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dc.creatorDanilović Luković, Jelena
dc.creatorZechmann, Bernd
dc.creatorJevtović, Mima
dc.creatorBogdanović Pristov, Jelena
dc.creatorStanić, Marina
dc.creatorMarco Lizzul, Alessandro
dc.creatorPittman, Jon K.
dc.creatorSpasojević, Ivan
dc.date.accessioned2020-11-04T09:16:38Z
dc.date.available2020-11-04T09:16:38Z
dc.date.issued2020
dc.identifier.issn0045-6535
dc.identifier.urihttp://cherry.chem.bg.ac.rs/handle/123456789/4241
dc.description.abstractThe impact of ionizing radiation on microorganisms such as microalgae is a topic of increasing importance for understanding the dynamics of aquatic ecosystems in response to environmental radiation, and for the development of efficient approaches for bioremediation of mining and nuclear power plants wastewaters. Currently, nothing is known about the effects of ionizing radiation on the microalgal cell wall, which represents the first line of defence against chemical and physical environmental stresses. Using various microscopy, spectroscopy and biochemical techniques we show that the unicellular alga Chlorella sorokiniana elicits a fast response to ionizing radiation. Within one day after irradiation with doses of 1–5 Gy, the fibrilar layer of the cell wall became thicker, the fraction of uronic acids was higher, and the capacity to remove the main reactive product of water radiolysis increased. In addition, the isolated cell wall fraction showed significant binding capacity for Cu2+, Mn2+, and Cr3+. The irradiation further increased the binding capacity for Cu2+, which appears to be mainly bound to glucosamine moieties within a chitosan-like polymer in the outer rigid layer of the wall. These results imply that the cell wall represents a dynamic structure that is involved in the protective response of microalgae to ionizing radiation. It appears that microalgae may exhibit a significant control of metal mobility in aquatic ecosystems via biosorption by the cell wall matrix.
dc.publisherElsevier
dc.relationThe NATO Science for Peace and Security Programme , Project number G5320
dc.rightsrestrictedAccess
dc.sourceChemosphere
dc.subjectAlga
dc.subjectCell wall
dc.subjectCopper
dc.subjectRadiation
dc.titleThe effects of ionizing radiation on the structure and antioxidative and metal-binding capacity of the cell wall of microalga Chlorella sorokiniana
dc.typearticle
dc.rights.licenseARR
dcterms.abstractПиттман, Јон К.; Станић, Марина; Спасојевић, Иван; Зецхманн, Бернд; Луковић, Јелена Даниловић; Јевтовић, Мима; Пристов, Јелена Богдановић; Лиззул, Aлессандро Марцо;
dc.citation.volume260
dc.citation.spage127553
dc.identifier.wos000575197000040
dc.identifier.doi10.1016/j.chemosphere.2020.127553
dc.citation.rankM21~
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-85087709447


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