Humic acid protects against oxidative damage induced by cadmium toxicity in wheat (Triticum aestivum) roots through water management and the antioxidant defence system

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dc.contributor.authorYildiztugay, Evren.
dc.contributor.authorOzfidan Konakci, Ceyda.
dc.contributor.authorElbasan, Fevzi.
dc.contributor.authorYildiztugay, Aysegul.
dc.contributor.authorKucukoduk, Mustafa.
dc.date.accessioned2020-03-26T20:14:32Z
dc.date.available2020-03-26T20:14:32Z
dc.date.issued2019
dc.departmentSelçuk Üniversitesi, Fen Fakültesi, Biyoteknoloji Bölümüen_US
dc.description.abstractHumic compounds like humic acid (HA) promote ecosystem health by stabilising soil structure and promoting plant development. However, the amount needed is a limiting factor. The use of biostimulants based on HA is an effective way to eliminate oxidative damage caused by heavy metals such as cadmium (Cd) in plants. The aim of this study was to assess the effects of humic acid (HA; 750 and 1500 mg L-1) on growth, the osmotic potential, the antioxidant system, radical content and lipid peroxidation in wheat (Triticum aestivum) roots treated alone or in combination with Cd stress (100 and 200 mu M). Cadmium-treated wheat roots showed a reduction in growth (RGR) and the osmotic potential (Psi(Pi)) and an increase in proline content (Pro). Although 100-mu M Cd stress induced the activities of catalase (CAT) and ascorbate peroxidase (APX), hydrogen peroxide (H2O2) accumulation in roots exposed to stress was not prevented. The membrane of roots showed stress-dependent lipid peroxidation (TBARS content). Application of HA in combination with stress alleviated RGR and Psi(Pi) by promoting water intake. Humic acid reduced levels of H2O2 and TBARS through activation of superoxide dismutase (SOD) and CAT. Application of HA under stress also induced enzymes and non-enzymatic substances included in the ascorbate-glutathione cycle such as APX, monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione (GSH), in addition to which it increased GSH/GSSG ratios. These results indicate that HA alleviated the negative effects of Cd-induced oxidative damage in wheat roots through regulation of growth, osmotic adjustment, radical accumulation and the action of antioxidant systems.en_US
dc.description.sponsorshipSelcuk University Scientific Research Project Coordinating Office [15401012]en_US
dc.description.sponsorshipThe authors are grateful to Assistant Professors Dr. Robert Waller Murdoch and Dr. Fadime Kara Murdoch for helpful comments suggesting ways to improve the manuscript. Financial support for this work was provided by the Selcuk University Scientific Research Project Coordinating Office (Project Number 15401012).en_US
dc.identifier.citationYildiztugay, E., Konakci, C. O., Elbasan, F., Yildiztugay, A., Kucukoduk, M. (2019). Humic Acid Protects Against Oxidative Damage Induced by Cadmium Toxicity in Wheat (Triticum aestivum) Roots Through Water Management and The Antioxidant Defence System. Botanica Serbica, 43(2), 161-173.
dc.identifier.doi10.2298/BOTSERB1902161Yen_US
dc.identifier.endpage173en_US
dc.identifier.issn1821-2158en_US
dc.identifier.issn1821-2638en_US
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage161en_US
dc.identifier.urihttps://dx.doi.org/10.2298/BOTSERB1902161Y
dc.identifier.urihttps://hdl.handle.net/20.500.12395/37894
dc.identifier.volume43en_US
dc.identifier.wosWOS:000504974800006en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorYildiztugay, Evren.
dc.institutionauthorElbasan, Fevzi.
dc.institutionauthorYildiztugay, Aysegul.
dc.institutionauthorKucukoduk, Mustafa.
dc.language.isoenen_US
dc.publisherUNIV BELGRADE, INST BOTANY & BOTANICAL GARDENen_US
dc.relation.ispartofBOTANICA SERBICAen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectascorbate-glutathione cycleen_US
dc.subjecthumic aciden_US
dc.subjectlipid peroxidationen_US
dc.subjectoxidative stressen_US
dc.subjectTriticum aestivumen_US
dc.titleHumic acid protects against oxidative damage induced by cadmium toxicity in wheat (Triticum aestivum) roots through water management and the antioxidant defence systemen_US
dc.typeArticleen_US

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