Fungal endophytes modulate the negative effects induced by Persistent Organic Pollutants in the antarctic plant Colobanthus quitensis

Physiologia Plantarum, Journal Year: 2025, Volume and Issue: 177(1)

Published: Jan. 1, 2025

Abstract Antarctica has one of the most sensitive ecosystems to negative effects Persistent Organic Pollutants (POPs) on its biodiversity. This is because lower temperatures and persistence POPs that promote their accumulation or even biomagnification. However, impact vascular plants unknown. Moreover, fungal symbionts could modulate host cope with this stress factor. study investigates molecular ecophysiological responses Sub‐Antarctic Antarctic plant Colobanthus quitensis in different populations along a latitudinal gradient (53°‐ 67° S), emphasizing role endophytic fungi. The results show exposure C. generates oxidative alters performance. Nevertheless, association endophytes exposure, shows lipid peroxidation, higher proline content photosynthetic capacity, as well biomass survival percentage, compared absence endophytes. On other hand, antarctic population (67°S) fungi presents better modulating upon exposure. Endophytic would be more necessary for performance towards latitudes extreme conditions, contributing significantly general functional adaptation. We develop transcriptomics analyses n quitensis‐ from Peninsula population. observed tolerance through upregulated genes redox regulation based ascorbate scavenging mechanisms (peroxidases, MDAR, VTC4, CCS), transformation (monooxygenases) conjugation compounds metabolites (glutathione transferases, glycosyltransferases, S‐transferases), storage elimination conjugates (ABC transporters, C G family) contribute detoxification cell. work highlights contribution resistance situations environmental stress, especially conditions such antarctica exposed anthropogenic impact. implications these findings are relevant biosecurity last pristine bastions worldwide.

Language: Английский

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Role of Microbes in the degradation of organic semivolatile compounds in polar ecosystems: A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 879, P. 163046 - 163046

Published: March 24, 2023

Language: Английский

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Atmospheric bulk depositions: state-of-the-art and European legislative framework with focus on Italy

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: unknown

Published: July 23, 2024

Abstract The determination of total atmospheric deposition (bulk) is an essential tool to assess the state environmental contamination and consequent exposure population persistent organic pollutants (POPs) through intake contaminated food. Over past 20 years, international authorities European Union various pieces legislation have emphasised importance conducting monitoring studies on depositions better understand their impact environment human health without setting reference values. Despite absence such values, several countries, national laws, adopted limit values and/or guideline for fluxes some (dioxins, furans, polychlorinated biphenyls polycyclic aromatic hydrocarbons) inorganic (metals). aim this review both summarise present discuss different legislations by member states. Furthermore, a focus paper will be dedicated Italian legislation, where there currently no specific POPs in deposition. In any case, Italy, as National Institute Health (ISS) Regional Environmental Protection Agencies (ARPA), conducted numerous activities depositions, providing scientific community policymakers with data which establish

Language: Английский

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Biomonitoring of persistent pollutants in grey seal (Halichoerus seagrypus) pups from the Gulf of Riga, Baltic Sea

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 209, P. 117198 - 117198

Published: Nov. 1, 2024

We analyzed for the first time concentration of potentially toxic trace elements Hg, As, Pb, Cr and Se POPs (PCBs OCPs) in tissues 41 grey seal pups (Halichoerus grypus) stranded on shores Gulf Riga. Lanugo was sample with highest concentrations all except Hg. The found this biological matrix appeared as follows: Hg (2.50 ± 1.43 μg/g); (1.22 0.82 (0.96 1.51 As (0.95 1.03 Pb (0.50 0.60 μg/g). were∑PCB (0.566 0.520 μg/g), ∑DDT (0.522 0.454 ∑HCH (0.043 0.045 μg/g) Chlordane (0.041 detected brain levels above threshold described neurobehavioural changes some individuals also exceeded PCBs. Thus, health could be affected by both groups pollutants.

Language: Английский

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Dichlorodiphenyltrichloroethane (Ddt) And Dichlorodiphenyldichloroethylene (Dde) Levels in Air and Surface Seawaters Along the Antarctic Peninsula

Published: Jan. 1, 2023

PPersistent organic pollutants (POPs) are widespread worldwide reaching polar regions. Among POPs dichlorodiphenyltrichloroethane (DDT) and their metabolites have been reported scarcely in the Antarctic environment. Here we report levels of p,p’-DDT, o,p’-DDT, p,p’-DDE o,p’-DDE air water samples collected during austral summer 2009. The found ranged from 0.25 to 4.26 pg m-3 atmospheric while 0.07 L-1. These concentrations were range last 20 years Antarctica. However, source ratio showed that most p,p’-DDT comes fresh applications Dicofol formulations. back-trajectories estimated for masses revealed came continental peninsula surrounding waters. diffusive exchange direction surface waters final sink studied compounds survey period.

Language: Английский

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