<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Flexas, J.</style></author><author><style face="normal" font="default" size="100%">Diaz-Espejo, a</style></author><author><style face="normal" font="default" size="100%">Gago, J.</style></author><author><style face="normal" font="default" size="100%">Gallé, a</style></author><author><style face="normal" font="default" size="100%">Galmés, J.</style></author><author><style face="normal" font="default" size="100%">Gulías, J.</style></author><author><style face="normal" font="default" size="100%">Medrano, H.</style></author><author><style face="normal" font="default" size="100%">Díaz-Espejo, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Photosynthetic limitations in mediterranean plants: A review</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental and Experimental Botany</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">biochemical limitation</style></keyword><keyword><style  face="normal" font="default" size="100%">chilling</style></keyword><keyword><style  face="normal" font="default" size="100%">Drought</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean</style></keyword><keyword><style  face="normal" font="default" size="100%">mesophyll conductance limitation</style></keyword><keyword><style  face="normal" font="default" size="100%">stomatal limitation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2013///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0098847213001238http://linkinghub.elsevier.com/retrieve/pii/S0098847213001238</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The aim of the present work is to review the literature concerning photosynthesis of Mediterranean plants. First, we briefly review the most important environmental constraints to photosynthesis, i.e. chilling winter temperatures and summer drought. Then, the review specifically focus on the photosynthetic capacity and photosynthetic limitations of Mediterranean plants under non-stress conditions, to test the general assumption that that the photosynthetic capacity of Mediterranean plants is lower than that of plants from other biomes. It is shown that Mediterranean plants of different life forms and leaf types present, on average, similar photosynthetic capacity to plants from any other biome. However, the mechanisms potentially limiting maximum photosynthesis differ between Mediterranean and non-Mediterranean species. For instance, Mediterranean plants compensate their lower mesophyll conductance to CO2 (gm) with a larger velocity of carboxylation (Vc,max) to achieve similar photosynthesis rates (AN) to non-Mediterranean plants, both factors being associated to a larger leaf mass area (LMA) in Mediterranean species. In contrast, stomatal conductance (gs) was found to be lower only in Mediterranean sclerophytes. On the other hand, Mediterranean sclerophytes and malacophytes (but not herbs and mesophytes) show higher mean intrinsic water use efficiency (AN / gs) due to a combination of higher gm / gs and AN per unit CO2 concentration in the chloroplasts, i.e. carboxylation efficiency. represent specific adaptations of Mediterranean plants to their environment, leading these plants to achieve high AN despite their large LMA, and Mediterranean ecosystems to be Accepted Manuscript The described variations in the mechanistic components of photosynthesis may among those presenting the largest net primary productivities worldwide</style></abstract><notes><style face="normal" font="default" size="100%">The following values have no corresponding Zotero field:&lt;br/&gt;publisher: Elsevier B.V.</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gulías, J.</style></author><author><style face="normal" font="default" size="100%">Cifre, J.</style></author><author><style face="normal" font="default" size="100%">Jonasson, S.</style></author><author><style face="normal" font="default" size="100%">Medrano, H.</style></author><author><style face="normal" font="default" size="100%">Flexas, J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Seasonal and inter-annual variations of gas exchange in thirteen woody species along a climatic gradient in the Mediterranean island of Mallorca</style></title><secondary-title><style face="normal" font="default" size="100%">Flora - Morphology, Distribution, Functional Ecology of Plants</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">evergreen sclerophyllous species</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean shrubs</style></keyword><keyword><style  face="normal" font="default" size="100%">Mediterranean trees</style></keyword><keyword><style  face="normal" font="default" size="100%">photosynthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">summer drought</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><volume><style face="normal" font="default" size="100%">204</style></volume><pages><style face="normal" font="default" size="100%">169-181</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We studied the inﬂuence of summer drought and winter temperatures on seasonal and spatial variations of lightsaturated net photosynthesis and stomatal conductance in Mediterranean woody species. We measured variations in leaf gas exchange over 3 years in 13 Mediterranean trees and shrubs, located at four different sites along a climate gradient of temperature and precipitation in the island of Mallorca (West Mediterranean basin). Net photosynthesis and stomatal conductance were at a maximum during spring, autumn or winter and at a minimum during summer in most sites, species and years. Nevertheless, important spatial, temporal and species-speciﬁc variations were observed. Summer drought limitation to gas exchange was greatest in the dry part of the transect, where many species showed their maximum gas exchange rate during winter. In contrast, winter temperatures limited gas exchange of many species at the wet and cool end of the transect, while summer depression of gas exchange was shorter and less pronounced. These results suggest that the effect on carbon ﬁxation and productivity by the predicted future increase of aridity in the Mediterranean basin will depend on whether gas exchange is mostly limited by summer drought or by low winter temperatures.</style></abstract></record></records></xml>