Show simple item record

dc.creatorDragišić Maksimović, Jelena
dc.creatorBogdanović Pristov, Jelena
dc.creatorMaksimović, Vuk
dc.creatorNikolic, Miroslav
dc.date.accessioned2022-04-05T14:10:03Z
dc.date.available2022-04-05T14:10:03Z
dc.date.issued2007
dc.identifier.issn1436-8730
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/177
dc.description.abstractCucumber plants (Cucumis sativus L. cv. Chinese long) were grown in nutrient solution with increasing manganese (Mn) concentrations (0.5, 50, and 100 mu M) with (+Si) or without silicon (-Si) supplied as silicic acid at 1.5 mM. High external Mn supply induced both growth inhibition of the whole plant and the appearance of Mn-toxicity symptoms in the leaves. The application of Si alleviated Mn toxicity by increasing the biomass production. Although the total Mn concentration in the leaves did not differ significantly between +Si and -Si plants, symptoms of Mn toxicity were not observed in Si-treated plants. The concentrations of phenolic compounds, particularly in the leaf extracts of cucumber plants grown at high external Mn concentrations, differed from those of plants grown without Si. The increased tissue concentrations of phenols (e.g., coniferyl alcohol, coumaric and ferulic acids) were in agreement with enhanced enzymes activities, i.e., peroxidases (PODs) and polyphenol oxidases (PPO) in the tissues of -Si plants. The activities of both enzymes were kept at a lower level in the tissue extracts of +Si plants grown at high external Mn concentrations. These results suggest that Si nutrition modulates the metabolism and utilization of phenolic compounds mainly at the leaf level, most probably as a consequence of the formation of Si-polyphenol complexes.en
dc.publisherWiley-V C H Verlag Gmbh, Weinheim
dc.rightsrestrictedAccess
dc.sourceJournal of Plant Nutrition and Soil Science
dc.subjectsiliconen
dc.subjectpolyphenol oxidaseen
dc.subjectphenolic compoundsen
dc.subjectperoxidaseen
dc.subjectmanganese toxicityen
dc.titleSilicon modulates the metabolism and utilization of phenolic compounds in cucumber (Cucumis sativus L.) grown at excess manganeseen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage744
dc.citation.issue6
dc.citation.other170(6): 739-744
dc.citation.rankM22
dc.citation.spage739
dc.citation.volume170
dc.identifier.doi10.1002/jpln.200700101
dc.identifier.scopus2-s2.0-38149058218
dc.identifier.wos000251848500004
dc.type.versionpublishedVersion


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record