Combined toxic effects of anatoxin-a and microcystin-LR on submerged macrophytes and biofilms.
Identifieur interne : 000201 ( Main/Exploration ); précédent : 000200; suivant : 000202Combined toxic effects of anatoxin-a and microcystin-LR on submerged macrophytes and biofilms.
Auteurs : Qi Li [République populaire de Chine] ; Peng Gu [République populaire de Chine] ; Chen Zhang [République populaire de Chine] ; Xin Luo [République populaire de Chine] ; Hao Zhang [République populaire de Chine] ; Jibiao Zhang [République populaire de Chine] ; Zheng Zheng [République populaire de Chine]Source :
- Journal of hazardous materials [ 1873-3336 ] ; 2020.
Abstract
Hazardous substances, such as anatoxin-a and microcystin-LR, are released into the aquatic environment during cyanobacterial blooms, causing significant ecological risk. To assess the toxic effects of anatoxin-a, microcystin-LR and their combined exposure on submerged macrophytes and biofilms, Vallisneria natans was exposed to solutions containing different concentrations of anatoxin-a and microcystin-LR (0.05-5.00 μg L-1). Results showed that Vallisneria natans was sensitive to anatoxin-a of 0.05 μg L-1, and antagonistic effects were induced at combined microcystin-LR and anatoxin-a exposure. Single and combined exposure effectively induced antioxidant responses such as promoted activities of superoxide dismutase, peroxidase and catalase, as well as increased glutathione S-transferase, glutathione and malondialdehyde content. In addition, anatoxin-a and microcystin-LR could also be absorbed by Vallisneria natans and trigger plant defense responses, generating increased concentrations of the phytohormones abscisic acid and strigolactones. Moreover, the abundances and structure of the microbial community in periphyton biofilms were altered by combined anatoxin-a and microcystin-LR exposure. The enhanced concentration of N-acylated-l-homoserine lactone indicated that the assessed cyanotoxins had a significant influence on quorum-sensing in biofilm microbial communities. These results demonstrated that anatoxin-a and microcystin-LR at environmentally relevant concentrations could disrupt homeostasis, induce effective defense mechanisms of Vallisneria natans and alter biofilms in aquatic ecosystems.
DOI: 10.1016/j.jhazmat.2020.122053
PubMed: 31978825
Affiliations:
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Electronic address: jbzhang@fudan.edu.cn.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433</wicri:regionArea><wicri:noRegion>Shanghai 200433</wicri:noRegion></affiliation></author><author><name sortKey="Zheng, Zheng" sort="Zheng, Zheng" uniqKey="Zheng Z" first="Zheng" last="Zheng">Zheng Zheng</name><affiliation wicri:level="1"><nlm:affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China. Electronic address: zzhenghj@fudan.edu.cn.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433</wicri:regionArea><wicri:noRegion>Shanghai 200433</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of hazardous materials</title><idno type="eISSN">1873-3336</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Hazardous substances, such as anatoxin-a and microcystin-LR, are released into the aquatic environment during cyanobacterial blooms, causing significant ecological risk. To assess the toxic effects of anatoxin-a, microcystin-LR and their combined exposure on submerged macrophytes and biofilms, Vallisneria natans was exposed to solutions containing different concentrations of anatoxin-a and microcystin-LR (0.05-5.00 μg L<sup>-1</sup>). Results showed that Vallisneria natans was sensitive to anatoxin-a of 0.05 μg L<sup>-1</sup>, and antagonistic effects were induced at combined microcystin-LR and anatoxin-a exposure. Single and combined exposure effectively induced antioxidant responses such as promoted activities of superoxide dismutase, peroxidase and catalase, as well as increased glutathione S-transferase, glutathione and malondialdehyde content. In addition, anatoxin-a and microcystin-LR could also be absorbed by Vallisneria natans and trigger plant defense responses, generating increased concentrations of the phytohormones abscisic acid and strigolactones. Moreover, the abundances and structure of the microbial community in periphyton biofilms were altered by combined anatoxin-a and microcystin-LR exposure. The enhanced concentration of N-acylated-l-homoserine lactone indicated that the assessed cyanotoxins had a significant influence on quorum-sensing in biofilm microbial communities. These results demonstrated that anatoxin-a and microcystin-LR at environmentally relevant concentrations could disrupt homeostasis, induce effective defense mechanisms of Vallisneria natans and alter biofilms in aquatic ecosystems.