Publicação
Young tomato plants respond differently under single or combined mild nitrogen and water deficit: an insight into morphophysiological responses and primary metabolism
| dc.contributor.author | Machado, Joana | |
| dc.contributor.author | Vasconcelos, Marta W. | |
| dc.contributor.author | Soares, Cristiano | |
| dc.contributor.author | Fidalgo, Fernanda | |
| dc.contributor.author | Heuvelink, Ep | |
| dc.contributor.author | Carvalho, Susana M.P. | |
| dc.date.accessioned | 2023-03-22T12:40:03Z | |
| dc.date.available | 2023-03-22T12:40:03Z | |
| dc.date.issued | 2023-03-05 | |
| dc.description.abstract | This study aimed to understand the morphophysiological responses and primary metabolism of tomato seedlings subjected to mild levels of nitrogen and/or water deficit (50% N and/or 50% W). After 16 days of exposure, plants grown under the combined deficit showed similar behavior to the one found upon exposure to single N deficit. Both N deficit treatments resulted in a significantly lower dry weight, leaf area, chlorophyll content, and N accumulation but in a higher N use efficiency when compared to control (CTR) plants. Moreover, concerning plant metabolism, at the shoot level, these two treatments also responded in a similar way, inducing higher C/N ratio, nitrate reductase (NR) and glutamine synthetase (GS) activity, expression of RuBisCO encoding genes as well as a downregulation of GS2.1 and GS2.2 transcripts. Interestingly, plant metabolic responses at the root level did not follow the same pattern, with plants under combined deficit behaving similarly to W deficit plants, resulting in enhanced nitrate and proline concentrations, NR activity, and an upregulation of GS1 and NR genes than in CTR plants. Overall, our data suggest that the N remobilization and osmoregulation strategies play a relevant role in plant acclimation to these abiotic stresses and highlight the complexity of plant responses under a combined N+W deficit. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.doi | 10.3390/plants12051181 | pt_PT |
| dc.identifier.eid | 85149995317 | |
| dc.identifier.issn | 2223-7747 | |
| dc.identifier.pmc | PMC10005627 | |
| dc.identifier.pmid | 36904041 | |
| dc.identifier.uri | http://hdl.handle.net/10400.14/40679 | |
| dc.identifier.wos | 000948054800001 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Combined abiotic stresses | pt_PT |
| dc.subject | Gene expression | pt_PT |
| dc.subject | N-metabolism | pt_PT |
| dc.subject | Osmoregulation | pt_PT |
| dc.subject | Solanum lycopersicum | pt_PT |
| dc.title | Young tomato plants respond differently under single or combined mild nitrogen and water deficit: an insight into morphophysiological responses and primary metabolism | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 5 | pt_PT |
| oaire.citation.title | Plants | pt_PT |
| oaire.citation.volume | 12 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |