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Phragmites sp. physiological changes in a constructed wetland treating an effluent contaminated with a diazo dye (DR81).
Environ Sci Pollut Res Int. 2014; 21(16):9626-43.ES

Abstract

The role of Phragmites sp. in phytoremediation of wastewaters containing azo dyes is still, in many ways, at its initial stage of investigation. This plant response to the long-term exposure to a highly conjugated di-azo dye (Direct Red 81, DR81) was assessed using a vertical flow constructed wetland, at pilot scale. A reed bed fed with water was used as control. Changes in photosynthetic pigment content in response to the plant contact with synthetic DR81 effluent highlight Phragmites plasticity. Phragmites leaf enzymatic system responded rapidly to the stress imposed; in general, within 1 day, the up-regulation of foliar reactive oxygen species-scavenging enzymes (especially superoxide dismutase, ascorbate peroxidase (APX), glutathione peroxidase (GPX) and peroxidase) was noticed as plants entered in contact with synthetic DR81 effluent. This prompt activation decreased the endogenous levels of H₂O₂ and the malonyldialdehyde content beyond reference values. Glutathione S-transferase (GST) activity intensification was not enough to cope with stress imposed by DR81. GPX activity was pivotal for the detoxification pathways after a 24-h exposure. Carotenoid pool was depleted during this shock. After the imposed DR81 stress, plants were harvested. In the next vegetative cycle, Phragmites had already recovered from the chemical stress. Principal component analysis (PCA) highlights the role of GPX, GST, APX, and carotenoids along catalase (CAT) in the detoxification process.

Authors+Show Affiliations

IBB-Institute for Biotechnology and Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24809499

Citation

Ferreira, Renata Alexandra, et al. "Phragmites Sp. Physiological Changes in a Constructed Wetland Treating an Effluent Contaminated With a Diazo Dye (DR81)." Environmental Science and Pollution Research International, vol. 21, no. 16, 2014, pp. 9626-43.
Ferreira RA, Duarte JG, Vergine P, et al. Phragmites sp. physiological changes in a constructed wetland treating an effluent contaminated with a diazo dye (DR81). Environ Sci Pollut Res Int. 2014;21(16):9626-43.
Ferreira, R. A., Duarte, J. G., Vergine, P., Antunes, C. D., Freire, F., & Martins-Dias, S. (2014). Phragmites sp. physiological changes in a constructed wetland treating an effluent contaminated with a diazo dye (DR81). Environmental Science and Pollution Research International, 21(16), 9626-43. https://doi.org/10.1007/s11356-014-2988-3
Ferreira RA, et al. Phragmites Sp. Physiological Changes in a Constructed Wetland Treating an Effluent Contaminated With a Diazo Dye (DR81). Environ Sci Pollut Res Int. 2014;21(16):9626-43. PubMed PMID: 24809499.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phragmites sp. physiological changes in a constructed wetland treating an effluent contaminated with a diazo dye (DR81). AU - Ferreira,Renata Alexandra, AU - Duarte,Joana Gouveia, AU - Vergine,Pompilio, AU - Antunes,Carlos D, AU - Freire,Filipe, AU - Martins-Dias,Susete, Y1 - 2014/05/09/ PY - 2013/08/03/received PY - 2014/04/30/accepted PY - 2014/5/10/entrez PY - 2014/5/9/pubmed PY - 2015/6/6/medline SP - 9626 EP - 43 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 21 IS - 16 N2 - The role of Phragmites sp. in phytoremediation of wastewaters containing azo dyes is still, in many ways, at its initial stage of investigation. This plant response to the long-term exposure to a highly conjugated di-azo dye (Direct Red 81, DR81) was assessed using a vertical flow constructed wetland, at pilot scale. A reed bed fed with water was used as control. Changes in photosynthetic pigment content in response to the plant contact with synthetic DR81 effluent highlight Phragmites plasticity. Phragmites leaf enzymatic system responded rapidly to the stress imposed; in general, within 1 day, the up-regulation of foliar reactive oxygen species-scavenging enzymes (especially superoxide dismutase, ascorbate peroxidase (APX), glutathione peroxidase (GPX) and peroxidase) was noticed as plants entered in contact with synthetic DR81 effluent. This prompt activation decreased the endogenous levels of H₂O₂ and the malonyldialdehyde content beyond reference values. Glutathione S-transferase (GST) activity intensification was not enough to cope with stress imposed by DR81. GPX activity was pivotal for the detoxification pathways after a 24-h exposure. Carotenoid pool was depleted during this shock. After the imposed DR81 stress, plants were harvested. In the next vegetative cycle, Phragmites had already recovered from the chemical stress. Principal component analysis (PCA) highlights the role of GPX, GST, APX, and carotenoids along catalase (CAT) in the detoxification process. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/24809499/Phragmites_sp__physiological_changes_in_a_constructed_wetland_treating_an_effluent_contaminated_with_a_diazo_dye__DR81__ L2 - https://dx.doi.org/10.1007/s11356-014-2988-3 DB - PRIME DP - Unbound Medicine ER -