Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/59017
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Rubisco activity in Mediterranean species is regulated by the chloroplastic CO2 concentration under water stress |
Autor: | Galmés, Jeroni; Ribas-Carbó, Miquel; Medrano Gil, Hipólito CSIC ORCID; Flexas, Jaume | Fecha de publicación: | 2011 | Editor: | Oxford University Press | Citación: | Journal of Experimental Botany 62: 653- 665 (2011) | Resumen: | Water stress decreases the availability of the gaseous substrate for ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) by decreasing leaf conductance to CO2. In spite of limiting photosynthetic carbon assimilation, especially in those environments where drought is the predominant factor affecting plant growth and yield, the effects of water deprivation on the mechanisms that control Rubisco activity are unclear. In the present study, 11 Mediterranean species, representing different growth forms, were subject to increasing levels of drought stress, the most severe one followed by rewatering. The results confirmed species-specific patterns in the decrease in the initial activity and activation state of Rubisco as drought stress and leaf dehydration intensified. Nevertheless, all species followed roughly the same trend when Rubisco activity was related to stomatal conductance (gs) and chloroplastic CO2 concentration (Cc), suggesting that deactivation of Rubisco sites could be induced by low Cc, as a result of water stress. The threshold level of Cc that triggered Rubisco deactivation was dependent on leaf characteristics and was related to the maximum attained for each species under non-stressing conditions. Those species adapted to low Cc were more capable of maintaining active Rubisco as drought stress intensified. | URI: | http://hdl.handle.net/10261/59017 | DOI: | 10.1093/jxb/erq303 | Identificadores: | doi: 10.1093/jxb/erq303 issn: 0022-0957 |
Aparece en las colecciones: | (IMEDEA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Rubisco.pdf | 571,31 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
23
checked on 17-abr-2024
SCOPUSTM
Citations
136
checked on 15-abr-2024
WEB OF SCIENCETM
Citations
116
checked on 26-feb-2024
Page view(s)
373
checked on 20-abr-2024
Download(s)
298
checked on 20-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Artículos relacionados:
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.