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Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study

Microcystin-LR (MC-LR) is prevalent in water and can be translocated into soil-crop ecosystem via irrigation, overflow (pollution accident), and cyanobacterial manure applications, threatening agricultural production and human health. However, the effects of various input pathways on the bioaccumula...

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Autores principales: Xiang, Lei, Li, Yan-Wen, Wang, Zhen-Ru, Liu, Bai-Lin, Zhao, Hai-Ming, Li, Hui, Cai, Quan-Ying, Mo, Ce-Hui, Li, Qing X.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7472386/
https://www.ncbi.nlm.nih.gov/pubmed/32823916
http://dx.doi.org/10.3390/toxins12080523
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author Xiang, Lei
Li, Yan-Wen
Wang, Zhen-Ru
Liu, Bai-Lin
Zhao, Hai-Ming
Li, Hui
Cai, Quan-Ying
Mo, Ce-Hui
Li, Qing X.
author_facet Xiang, Lei
Li, Yan-Wen
Wang, Zhen-Ru
Liu, Bai-Lin
Zhao, Hai-Ming
Li, Hui
Cai, Quan-Ying
Mo, Ce-Hui
Li, Qing X.
author_sort Xiang, Lei
collection PubMed
description Microcystin-LR (MC-LR) is prevalent in water and can be translocated into soil-crop ecosystem via irrigation, overflow (pollution accident), and cyanobacterial manure applications, threatening agricultural production and human health. However, the effects of various input pathways on the bioaccumulation and toxicity of MCs in terrestrial plants have been hardly reported so far. In the present study, pot experiments were performed to compare the bioaccumulation, toxicity, and health risk of MC-LR as well as its degradation in soils among various treatments with the same total amount of added MC-LR (150 μg/kg). The treatments included irrigation with polluted water (IPW), cultivation with polluted soil (CPS), and application of cyanobacterial manure (ACM). Three common leaf-vegetables in southern China were used in the pot experiments, including Ipomoea batatas L., Brassica juncea L., and Brassica alboglabra L. All leaf vegetables could bioaccumulate MC-LR under the three treatments, with much higher MC-LR bioaccumulation, especially root bioconcentration observed in ACM treatment than IPW and CPS treatments. An opposite trend in MC-LR degradation in soils of these treatments indicated that ACM could limit MC-LR degradation in soils and thus promote its bioaccumulation in the vegetables. MC-LR bioaccumulation could cause toxicity to the vegetables, with the highest toxic effects observed in ACM treatment. Similarly, bioaccumulation of MC-LR in the edible parts of the leaf-vegetables posed 1.1~4.8 fold higher human health risks in ACM treatment than in IPW and CPS treatments. The findings of this study highlighted a great concern on applications of cyanobacterial manure.
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spelling pubmed-74723862020-09-04 Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study Xiang, Lei Li, Yan-Wen Wang, Zhen-Ru Liu, Bai-Lin Zhao, Hai-Ming Li, Hui Cai, Quan-Ying Mo, Ce-Hui Li, Qing X. Toxins (Basel) Article Microcystin-LR (MC-LR) is prevalent in water and can be translocated into soil-crop ecosystem via irrigation, overflow (pollution accident), and cyanobacterial manure applications, threatening agricultural production and human health. However, the effects of various input pathways on the bioaccumulation and toxicity of MCs in terrestrial plants have been hardly reported so far. In the present study, pot experiments were performed to compare the bioaccumulation, toxicity, and health risk of MC-LR as well as its degradation in soils among various treatments with the same total amount of added MC-LR (150 μg/kg). The treatments included irrigation with polluted water (IPW), cultivation with polluted soil (CPS), and application of cyanobacterial manure (ACM). Three common leaf-vegetables in southern China were used in the pot experiments, including Ipomoea batatas L., Brassica juncea L., and Brassica alboglabra L. All leaf vegetables could bioaccumulate MC-LR under the three treatments, with much higher MC-LR bioaccumulation, especially root bioconcentration observed in ACM treatment than IPW and CPS treatments. An opposite trend in MC-LR degradation in soils of these treatments indicated that ACM could limit MC-LR degradation in soils and thus promote its bioaccumulation in the vegetables. MC-LR bioaccumulation could cause toxicity to the vegetables, with the highest toxic effects observed in ACM treatment. Similarly, bioaccumulation of MC-LR in the edible parts of the leaf-vegetables posed 1.1~4.8 fold higher human health risks in ACM treatment than in IPW and CPS treatments. The findings of this study highlighted a great concern on applications of cyanobacterial manure. MDPI 2020-08-14 /pmc/articles/PMC7472386/ /pubmed/32823916 http://dx.doi.org/10.3390/toxins12080523 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xiang, Lei
Li, Yan-Wen
Wang, Zhen-Ru
Liu, Bai-Lin
Zhao, Hai-Ming
Li, Hui
Cai, Quan-Ying
Mo, Ce-Hui
Li, Qing X.
Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study
title Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study
title_full Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study
title_fullStr Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study
title_full_unstemmed Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study
title_short Bioaccumulation and Phytotoxicity and Human Health Risk from Microcystin-LR under Various Treatments: A Pot Study
title_sort bioaccumulation and phytotoxicity and human health risk from microcystin-lr under various treatments: a pot study
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7472386/
https://www.ncbi.nlm.nih.gov/pubmed/32823916
http://dx.doi.org/10.3390/toxins12080523
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