Show simple item record

dc.contributor.authorQin, Haiyan
dc.contributor.authorArteaga López, Carles
dc.contributor.authorChowdhury, Faqrul Islam
dc.contributor.authorGranda, Elena
dc.contributor.authorYao, Yinan
dc.contributor.authorHan, Ying
dc.contributor.authorResco de Dios, Víctor
dc.description.abstractStomatal closure is one of the earliest responses to water stress but residual water losses may continue through the cuticle and incomplete stomatal closure. Residual conductance (gres) plays a large role in determining time to mortality but we currently do not understand how do drought and shade interact to alter gres because the underlying drivers are largely unknown. Furthermore, gres may play an important role in models of water use, but the exact form in which gres should be incorporated into modeling schemes is currently being discussed. Here we report the results of a study where two different oak species were experimentally subjected to highly contrasting levels of drought (resulting in 0, 50 and 80% losses of hydraulic conductivity) and radiation (photosynthetic photon flux density at 1,500 μmol m–2 s–1 or 35–45 μmol m–2 s–1). We observed that the effects of radiation and drought were interactive and species-specific and gres correlated positively with concentrations of leaf non-structural carbohydrates and negatively with leaf nitrogen. We observed that different forms of measuring gres, based on either nocturnal conductance under high atmospheric water demand or on the water mass loss of detached leaves, exerted only a small influence on a model of stomatal conductance and also on a coupled leaf gas exchange model. Our results indicate that, while understanding the drivers of gres and the effects of different stressors may be important to better understand mortality, small differences in gres across treatments and measurements exert only a minor impact on stomatal models in two closely related species.ca_ES
dc.description.sponsorshipWe acknowledge funding from the Natural Science Foundation in China (31850410483), the talent proposals from Sichuan Province (2020JDRC0065), the Southwest University of Science and Technology talents fund (18ZX7131), and the Spanish MICINN (AGL2015-69151-R). EG is supported by MCIU/AEI/FEDER, UE [Postdoctoral Contract (IJCI-2017-32511)].ca_ES
dc.publisherFrontiers Mediaca_ES
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofFrontiers in Plant Science, 2020, vol. 11, article 603581ca_ES
dc.rightscc-by, (c) Qin et al., 2020ca_ES
dc.subjectCuticular conductanceca_ES
dc.subjectStomatal conductanceca_ES
dc.subjectNight conductanceca_ES
dc.subjectDark respirationca_ES
dc.titleRadiation and Drought Impact Residual Leaf Conductance in Two Oak Species With Implications for Water Use Modelsca_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

cc-by, (c) Qin et al., 2020
Except where otherwise noted, this item's license is described as cc-by, (c) Qin et al., 2020