Evaluation of morpho-physiological traits and contaminant accumulation ability in Lemna minor L. treated with increasing perfluorooctanoic acid (PFOA) concentrations under laboratory conditions

Pietrini, Fabrizio; Passatore, Laura; Fischetti, Elisa; Carloni, Serena; Ferrario, Claudia; Polesello, Stefano; Zacchini, Massimo

doi:10.1016/j.scitotenv.2019.133828

Cited by 43 publications

(13 citation statements)

References 55 publications

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“…In this context, chlorophyll fluorescence imaging can be analyzed to evaluate plant stresses, allowing in vivo analysis that it is non-destructive [7]. Moreover, it allows the evaluation of the heterogeneity in photosynthetic functions throughout a leaf, owing to image analysis of the quantum efficiency of photosystem II (PSII) in plants affected by several stresses, including heavy metals [8,9], salinity [10], pharmaceuticals [11], and emerging contaminants [12].…”

Section: Introductionmentioning

confidence: 99%

PGPB Improve Photosynthetic Activity and Tolerance to Oxidative Stress in Brassica napus Grown on Salinized Soils

et al. 2021

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Soil salinization, one of the most common causes of soil degradation, negatively affects plant growth, reproduction, and yield in plants. Saline conditions elicit some physiological changes to cope with the imposed osmotic and oxidative stresses. Inoculation of plants with some bacterial species that stimulate their growth, i.e., plant growth-promoting bacteria (PGPB), may help plants to counteract saline stress, thus improving the plant’s fitness. This manuscript reports the effects of the inoculation of a salt-sensitive cultivar of Brassica napus (canola) with five different PGPB species (separately), i.e., Azospirillum brasilense, Arthrobacter globiformis, Burkholderia ambifaria, Herbaspirillum seropedicae, and Pseudomonas sp. on plant salt stress physiological responses. The seeds were sown in saline soil (8 dS/m) and inoculated with bacterial suspensions. Seedlings were grown to the phenological stage of rosetta, when morphological and physiological features were determined. In the presence of the above-mentioned PGPB, salt exposed canola plants grew better than non-inoculated controls. The water loss was reduced in inoculated plants under saline conditions, due to a low level of membrane damage and the enhanced synthesis of the osmolyte proline, the latter depending on the bacterial strain inoculated. The reduction in membrane damage was also due to the increased antioxidant activity (i.e., higher amount of phenolic compounds, enhanced superoxide dismutase, and ascorbate peroxidase activities) in salt-stressed and inoculated Brassica napus. Furthermore, the salt-stressed and inoculated plants did not show detrimental effects to their photosynthetic apparatus, i.e., higher efficiency of PSII and low energy dissipation by heat for photosynthesis were detected. The improvement of the response to salt stress provided by PGPB paves the way to further use of PGPB as inoculants of plants grown in saline soils.

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Section: Introductionmentioning

confidence: 99%

PGPB Improve Photosynthetic Activity and Tolerance to Oxidative Stress in Brassica napus Grown on Salinized Soils

et al. 2021

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“…In this regard, Boudreau et al (2003) and McCarthy et al ( 2017 ) tested the effects of PFAS on the growth of two different Lemna species, L. minor and L. gibba , highlighting that the latter showed a higher sensitivity to PFOS as it was more strongly inhibited in growth; however, it should be noted that the concentration that produced the toxic effect was higher (mg/L) than the one recorded in the surveys on the natural environment (ng/L). Conversely, Pietrini et al ( 2019 ) demonstrated that at PFAS concentrations close to those actually detected in nature, inhibitory effects in biometric and physiological descriptors were not found in L. minor . However, the study highlights the important role of the plant species as primary producers and, therefore, their potential capability to bioaccumulate these substances in their tissues, potentially triggering biomagnification phenomena along the trophic chains.…”

