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Circadian oscillation of gibberellin signaling in Arabidopsis
Arana, María Veronica; Marín de la Rosa, Nora; Maloof, Julin N.; Blazquez, Miguel Angel; Alabadí, David (National Academy of Sciences, 2011-05)Circadian clocks are endogenous timekeeping mechanisms that allow organisms to anticipate rhythmic, daily environmental changes. Temporal coordination of transcription results in a set of gene expression patterns with ... -
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 ... -
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 ... -
Differential UVR8 Signal across the Stem Controls UV-B–Induced Inflorescence Phototropism
Vanhaelewyn, Lucas; Viczián, András; Prinsen, Els; Bernula, Péter; Serrano, Alejandro Miguel; Arana, María Veronica; Ballaré, Carlos Luis; Nagy, Ferenc; Van Der Straeten, Dominique; Vandenbussche, Filip (The American Society of Plant Biologists, 2019-09)In the course of evolution, plants have developed mechanisms that orient their organs toward the incoming light. At the seedling stage, positive phototropism is mainly regulated by phototropin photoreceptors in blue and ... -
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 ... -
Following the star: Inflorescence heliotropism
Serrano, Alejandro M.; Arana, María Veronica; Vanhaelewyn, Lucas; Ballare, Carlos Luis; Van Der Straeten, Dominique; Vandenbussche, Filip (Elsevier, 2018-03)Plant movements in response to directional solar radiation, known as “heliotropism” are frequently observed in nature. Although there is a considerable amount of literature on these movements in vegetative organs, knowledge ... -
Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis
Arana, María Veronica; Sanchez Lamas, Maximiliano; Strasser, B.; Ibarra, Silvia E.; Cerdan, Pablo Diego; Botto, Juan Francisco; Sanchez, Rodolfo Augusto (Wiley, 2014-03)In several species, seed germination is regulated by light in a way that restricts seedling emergence to the environmental conditions that are likely to be favourable for the success of the new individual, and therefore, ... -
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 ... -
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 circadian and gibberellin signaling in Arabidopsis : Possible links between the circadian clock and the AtGID1 transcription
Marín de la Rosa, Nora; Alabadí, David; Blázquez, Miguel Ángel; Arana, María Veronica (Taylor & Francis, 2011-09)The circadian clock acts as central coordinator of plant activity, and it regulates key traits for plant fitness such as flowering time, gas exchange, growth and stress responses. In the May issue of the Proceedings of the ... -
Melatonin in Arabidopsis thaliana acts as plant growth regulator at low concentrations and preserves seed viability at high concentrations
Gatica Hernandez, Ismaél Jairo Gabriel; Gomez, Federico José Vicente; Cerutti, Estela Soledad; Arana, María Verónica; Silva, María Fernanda (2015-09)Since the discovery of melatonin in plants, several roles have been described for different species, organs, and developmental stages. Arabidopsis thaliana, being a model plant species, is adequate to contribute to the ... -
Molecular bases of responses to abiotic stress in trees
Estravis Barcala, Maximiliano; Mattera, María Gabriela; Soliani, Carolina; Bellora, Nicolas; Opgenoorth, Lars; Heer, Katrin; Arana, María Veronica (Oxford University Press, 2020-06)Trees are constantly exposed to climate fluctuations, which vary with both time and geographic location. Environmental changes that are outside of the physiological favorable range usually negatively affect plant performance ... -
Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
Arana, María Veronica; Tognacca, Rocío Soledad; Estravis Barcala, Maximiliano; Sanchez, Rodolfo Augusto; Botto, Javier Francisco (Wiley, 2017-09-23)The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, ... -
Questions, Perspectives and Final Considerations of Planting Native Species Under the Climate Change Conditioning
Pastorino, Mario Juan; Marchelli, Paula; Arana, María Veronica; Aparicio, Alejandro Gabriel (Springer, 2021)There is a growing interest in Argentina (and in the world) for planting native tree species. This has triggered the development of domestication programs for those species with greater productive potential or a key ... -
Raulí (Nothofagus alpina = N. nervosa): The Best Quality Hardwood in Patagonia
Marchelli, Paula; Pastorino, Mario Juan; Azpilicueta, Maria Marta; Duboscq Carra, Virginia Gisela; Sola, Georgina Giselle; El Mujtar, Veronica Andrea; Arana, María Veronica; Arias Rios, Jorge Andrés; Fernandez, Natalia; Fontenla, Sonia Beatriz; González Peñalba, Marcelo; Gallo, Leonardo Ariel (Springer, 2021)Nothofagus alpina (Poepp. and Endl.) Oerst. (= N. nervosa (Phil.) Dim. et Mil.), raulí, is an iconic forest tree species of the South American temperate forests due to its hardwood quality. With a pinkish colour and light ... -
Respuestas a la temperatura en especies del género Nothofagus distribuidas en un gradiente altitudinal
Estravis Barcala, Maximiliano (Edición del Autor, 2019-03-07)Las predicciones del Cambio Clim´atico Global para el noroeste de la Patagonia indican un aumento de la temperatura media, acompañado de mayor frecuencia de eventos extremos. En este contexto, es fundamental comprender la ... -
Seed dormancy responses to temperature relate to Nothofagus species distribution and determine temporal patterns of germination across altitudes in Patagonia
Arana, María Verónica; Gonzalez Polo, Marina; Martinez Meier, Alejandro; Gallo, Leonardo Ariel; Benech-Arnold, Roberto Luis; Sanchez, Rodolfo Augusto; Batlla, Diego (2015-08-26)Seeds integrate environmental cues that modulate their dormancy and germination. Although many mechanisms have been identified in laboratory experiments, their contribution to germination dynamics in existing communities ... -
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 ... -
The impact of different natural environments on the regeneration dynamics of two Nothofagus species across elevation in the southern Andes
Cagnacci, Julieta María; Estravis Barcala, Maximiliano; Lia, Veronica Viviana; Martinez Meier, Alejandro; Gonzalez Polo, Marina; Arana, María Veronica (Elsevier, 2020-05-15)A widely accepted paradigm in forest ecology proposes that patterns of relative abundance among mature forest trees are largely influenced by biotic and abiotic processes that operate most intensely during the earliest ...