English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/99351
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Stomatal and mesophyll conductances to CO2 in different plant groups: Underrated factors for predicting leaf photosynthesis responses to climate change?

AuthorsFlexas, Jaume; Carriquí, Marc; Coopman, Rafael E.; Gago, Jorge; Galmés, Jeroni; Martorell, Sebastià; Morales Iribas, Fermín ; Díaz-Espejo, Antonio
KeywordsClimatic change
Mesophyll conductance
Diffusive limitations
Issue Date20-Jun-2014
CitationFlexas J, Carriquí M, Coopman RE, Gago J, Galmés J, Martorell S, Morales F, Díaz-Espejo A. Stomatal and mesophyll conductances to CO2 in different plant groups: underrated factors for predicting leaf photosynthesis responses to climate change? Plant Science 26: 41-48 (2014)
AbstractThe climate change conditions predicted for the end of the current century are expected to have an impact on the performance of plants under natural conditions. The variables which are foreseen to have a larger effect are increased CO2 concentration and temperature. Although it is generally considered CO2 assimilation rate could be increased by the increasing levels of CO2, it has been reported in previous studies that acclimation to high CO2 results in reductions of physiological parameters involved in photosynthesis, like the maximum carboxylation rate (Vc,max), stomatal conductance (gs) and mesophyll conductance to CO2 (gm). On the one hand, most of the previous modeling efforts have neglected the potential role played by the acclimation of gm to high CO2 and temperature. On the other hand, the effect of climate change on plant clades other than angiosperms, like ferns, has received little attention, and there are no studies evaluating the potential impact of increasing CO2 and temperature on these species. In this study we predicted responses of several representative species among angiosperms, gymnosperms and ferns to increasing CO2 and temperature. Our results show that species with lower photosynthetic capacity – such as some ferns and gymnosperms – would be proportionally more favored under these foreseen environmental conditions. The main reason for this difference is the lower diffusion limitation imposed by gs and gm in plants having high capacity for photosynthesis among the angiosperms, which reduces the positive effect of increasing CO2. However, this apparent advantage of low-diffusion species would be canceled if the two conductances – gs and gm – acclimate and are down regulated to high CO2, which is basically unknown, especially for gymnosperms and ferns. Hence, for a better understanding of different plant responses to future climate, studies are urged in which the actual photosynthetic response/acclimation to increased CO2 and temperature of ferns, gymnosperms and other under-evaluated plant groups is assessed.
Description8 Pág., 4 Fig., 1 Tabl. Available online 20 June 2014. The definitive version is available at: http://www.sciencedirect.com/science/article/pii/S0168945214001459
Publisher version (URL)http://dx.doi.org/10.1016/j.plantsci.2014.06.011
Appears in Collections:(EEAD) Artículos
(IRNAS) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.