Section: Resultsmentioning

confidence: 94%

“… Godoy et al ( 2018 ) 6.2, 12.5, 25, 50, 100, 200, 400 mg/L EC50 = 57.1 mg/L 168 Steinberg Frond number, frond area, fresh weight Lemna minor Brain et al ( 2004a , b ) 0.044, 0.608, 2.664, 24.538 mol/L Increasing concentration dependent 168 Modified Andrews Root length, wet weight, dry weight, root number, longest root, node number, plant length, pigment analyses Myriophyllum sibiricum Hydrocarbons Pokora et al (2010) 0.25 mg/L 0.25 mg/L 24 Bristol Photosynthetic activity, enzymatic activity Desmodesmus spp. Mallakin et al (2002) 0-10 μg/mL Increasing concentration dependent 168 Half-strength Hutner Inhibition of photosynthetic activity Lemna gibba Pesticides Ribeiro et al (2019) 111, 333 μg/L Time and increasing concentration dependent 168, 336, 504, 672 Hoagland Fresh matter, leaf anatomy Eichhornia crassipes Fernández-Naveira et al ( 2016 ) 0.1, 0.25, 0.5, 1, 2 μM Time and increasing concentration dependent 24, 48, 72, 96 TAP (tris-acetate phosphate) medium growth rate, dry weight, photosynthetic pigments, protein contents, enzymatic activity Chlamydomonas reinhardtii Surfactants Pietrini et al ( 2019 ) 2, 20, 200 μg/L No toxic effect, phytoaccumulation 168 Hoagland Growth rate, frond area, frond number, chlorophyll fluorescence Lemna minor Boudreau et al (2003) 12.5, 25, 50, 100, 200, 400 mg/L IC50 = 81.6, 88.1 mg/L 96 Bristol Cell density, chlorophyll content Chlorella vulgaris Plastics …”

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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“…Because PFASs are taken up by plants, its use can be proposed as a phytoremediation procedure to eliminate the loads of these contaminants (Huff et al, 2020), as demonstrated for juncus (Zhang et al, 2019) and macrophytes (Pi et al, 2017). L. minor has a large proliferation rate, a high uptake capacity (Boudreau et al, 2003;Pietrini et al, 2019), and is considered a good phytoremediator of PFASs in surface water (Zhang and Liang, 2020). Similarly, C. demersum was previously used in PFAS bioaccumulation studies in natural environments (Babut et al, 2017;Shi et al, 2012).…”

Section: Uptake Of Pfass In Floating and Rooted Plantsmentioning

confidence: 99%

Plant uptake of perfluoroalkyl substances in freshwater environments (Dongzhulong and Xiaoqing Rivers, China)

Colomer-Vidal

Jiang

Mei

et al. 2022

Journal of Hazardous Materials

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This study provides new knowledge on the mobility, behavior, and partitioning of 17 perfluoroalkyl substances (PFASs) in the water-sediment-plant system along the Dongzhulong and Xiaoqing Rivers. The fate of PFASs in these rivers is also discussed. The study area is affected by the industrial production of perfluorooctanoic acid (PFOA). The ∑ PFASs in water and sediments close to the industrial discharge were 84,000 ± 2000 ng/L and 2300 ± 200 ng/g dw, respectively, with the concentrations decreasing along the river due to dilution. PFOA was the dominant compound (74-97% of the ∑ PFASs), although other PFASs were identified close to urban areas. Principal component analysis and solid-liquid distribution coefficients revealed that long-chain PFASs accumulated in the sediment whereas short-chain PFASs remained in the water all along the river. PFASs were taken up by plants and remobilized to different plant compartments according to shoot concentration factors (SCFs), root concentration factors (RCF), and transfer factors (TFs). Among the four plant species studied, floating plants absorbed high levels of PFASs, while rooted species translocated short-chain PFASs from the roots to the shoots. Therefore, floating species, due to their high uptake capacity and large proliferation rate, could eventually be used for phytoremediation.

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Evaluation of morpho-physiological traits and contaminant accumulation ability in Lemna minor L. treated with increasing perfluorooctanoic acid (PFOA) concentrations under laboratory conditions

Cited by 43 publications

References 55 publications

PGPB Improve Photosynthetic Activity and Tolerance to Oxidative Stress in Brassica napus Grown on Salinized Soils

PGPB Improve Photosynthetic Activity and Tolerance to Oxidative Stress in Brassica napus Grown on Salinized Soils

Aquatic plants and ecotoxicological assessment in freshwater ecosystems: a review

Plant uptake of perfluoroalkyl substances in freshwater environments (Dongzhulong and Xiaoqing Rivers, China)

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