دورية أكاديمية
Tolerance of the Australian halophyte, beaded samphire, Sarcocornia quinqueflora, to Pb and Zn under glasshouse conditions: Evaluating metal uptake and partitioning, photosynthetic performance, biomass, and growth.
| العنوان: | Tolerance of the Australian halophyte, beaded samphire, Sarcocornia quinqueflora, to Pb and Zn under glasshouse conditions: Evaluating metal uptake and partitioning, photosynthetic performance, biomass, and growth. |
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| المؤلفون: | Voigt RAL; School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales, 2308, Australia., MacFarlane GR; School of Environmental and Life Sciences, The University of Newcastle, Callaghan, New South Wales, 2308, Australia. Electronic address: Geoff.MacFarlane@newcastle.edu.au. |
| المصدر: | Aquatic toxicology (Amsterdam, Netherlands) [Aquat Toxicol] 2024 May; Vol. 270, pp. 106887. Date of Electronic Publication: 2024 Mar 10. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier/North Holland Biomedical Press Country of Publication: Netherlands NLM ID: 8500246 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1514 (Electronic) Linking ISSN: 0166445X NLM ISO Abbreviation: Aquat Toxicol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Amsterdam, Netherlands : Elsevier/North Holland Biomedical Press, c1981- |
| مواضيع طبية MeSH: | Water Pollutants, Chemical*/toxicity , Metals, Heavy*/analysis , Soil Pollutants*, Salt-Tolerant Plants ; Lead/toxicity ; Biomass ; Ecosystem ; Australia ; Zinc/toxicity ; Biodegradation, Environmental |
| مستخلص: | Saltmarsh sediments are susceptible to accumulation of excessive concentrations of anthropogenically elevated metals such as lead (Pb) and zinc (Zn). The resident salt tolerant plants of saltmarsh ecosystems form the basal underpinning of these ecosystems. As such, metal-associated adverse impacts on their physiology can have detrimental flow-on effects at individual, population, and community levels. The present study assessed the accumulation and partitioning of ecologically relevant concentrations of Pb, Zn, and their combination in a dominant Australian saltmarsh species, Sarcocornia quinqueflora. Plants were hydroponically maintained under glasshouse conditions for 16 weeks exposure to either Pb (20 µg l -1 ), Zn (100 µg l -1 ), or their mixture. We evaluated the chronic toxicological effects of single and mixed metal treatments with reference to metal uptake and partitioning, photosynthetic performance, photosynthetic pigment concentration, biomass and growth. Lead was more toxic than Zn, and Zn appeared to have an antagonistic effect on the toxicological effects of Pb in S.quinqueflora in terms of metal uptake, photosynthetic performance, photosynthetic pigment concentrations, and growth. Indeed, the tolerance index was 55 % in plants treated with Pb compared to 77 % in Zn treated plants and 73 % in Pb+Zn treated plants. Finally, Sarcocornia quinqueflora primarily accumulated both Pb and Zn in roots at concentrations exceeding unity whilst translocation of these metals to above ground tissues was restricted regardless of treatment. This suggests that S. quinqueflora may be suitable for phytostabilisation of Zn, and of Pb particularly in the presence of Zn. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Chlorophyll fluorescence; Metals; PAM; Photosynthetic pigment; Phytoremediation |
| المشرفين على المادة: | 2P299V784P (Lead) 0 (Water Pollutants, Chemical) J41CSQ7QDS (Zinc) 0 (Metals, Heavy) 0 (Soil Pollutants) |
| تواريخ الأحداث: | Date Created: 20240310 Date Completed: 20240415 Latest Revision: 20240415 |
| رمز التحديث: | 20240415 |
| DOI: | 10.1016/j.aquatox.2024.106887 |
| PMID: | 38461756 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-1514 |
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| DOI: | 10.1016/j.aquatox.2024.106887 |