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Mostrando ítems 1-20 de 41
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Are the rhizosphere fungal communities of Nothofagus alpina established in two different environments influenced by plant genetic diversity?
Fernandez, Natalia Veronica; Marchelli, Paula; Tenreiro, Rogério; Chaves, Sandra; Fontenla, Sonia Beatriz (Elsevier, 2020-10)Fungi are one of the most important soil microorganisms due to their abundance and the importance of the ecosystem processes they carry out, like decomposition, nutrient cycling, and the establishment of biological ... -
Characterization of 23 polymorphic SSR markers in Salix humboldtiana (Salicaceae) using next‐generation sequencing and cross‐amplification from related species
Bozzi, Jorge Alfredo; Liepelt, Sascha; Ohneiser, Sebastian; Gallo, Leonardo Ariel; Marchelli, Paula; Leyer, Ilona; Ziegenhagen, Birgit; Mengel, Christina (Botanical Society of America, 2015-04)Premise of the study: We present a set of 23 polymorphic nuclear microsatellite loci, 18 of which are identified for the first time within the riparian species Salix humboldtiana (Salicaceae) using next‐generation ... -
Clinal variation along precipitation gradients in Patagonian temperate forests: unravelling demographic and selection signatures in three Nothofagus spp.
Soliani, Carolina; Azpilicueta, Maria Marta; Arana, María Veronica; Marchelli, Paula (Springer Nature, 2020-01-10)Past demographic changes and current selection pressures determine the genetic variation displayed by Nothofagus species along rainfall gradients. Based on the diversity trends observed at candidate genes associated to ... -
Crecimiento diferencial de clones de maqui seleccionados en Argentina, según su cultivo bajo distintas condiciones de radiación solar y riego = Differential growth of selected maqui clones in Argentina, according to their cultivation under different conditions of solar radiation and irrigation
Roldan, Cecilia Soledad; El Mujtar, Veronica Andrea; Caballe, Gonzalo; Mazzoni, Ariel Omar; Berli, Federico Javier; Marchelli, Paula (Facultad de Ciencias Forestales y Recursos Naturales, Universidad Austral de Chile, 2023-05)El maqui (Aristotelia chilensis) ha cobrado gran importancia por ser uno de los berries con mayores niveles de capacidad antioxidante hasta ahora conocido y cuya demanda internacional se ha incrementado. Actualmente no ... -
Deciphering the transcriptomic regulation of heat stress responses in Nothofagus pumilio
Estravis Barcala, Maximiliano; Heer, Katrin; Marchelli, Paula; Ziegenhagen, Birgit; Arana, María Veronica; Bellora Pereyra, Nicolás (Plos One, 2021-03-30)Global warming is predicted to exert negative impacts on plant growth due to the damaging effect of high temperatures on plant physiology. Revealing the genetic architecture underlying the heat stress response is therefore ... -
Deciphering the transcriptomic regulation of heat stress responses in Nothofagus pumilio
Estravis-Barcala, Maximiliano; Herr, Katrin; Marchelli, Paula; Ziegenhagen, Birgit; Arana, María Veronica; Bellora Pereyra, Nicolás (Public Library of Science (PLOS), 2021-03)Global warming is predicted to exert negative impacts on plant growth due to the damaging effect of high temperatures on plant physiology. Revealing the genetic architecture underly ing the heat stress response is therefore ... -
Different drought‑adaptive capacity of a native Patagonian tree species (Nothofagus pumilio) resulting from local adaptation
Soliani, Carolina; Mattera, María Gabriela; Marchelli, Paula; Azpilicueta, Maria Marta; Dalla Salda, Guillermina (Springer, 2021-06)The resistance of different genotypes to abiotic stress may be due to genetic effects and/or to phenotypic plasticity allowing them to acclimate to variable conditions. The contribution of one or the other mechanism ... -
Differentiation in phenology among and within natural populations of a South American Nothofagus revealed by a two-year evaluation in a common garden trial
Duboscq Carra, Virginia Gisela; Arias Rios, Jorge Andrés; El Mujtar, Veronica Andrea; Marchelli, Paula; Pastorino, Mario Juan (Elsevier, 2020-03-15)Phenological traits are crucial for understanding adaptation to climate change due to their genetic control and association with abiotic factors. However, few data on phenology patterns are available for South American ... -
Distribución natural de Nothofagus alpina y Nothofagus obliqua (nothofagaceae) en Argentina, dos especies de primera importancia forestal de los bosques templados norpatagónicos
Sabatier, Yamila; Azpilicueta, Maria Marta; Marchelli, Paula; González Peñalba, Marcelo; Lozano, Liliana; García, Leandro; Martinez, Abel Hector Maria; Gallo, Leonardo Ariel; Umaña, Fernando; Bran, Donaldo Eduardo; Pastorino, Mario Juan (Sociedad Argentina de Botánica, 2011-06)Conocer la distribución natural de cualquier especie es esencial para poder planificar su conservación o uso. El Raulí [Nothofagus alpina (Poepp. & Endl.) Oerst. = Nothofagus nervosa (Phil.) Dim. et Mil.] y el Roble Pellín ... -
Do populations of Festuca pallescens from a rainfall gradient differ in the expression of morpho-physiological traits under drought stress?