</div></front></TEI><pubmed><MedlineCitation Status="In-Process" Owner="NLM"><PMID Version="1">31978825</PMID><DateRevised><Year>2020</Year><Month>03</Month><Day>19</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3336</ISSN><JournalIssue CitedMedium="Internet"><Volume>389</Volume><PubDate><Year>2020</Year><Month>05</Month><Day>05</Day></PubDate></JournalIssue><Title>Journal of hazardous materials</Title><ISOAbbreviation>J Hazard Mater</ISOAbbreviation></Journal><ArticleTitle>Combined toxic effects of anatoxin-a and microcystin-LR on submerged macrophytes and biofilms.</ArticleTitle><Pagination><MedlinePgn>122053</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0304-3894(20)30039-X</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.jhazmat.2020.122053</ELocationID><Abstract><AbstractText>Hazardous substances, such as anatoxin-a and microcystin-LR, are released into the aquatic environment during cyanobacterial blooms, causing significant ecological risk. To assess the toxic effects of anatoxin-a, microcystin-LR and their combined exposure on submerged macrophytes and biofilms, Vallisneria natans was exposed to solutions containing different concentrations of anatoxin-a and microcystin-LR (0.05-5.00 μg L<sup>-1</sup>). Results showed that Vallisneria natans was sensitive to anatoxin-a of 0.05 μg L<sup>-1</sup>, and antagonistic effects were induced at combined microcystin-LR and anatoxin-a exposure. Single and combined exposure effectively induced antioxidant responses such as promoted activities of superoxide dismutase, peroxidase and catalase, as well as increased glutathione S-transferase, glutathione and malondialdehyde content. In addition, anatoxin-a and microcystin-LR could also be absorbed by Vallisneria natans and trigger plant defense responses, generating increased concentrations of the phytohormones abscisic acid and strigolactones. Moreover, the abundances and structure of the microbial community in periphyton biofilms were altered by combined anatoxin-a and microcystin-LR exposure. The enhanced concentration of N-acylated-l-homoserine lactone indicated that the assessed cyanotoxins had a significant influence on quorum-sensing in biofilm microbial communities. These results demonstrated that anatoxin-a and microcystin-LR at environmentally relevant concentrations could disrupt homeostasis, induce effective defense mechanisms of Vallisneria natans and alter biofilms in aquatic ecosystems.</AbstractText><CopyrightInformation>Copyright © 2020 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Qi</ForeName><Initials>Q</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gu</LastName><ForeName>Peng</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Chen</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Luo</LastName><ForeName>Xin</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Hao</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Jibiao</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China. Electronic address: jbzhang@fudan.edu.cn.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zheng</LastName><ForeName>Zheng</ForeName><Initials>Z</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China. Electronic address: zzhenghj@fudan.edu.cn.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>01</Month><Day>08</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>J Hazard Mater</MedlineTA><NlmUniqueID>9422688</NlmUniqueID><ISSNLinking>0304-3894</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">Anatoxin-a</Keyword><Keyword MajorTopicYN="Y">Biofilm</Keyword><Keyword MajorTopicYN="Y">Microcystin-LR</Keyword><Keyword MajorTopicYN="Y">N-acylated-L-homoserine lactones</Keyword><Keyword MajorTopicYN="Y">Phytohormone</Keyword></KeywordList><CoiStatement>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.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>10</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2020</Year><Month>01</Month><Day>07</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>01</Month><Day>07</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>1</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>1</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>1</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">31978825</ArticleId><ArticleId IdType="pii">S0304-3894(20)30039-X</ArticleId><ArticleId IdType="doi">10.1016/j.jhazmat.2020.122053</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Li, Qi" sort="Li, Qi" uniqKey="Li Q" first="Qi" last="Li">Qi Li</name></noRegion><name sortKey="Gu, Peng" sort="Gu, Peng" uniqKey="Gu P" first="Peng" last="Gu">Peng Gu</name><name sortKey="Luo, Xin" sort="Luo, Xin" uniqKey="Luo X" first="Xin" last="Luo">Xin Luo</name><name sortKey="Zhang, Chen" sort="Zhang, Chen" uniqKey="Zhang C" first="Chen" last="Zhang">Chen Zhang</name><name sortKey="Zhang, Hao" sort="Zhang, Hao" uniqKey="Zhang H" first="Hao" last="Zhang">Hao Zhang</name><name sortKey="Zhang, Jibiao" sort="Zhang, Jibiao" uniqKey="Zhang J" first="Jibiao" last="Zhang">Jibiao Zhang</name><name sortKey="Zheng, Zheng" sort="Zheng, Zheng" uniqKey="Zheng Z" first="Zheng" last="Zheng">Zheng Zheng</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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