Physiological and biochemical responses of osmo-primed parsley seeds subjected to saline stress

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dc.contributor.authorManjavachi, Matheus Kainan de Paula [UNESP]
dc.contributor.authorSilva, Tiago Alexandre [UNESP]
dc.contributor.authorGuimarães, Cristiane Carvalho [UNESP]
dc.contributor.authorSartori, Maria Márcia Pereira [UNESP]
dc.contributor.authorda Silva, Edvaldo Aparecido Amaral [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-05-01T15:46:13Z
dc.date.available2022-05-01T15:46:13Z
dc.date.issued2022-01-01
dc.description.abstractWater and salt stress conditions affect germination and seedling emergence. It is known that physiological priming can not only trigger different mechanisms to increase the speed and uniformity of germination, but also influence the antioxidant defence system of the seeds, especially in adverse conditions. In this context, the objective of this work was to evaluate the physiological seed quality and the activity of antioxidant enzymes in seeds of Petroselinum crispum induced to tolerate saline stress through osmo-priming. Seeds were placed in polyethylene glycol solutions with three osmotic potentials (-0.5,-1.0 or-1.5 MPa) for 2, 4 or 6 days. Subsequently, they were placed on substrates moistened with sodium chloride solution (NaCl), in concentrations that generated osmotic potentials of-0.2,-0.4,-0.6,-0.8 or-1.0 MPa, to germinate. The germination percentage, germination speed index, seedling length, fresh weight, dry weight and activity of the antioxidant enzymes superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were evaluated. Germination and germination speed index decreased linearly with the increase in NaCl concentrations, indicating the species sensitivity. As for length, fresh weight and dry weight of seedlings, this effect was more expressive from the potential of-0.4 MPa. The vigour and activity of SOD, POD, and CAT enzymes were reduced in unprimed seeds, emphasising the effectiveness of the technique. The induction of tolerance to saline stress can be related to the activity of the antioxidant system observed in seeds.en
dc.description.affiliationDepartamento de Produção Vegetal Universidade Estadual Paulista, Rua Professor Doutor Mauro Rodrigues de Oliveira, s/n., São Paulo
dc.description.affiliationUnespDepartamento de Produção Vegetal Universidade Estadual Paulista, Rua Professor Doutor Mauro Rodrigues de Oliveira, s/n., São Paulo
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 17/05392-5
dc.identifierhttp://dx.doi.org/10.4025/actasciagron.v44i1.54364
dc.identifier.citationActa Scientiarum - Agronomy, v. 44.
dc.identifier.doi10.4025/actasciagron.v44i1.54364
dc.identifier.issn1807-8621
dc.identifier.issn1679-9275
dc.identifier.scopus2-s2.0-85126617025
dc.identifier.urihttp://hdl.handle.net/11449/234283
dc.language.isoeng
dc.relation.ispartofActa Scientiarum - Agronomy
dc.sourceScopus
dc.subjectAntioxidant system
dc.subjectPetroselinum crispum
dc.subjectPrimed seeds
dc.subjectVigour
dc.titlePhysiological and biochemical responses of osmo-primed parsley seeds subjected to saline stressen
dc.typeArtigo

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