Lopez, Aldana; Lopez, Dardo Ruben; Caballe, Gonzalo; Edwards, Priscila; Marchelli, Paula (Elsevier, 2023-06)In arid environments, stochastic rainfall and high evapotranspiration force plants to optimize water resources. North Patagonia is characterized by a deep rainfall gradient that gives rise to environments with very contrasting ... -
Ectomycorrhizal fungal communities in Nothofagus nervosa [Rauli] : a comparison between domesticated and naturally established specimens in a native forest of Patagonia, Argentina
Fernandez, Natalia Verónica; Marchelli, Paula; Gherghel, Felicia; Kost, Gerhard; Fontenla, Sonia Beatriz (2015-12)Due to its overexploitation during the past century, Nothofagus nervosa is currently included in conservation and domestication programs, in which ectomycorrhizas play an important role. We aimed to describe the abundance ... -
Ectomycorrhizas naturally established in Nothofagus nervosa seedlings under different cultivation practices in a forest nursery
Fernandez, Natalia Verónica; Marchelli, Paula; Fontenla, Sonia Beatriz (Springer, 2013-10)Mycorrhizas are mutualistic associations between soil fungi and plant roots which usually improve water and nutrient uptake, influencing plant fitness. Nothofagus nervosa (Raulí) is an ecologically and economically important ... -
Extensive pollen flow in a natural fragmented population of Patagonian cypress Austrocedrus chilensis
Colabella, Fernando; Gallo, Leonardo Ariel; Moreno, Angela Carolina; Marchelli, Paula (Springer, 2014-12)Habitat fragmentation might significantly affect mating and pollen dispersal patterns in plant populations, contributing to the decline of remnant populations. However, wind-pollinated species are able to disperse pollen ... -
Genetic diversity and population structure in Nothofagus pumilio, a foundation species of Patagonian forests: defining priority conservation areas and management
Mattera, María Gabriela; Pastorino, Mario Juan; Lantschner, Maria Victoria; Marchelli, Paula; Soliani, Carolina (Springer Nature, 2020-11)Patagonian forests are the southernmost temperate forests in the world, and Nothofagus pumilio is one of their most ecologically important tree species (i.e., a foundation species). It presents great adaptability and a ... -
Genetic variation in seedling water-use efficiency of Patagonian Cypress populations from contrasting precipitation regimes assessed through carbon isotope discrimination
Pastorino, Mario Juan; Aparicio, Alejandro Gabriel; Marchelli, Paula; Gallo, Leonardo Ariel (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), (España), 2012-07-20)Water-use efficiency (WUE) is a physiological parameter that plays a significant role in the evolutionary dynamics of many forest tree species. It can be estimated indirectly through carbon isotope discrimination (Δ). In ... -
Genetic variation of leaf pigment content in a southern beech
Arias Rios, Jorge Andrés; El Mujtar, Veronica Andrea; Pastorino, Mario Juan; Marchelli, Paula (Springer, 2022-07)Leaf pigment concentration varied among populations, watersheds and between two consecutive years. The highest concentration of pigments was found in 2018, but both years showed the same trend among populations. Physiological, ... -
Genomic responses to climate: Understanding local adaptation in the Andean tree species Nothofagus pumilio and implications for a changing world
Sekely, Jill; Marchelli, Paula; Arana, María Veronica; Dauphin, Benjamin; Mattera, Maria Gabriela; Pastorino, Mario Juan; Scotti, Ivan; Soliani, Carolina; Heer, Katrin; Opgenoorth, Lars (Wiley, 2024-03)Nothofagus pumilio is a foundation tree species that inhabits a 2000-km-long range in the southern Andes, a region with two perpendicular environmental gradients: temperature and photoperiod (North–South), and precipitation ... -
Germination response to water availability in populations of Festuca pallescens along a Patagonian rainfall gradient based on hydrotime model parameters
Lopez, Aldana Soledad; Lopez, Dardo Ruben; Arana, María Veronica; Battla, Diego; Marchelli, Paula (Springer Nature, 2021-05)Sensitivity to water availability is a key physiological trait for grassland species located in arid and semiarid environments, where successful germination is closely related to rainfall dynamics. Festuca pallescens ... -
Halfway encounters: Meeting points of colonization routes among the southern beeches Nothofagus pumilio and N. antarctica
Soliani, Carolina; Tsuda, Yoshiaki; Bagnoli, Francesca; Gallo, Leonardo Ariel; Vendramin, Giovanni Giuseppe; Marchelli, Paula (2015-04)The Patagonian region is characterized by a complex biogeographic history, with evidence of deep phylogeographic breaks shared among species. Of particular interest to conservation is the nature of colonization and settlement ... -
High genetic variation in marginal fragmented populations at extreme climatic conditions of the Patagonian Cypress Austrocedrus chilensis
Arana, María Veronica; Gallo, Leonardo Ariel; Vendramin, Giovanni Giuseppe; Pastorino, Mario Juan; Sebastiani, Federico; Marchelli, Paula (Elsevier, 2010-03)Knowledge about current patterns of genetic structure of populations together with the evolutionary history of a species helps to understand and predict the adaptation of populations to future climate change. We assayed ...