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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 ... -
Coirón blanco: primeros pasos en la domesticación de una especie clave de los pastizales patagónicos
Lopez, Aldana Soledad; Siffredi, Guillermo Lorenzo; Azpilicueta, Maria Marta; Arana, María Veronica; Caballe, Gonzalo; Lopez, Dardo Ruben; Marchelli, Paula (Ediciones INTA, 2018-12)Los pastizales naturales son el principal componente forrajero en Patagonia Norte. La ganadería extensiva con suplementación en períodos críticos, la baja cobertura vegetal del suelo y el efecto del viento aumentan el ... -
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 ... -
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 ... -
Environmental gradients as “natural labs” for elucidating the regeneration dynamics of three Nothofagus species under different climatic scenarios in Patagonia
Cagnacci, María Julieta; Estravis Barcala, Maximiliano; Gonzalez-Polo, Marina; Marchelli, Paula; Pastorino, Mario Juan; Martinez Meier, Alejandro; Batlla, Diego; Arana, María Veronica (2018-09)We work in Patagonian forests, the southernmost woody ecosystems of the world, in which three tree species have a clear altitudinal distribution. Nothofagus obliqua is frequent at 650-850 m above the sea level, N. nervosa ... -
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 ... -
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 ... -
Integrating genetics and suitability modelling to bolster climate change adaptation planning in Patagonian nothofagus forests
Marchelli, Paula; Thomas, Evert; Azpilicueta, Maria Marta; Zonneveld, Maarten van; Gallo, Leonardo Ariel (2017)We investigated the impact of past changes in habitat suitability on the current patterns of genetic diversity of two southern beeches (Nothofagus nervosa and Nothofagus obliqua) in their eastern fragmented range in ... -
Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow
Lopez, Aldana Soledad; Lopez, Dardo Ruben; Caballe, Gonzalo; Siffredi, Guillermo Lorenzo; Marchelli, Paula (Elsevier, 2020-03)Increasing global aridity combined with changing environmental conditions might cause irreparable alterations in arid and semiarid ecosystems. Knowledge of within-species genetic diversity and adaptive responses, especially ... -
Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio
Soliani, Carolina; Gallo, Leonardo Ariel; Marchelli, Paula; Vendramin, Giovanni Giuseppe (2016)Un amplio conocimiento de las consecuencias ecológicas y genéticas de la aplicación de las prácticas de gestión en los ecosistemas naturales es de fundamental importancia para las acciones de conservación. El principal ... -
Neutral and adaptive variation in the most widely distributed native tree species in Patagonia: on the way to defining provenance regions for Nothofagus pumilio
Mattera, María Gabriela; Torres, Ana Delia; Soliani, Carolina; Aparicio, Alejandro Gabriel; Marchelli, Paula; Pastorino, Mario Juan (2018-09)In our ongoing project, we aim to define Provenance Regions (PR) for the species along its distribution range in Argentina, from 36º S to 55º S. We propose the combination of neutral genetic variation with quantitative ... -
Phylogenetic relationships and intraspecific diversity of a North Patagonian Fescue: evidence of differentiation and interspecific introgression at peripheral populations
Lopez, Aldana; Azpilicueta, Maria Marta; Lopez, Dardo Ruben; Siffredi, Guillermo Lorenzo; Marchelli, Paula (2018-03)Peripheral sites usually offer suboptimal conditions for species with wide distributions, where expression of phenotypic variability and potential interspecific hybridization might be enhanced. The Patagonian steppe, the ... -
Robles in Lagunas de Epulauquen, Argentina: previous and recent evidence of their distinctive character
Azpilicueta, Maria Marta; Pastorino, Mario Juan; Puntieri, Javier Guido; Barbero, Fernando Alvaro; Martinez Meier, Alejandro; Marchelli, Paula; Gallo, Leonardo Ariel (2014-12)The northernmost ‘robles’ of Argentina, located in Lagunas de Epulauquen (northwest Patagonia), are considered a population of Nothofagus obliqua, even though they differ in some respects from individuals of other populations ... -
Seed responses to temperature indicate different germination strategies among Festuca pallescens populations from semi-arid environments in North Patagonia
Lopez, Aldana; Marchelli, Paula; Batlla, Diego; Lopez, Dardo Ruben; Arana, María Veronica (Elsevier, 2019-04)Seed germination is one of the earliest phenotypes expressed by plants, and the accuracy to germinate in the correct time and place is essential for plant population fitness. Cues that regulate germination have been ... -
Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species
Sola, Georgina Giselle; El Mujtar, Veronica Andrea; Gallo, Leonardo Ariel; Vendramin, Giovanni Giuseppe; Marchelli, Paula (Oxford University Press, 2020-05)Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect ...