Repository logo
 
Publication

Physiological and biochemical responses of Suaeda fruticosa to cadmium and copper stresses: growth, nutrient uptake, antioxidant enzymes, phytochelatin, and glutathione levels

2015Journal article Restricted access
Simple item page
dc.contributor.authorBankaji, I.
dc.contributor.authorCaçador, Isabel
dc.contributor.authorSleimi, N.
dc.date.accessioned2020-01-19T18:19:42Z
dc.date.available2020-01-19T18:19:42Z
dc.date.issued2015
dc.description.abstractEnvironmental pollution by trace metal elements (TMEs) is a serious problem worldwide, increasing in parallel with the development of human technology. The present research aimed to examine the response of halophytic species Suaeda fruticosa to oxidative stress posed by combined abiotic stresses. Plants have been grown for 1 month with an irrigation solution supplemented with 200 mM NaCl and 400 μM Cd2+ or 400 μM Cu2+. The level of glutathione (GSH), phytochelatins (PCs), and antioxidant enzyme activities [ascorbate peroxidase (APX), guaiacol peroxidase (GPX), and catalase (CAT)] as well as lipid peroxidation was studied to see the stress exerted by the TME and the level of tolerance and detoxification strategy adopted by S. fruticosa. Relative growth rate (RGR) decreased under Cd2+ stress in this species, whereas Cu2+ did not have any impact on S. fruticosa performance. Cd2+ or Cu2+ enhanced malondialdehyde, suggesting reactive oxygen species-induced disruption of membrane integrity and oxidative stress in S. fruticosa. On the other hand, the activities of the antioxidant enzymes CAT, APX, and GPX diminished and mineral nutrition was disturbed by metal stress. S. fruticosa was able to synthesize PCs in response to TME toxicity. However, data indicate that GSH levels underwent a significant decrease in roots and leaves of S. fruticosa stressed by Cd2+ or Cu2+. The GSH depletion accompanied by the increase of phytochelatin concentration suggests the involvement of GSH in the synthesis of phytochelatins.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s11356-015-4414-xpt_PT
dc.identifier.issn0944-1344
dc.identifier.urihttp://hdl.handle.net/10451/41064
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectSuaeda fruticosapt_PT
dc.subjectCd and Cu toxicitypt_PT
dc.subjectAntioxidant enzymespt_PT
dc.subjectGlutathionept_PT
dc.subjectCd accumulationpt_PT
dc.subjectGrowth ratept_PT
dc.titlePhysiological and biochemical responses of Suaeda fruticosa to cadmium and copper stresses: growth, nutrient uptake, antioxidant enzymes, phytochelatin, and glutathione levelspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage13069pt_PT
oaire.citation.issue17pt_PT
oaire.citation.startPage13058pt_PT
oaire.citation.titleEnvironmental Science and Pollution Researchpt_PT
oaire.citation.volume22pt_PT
person.familyNameCaçador
person.givenNameIsabel
person.identifier.ciencia-id631C-9FFE-CA81
person.identifier.orcid0000-0002-4475-6091
person.identifier.ridC-2618-2012
person.identifier.scopus-author-id6602533871
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication02ecb390-88b9-4e2f-8690-eba66c3b5311
relation.isAuthorOfPublication.latestForDiscovery02ecb390-88b9-4e2f-8690-eba66c3b5311

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
MARE_ULisboa_EnvironmentalSciencePollutionResearch_22(17)_2015_13058-13069.pdf
Size:
746.26 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.2 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

MARE - Artigos em Revistas Internacionais