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Response to Cadmium Toxicity: Orchestration of Polyamines and microRNAs in Maize Plant

cris.lastimport.scopus2025-10-23T06:59:47Z
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dc.abstract.enCadmium (Cd) is a heavy metal that is widely contaminating the environment due to its uses in industries as corrosive reagents, paints, batteries, etc. Cd can easily be absorbed through plant roots and may have serious negative impacts on plant growth. To investigate the mechanisms utilized by plants to cope with Cd toxicity, an experiment was conducted on maize seedlings. We observed that the plant growth and photosynthetic mechanism were negatively influenced during 20 days of Cd stress. The expression levels of ornithine decarboxylase (ORDC) increased in the six seedlings under Cd exposure compared to the control. However, Cd toxicity led to an increase in putrescine (Put) content only on day 15 when compared to the control plants. In fact, with the exception of day 15, the increases in the ORDC transcript levels did not show a direct correlation with the observed increases in Put content. Spermidine and Spermine levels were reduced on day 6 by Cd application, which was parallel with suppressed Spermidine synthase gene. However, an increase in Spermidine and Spermine levels was observed on day 12 along with a significant elevation in Spermidine synthase expression. On day 6, Cd was observed to start accumulating in the root with an increase in the expression of microRNA 528; while on day 15, Cd started to be observed in the shoot part with an increase in microRNA 390 and microRNA 168. These results imply that different miRNAs may regulate polyamines (PAs) in maize under Cd toxicity, suggesting a plant-derived strategy to commit a PAs/miRNA-regulated mechanism/s in different developmental stages (time points) in response to Cd exposure.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliation.instituteKatedra Ekologii i Ochrony Środowiska
dc.contributor.authorHassani, Seyedeh Batool
dc.contributor.authorLatifi, Mojgan
dc.contributor.authorAliniaeifard, Sasan
dc.contributor.authorBonab, Shabnam Sohrabi
dc.contributor.authorAlmanghadim, Neda Nasiri
dc.contributor.authorJafari, Sara
dc.contributor.authorMohebbifar, Elham
dc.contributor.authorAhangir, Anahita
dc.contributor.authorSeifikalhor, Maryam
dc.contributor.authorRezadoost, Hassan
dc.contributor.authorBosacchi, Massimo
dc.contributor.authorRastogi, Anshu
dc.contributor.authorBernard, Françoise
dc.date.access2025-08-22
dc.date.accessioned2025-09-16T10:22:16Z
dc.date.available2025-09-16T10:22:16Z
dc.date.copyright2023-05-15
dc.date.issued2023
dc.description.abstract<jats:p>Cadmium (Cd) is a heavy metal that is widely contaminating the environment due to its uses in industries as corrosive reagents, paints, batteries, etc. Cd can easily be absorbed through plant roots and may have serious negative impacts on plant growth. To investigate the mechanisms utilized by plants to cope with Cd toxicity, an experiment was conducted on maize seedlings. We observed that the plant growth and photosynthetic mechanism were negatively influenced during 20 days of Cd stress. The expression levels of ornithine decarboxylase (ORDC) increased in the six seedlings under Cd exposure compared to the control. However, Cd toxicity led to an increase in putrescine (Put) content only on day 15 when compared to the control plants. In fact, with the exception of day 15, the increases in the ORDC transcript levels did not show a direct correlation with the observed increases in Put content. Spermidine and Spermine levels were reduced on day 6 by Cd application, which was parallel with suppressed Spermidine synthase gene. However, an increase in Spermidine and Spermine levels was observed on day 12 along with a significant elevation in Spermidine synthase expression. On day 6, Cd was observed to start accumulating in the root with an increase in the expression of microRNA 528; while on day 15, Cd started to be observed in the shoot part with an increase in microRNA 390 and microRNA 168. These results imply that different miRNAs may regulate polyamines (PAs) in maize under Cd toxicity, suggesting a plant-derived strategy to commit a PAs/miRNA-regulated mechanism/s in different developmental stages (time points) in response to Cd exposure.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if70
dc.description.number10
dc.description.points4,0
dc.description.versionfinal_published
dc.description.volume12
dc.identifier.doi10.3390/plants12101991
dc.identifier.issn2223-7747
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/4814
dc.identifier.weblinkhttps://www.mdpi.com/2223-7747/12/10/1991
dc.languageen
dc.relation.ispartofPlants
dc.relation.pagesart. 1991
dc.rightsCC-BY
dc.sciencecloudsend
dc.share.typeOPEN_JOURNAL
dc.subject.encadmium stress
dc.subject.enmicroRNAs
dc.subject.enphotosynthesis
dc.subject.enputrescine
dc.subject.enZea mays L.
dc.titleResponse to Cadmium Toxicity: Orchestration of Polyamines and microRNAs in Maize Plant
dc.title.volumeSpecial Issue Photosynthesis under Climatic Extremes
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue10
oaire.citation.volume12