaminated Irrigation Water and Health Risk Assessment

Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach

Subcellular Alterations Induced by Cyanotoxins in Vascular Plants—A Review

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