RT Journal Article
T1 Stomatal traits in Iberian populations of Osmunda regalis (Osmundaceae, Polypodiopsida) and its relationship with bioclimatic variables
A1 Lavilla, Mikel
A1 Seral, Andrea
A1 Murciano, Antonio
A1 Molino, Sonia
A1 De la Fuente, Pablo
A1 Gabriel y Galán, José María
K1 Ecología
AB Stomata are very conserved structures in plants, which allows and control thegas exchange. This ecophysiological fact appears to be critical in the ecologyand adaptation of plants to environment. Plant individuals can, among otherissues, adjust size and density of the stomata to adapt themselves to hydric,thermic and light regimes. In turn, this led to the reduction of transpiration andcontrol of water losses, which is crucial in areas with Mediterranean climate. Thefern Osmunda regalis has populations in both biogeographical regions of theIberian Peninsula (Eurosiberian and Mediterranean regions), but when locationsare highly continental the populations are scarce and isolated. The objective ofthis study is to characterize the stomatal morphological traits in both regions, todetect possible adaptations in individuals occurring in Mediterranean locations.26 individuals of 17 different populations were sampled. Applying microscopictechniques, 4447 observations of length and width, and 234 of density and PCIwere done. The sampling spots were characterized by two bioclimatic indices ofEmberger and Gorzynski, and also mean maximum and minimum temperaturevalues were obtained. All the information was included in a dataset that wasstatistically analyzed with the software SPSS. Our results show that Osmundaregalis fronds have higher PCI and density values in the Eurosiberian region,as expected. Gorczynski continentality index (K), and the mean maximum andminimum annual temperatures influences over stomatal traits. This is clearlyinforming that in the Mediterranean region, the temperature is an importantfactor that triggers stomatal adaptations of O. regalis to continental locations withhigher levels of environmental stress. On the contrary, Emberger pluviometricindex (Q) seems to be less explicative by its own. Perhaps this is related withthe habitat of O. regalis in soils with high freatic level, fact which could...
PB Universidad de Málaga. Servicio de Publicaciones e Intercambio Científico
SN 0210-9506
YR 2017
FD 2017
LK https://hdl.handle.net/10630/15380
UL https://hdl.handle.net/10630/15380
LA eng
NO Acta Botánica, nº42, nº 1, 2017, págs. 5-13
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026