Mercury toxicity affects oxidative metabolism and induces stress responsive mechanisms in wheat (Triticum aestivum L.)

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dc.authoridCatav, Sukru Serter/0000-0002-9934-254X
dc.contributor.authorIskil, Rabia
dc.contributor.authorSurgun-Acar, Yonca
dc.contributor.authorCatav, Sukru Serter
dc.contributor.authorZemheri-Navruz, Fahriye
dc.contributor.authorErden, Yavuz
dc.date.accessioned2025-01-27T21:03:36Z
dc.date.available2025-01-27T21:03:36Z
dc.date.issued2022
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractMercury (Hg) toxicity is an increasing problem worldwide, with a negative impact on the environment and living organisms including both animals and plants. In this study, we analyzed molecular and biochemical changes related to Hg toxicity in wheat (Triticum aestivum L.) seedlings. Seven-day-old seedlings were exposed to various concentrations (5, 10, and 20 mu M) of HgCl2 for 24 and 48 h. Our results showed that HgCl2 treatments led to an increase in the Hg content of wheat leaves in a time- and concentration-dependent manner. Furthermore, significant increases were observed in hydrogen peroxide, malondialdehyde, and proline contents in response to Hg toxicity. While all HgCl2 treatments decreased the level of superoxide dismutase (SOD), the level of catalase (CAT) was reduced only in seedlings exposed to 5 mu M of HgCl2. Mercury stress caused a decline in the expression of Cu/Zn-SOD, Fe-SOD, TaWRKY19, and TaDREB1 genes at both exposure times. On the other hand, 10 and 20 mu M HgCl2 treatments caused significant induction (1.9 to 6.1-fold) in the expression of the CAT gene in wheat leaves. The mRNA level of the Mn-SOD and TaWRKY2 genes showed different patterns depending on the concentration and exposure period of HgCl2. In conclusion, the findings of this work demonstrate that Hg toxicity causes oxidative damage in wheat seedlings and changes the expression of some genes encoding WRKY and DREB transcription factor families, which have important functions in abiotic stress response.
dc.identifier.doi10.1007/s12298-022-01171-x
dc.identifier.endpage920
dc.identifier.issn0971-5894
dc.identifier.issn0974-0430
dc.identifier.issue4
dc.identifier.pmid35592475
dc.identifier.scopus2-s2.0-85127676991
dc.identifier.scopusqualityQ1
dc.identifier.startpage911
dc.identifier.urihttps://doi.org/10.1007/s12298-022-01171-x
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27366
dc.identifier.volume28
dc.identifier.wosWOS:000779216800001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofPhysiology and Molecular Biology of Plants
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectWheat
dc.subjectMercury toxicity
dc.subjectAntioxidant enzymes
dc.subjectOxidative stress
dc.subjectGene expression
dc.subjectTranscription factors
dc.titleMercury toxicity affects oxidative metabolism and induces stress responsive mechanisms in wheat (Triticum aestivum L.)
dc.typeArticle

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