Repository logo
 
Publication

Effects of microcystin-LR, cylindrospermopsin and a microcystin-LR/cylindrospermopsin mixture on growth, oxidative stress and mineral content in lettuce plants (Lactuca sativa L.)

2015Journal article Open access
Simple item page
dc.contributor.authorFreitas, Marisa
dc.contributor.authorAzevedo, Joana
dc.contributor.authorPinto, Edgar
dc.contributor.authorNeves, Joana
dc.contributor.authorCampos, Alexandre
dc.contributor.authorVasconcelos, Vitor
dc.date.accessioned2019-07-11T13:30:58Z
dc.date.available2019-07-11T13:30:58Z
dc.date.issued2015
dc.description.abstractToxic cyanobacterial blooms are documented worldwide as an emerging environmental concern. Recent studies support the hypothesis that microcystin-LR (MC-LR) and cylindrospermopsin (CYN) produce toxic effects in crop plants. Lettuce (Lactuca sativa L.) is an important commercial leafy vegetable that supplies essential elements for human nutrition; thus, the study of its sensitivity to MC-LR, CYN and a MC-LR/CYN mixture is of major relevance. This study aimed to assess the effects of environmentally relevant concentrations (1, 10 and 100 µg/L) of MC-LR, CYN and a MC-LR/CYN mixture on growth, antioxidant defense system and mineral content in lettuce plants. In almost all treatments, an increase in root fresh weight was obtained; however, the fresh weight of leaves was significantly decreased in plants exposed to 100 µg/L concentrations of each toxin and the toxin mixture. Overall, GST activity was significantly increased in roots, contrary to GPx activity, which decreased in roots and leaves. The mineral content in lettuce leaves changed due to its exposure to cyanotoxins; in general, the mineral content decreased with MC-LR and increased with CYN, and apparently these effects are time and concentration-dependent. The effects of the MC-LR/CYN mixture were almost always similar to the single cyanotoxins, although MC-LR seems to be more toxic than CYN. Our results suggest that lettuce plants in non-early stages of development are able to cope with lower concentrations of MC-LR, CYN and the MC-LR/CYN mixture; however, higher concentrations (100 µg/L) can affect both lettuce yield and nutritional quality.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ecoenv.2015.02.002pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/14339
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationStrategic Project - LA 15 - 2011-2012
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0147651315000469?via%3Dihubpt_PT
dc.subjectAntioxidantspt_PT
dc.subjectBacterial Toxinspt_PT
dc.subjectLettucept_PT
dc.subjectMicrocystinspt_PT
dc.subjectMineralspt_PT
dc.subjectOxidative Stresspt_PT
dc.subjectPlant Leavespt_PT
dc.subjectPlant Rootspt_PT
dc.subjectUracilpt_PT
dc.titleEffects of microcystin-LR, cylindrospermopsin and a microcystin-LR/cylindrospermopsin mixture on growth, oxidative stress and mineral content in lettuce plants (Lactuca sativa L.)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - LA 15 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F85490%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6820 - DCRRNI ID/PEst-C%2FMAR%2FLA0015%2F2011/PT
oaire.citation.endPage67pt_PT
oaire.citation.startPage59pt_PT
oaire.citation.titleEcotoxicology and Environmental Safetypt_PT
oaire.citation.volume116pt_PT
oaire.fundingStreamSFRH
oaire.fundingStream6820 - DCRRNI ID
person.familyNameFreitas
person.familyNamePinto
person.givenNameMarisa
person.givenNameEdgar
person.identifier.ciencia-id131C-AD64-7E5F
person.identifier.ciencia-id271F-B7DF-8FAB
person.identifier.orcid0000-0003-1886-4942
person.identifier.orcid0000-0002-8021-4783
person.identifier.scopus-author-id7102366695
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationee4b4693-5911-46e5-9247-129bafa5a864
relation.isAuthorOfPublicationeaf9fc86-1a1c-437f-adee-d28040aa7f2f
relation.isAuthorOfPublication.latestForDiscoveryeaf9fc86-1a1c-437f-adee-d28040aa7f2f
relation.isProjectOfPublication2ce7e656-0934-4866-97cf-c1b608692ebc
relation.isProjectOfPublicationd8562b80-78ea-4d63-9b7a-47c2940bc026
relation.isProjectOfPublication.latestForDiscoveryd8562b80-78ea-4d63-9b7a-47c2940bc026

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
ART_MarisaFreitas_2015.pdf
Size:
672.7 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ESS - SA - Artigos