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dc.contributor.authorAltuntaş, Cansu
dc.contributor.authorDemiralay, Mehmet
dc.contributor.authorMuslu, Asiye Sezgin
dc.contributor.authorTerzi, Rabiye
dc.date.accessioned2020-03-09T07:13:28Z
dc.date.available2020-03-09T07:13:28Z
dc.date.issued2020en_US
dc.identifier.citationAltuntaş, C., Demiralay, M., Sezgin Muslu, A., & Terzi, R. (2020). Proline-stimulated signaling primarily targets the chlorophyll degradation pathway and photosynthesis associated processes to cope with short-term water deficit in maize. Photosynthesis Research: Official Journal of the International Society of Photosynthesis Research, 144(1), pp. 35-48, https://doi.org/10.1007/s11120-020-00727-wen_US
dc.identifier.urihttps://doi.org/10.1007/s11120-020-00727-w
dc.identifier.urihttps://hdl.handle.net/11494/1999
dc.description.abstractIncreased photosynthetic efficiencies in genotypes with greater proline level and in crops treated with proline under water deficit have been reported in recent years, but the biochemical and molecular mechanisms of this process are still not known. We examined photosystem II (PSII) activity, photosynthetic enzymes, ribulose 1,5-bisphosphate carboxylase/oxygenase (rubisco), phosphoenolpyruvate carboxylase (PEPc), rubisco activase (RCA), and chlorophyll metabolic enzymes, magne-sium chelatase (Mg-CHLI), and chlorophyllase (Chlase), which would be the primary targets of exogenous proline to provide photosynthetic protection to plants under PEG-induced short-term water deficit. Two maize genotypes W23/M14 with greater proline content and Şafak with low proline content were hydroponically grown for 21–23 days, and then the seedlings were subjected to water deficit (− 0.75 MPa) induced by PEG6000 for 0, 4, and 8 h. Before the seedlings were exposed to the water deficit, proline (1 mM) was applied to the rooting medium of the Şafak genotype for 2 days. The time course effects of the applications showed that exogenous proline significantly enhanced PSII efficiency, PEPc activity, rubisco activity, and the relative expression levels of PEPc, rubisco large subunit, rubisco small subunit, and RCA genes at 0, 4, and 8 h. The W23/M14 genotype had higher rubisco quantity than the Şafak genotype at all time periods. Proline pre-treatment under the stress-free and PEG conditions reduced the activity of Chlase and the gene expressions of Chlase, while it enhanced Mg-CHLIgene expression at 0, 4, and 8 h. Taken together, the results indicated that the primary target of proline-stimulated signaling in maize seedlings exposed to short-term severe water deficit may be to induce PSII efficiency, activities of carbon dioxide fixation enzymes and chlorophyll metabolism and mitigate chlorophyll degradation.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectWater deficiten_US
dc.subjectProline treatmenten_US
dc.subjectPhotosynthesisen_US
dc.subjectRubiscoen_US
dc.subjectMagnesium chelataseen_US
dc.subjectChlorophyllaseen_US
dc.subjectGene expressionen_US
dc.titleProline-stimulated signaling primarily targets the chlorophyll degradation pathway and photosynthesis associated processes to cope with short-term water deficit in maizeen_US
dc.typearticleen_US
dc.relation.journalPhotosynthesis Researchen_US
dc.departmentAÇÜ, Orman Fakültesien_US
dc.authorid0000-0001-6528-4591en_US
dc.identifier.volume144
dc.identifier.issue1
dc.identifier.startpage35
dc.identifier.endpage48
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1007/s11120-020-00727-wen_US
dc.contributor.institutionauthorDemiralay, Mehmeten_US


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