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Mostrando ítems 21-33 de 33
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Negative short-term salt effects on the soybean–Bradyrhizobium japonicum interaction and partial reversion by calcium addition
Muñoz, Nacira Belen; Rodriguez, Marianela; Robert, German; Lascano, Hernan Ramiro (CSIRO Publishing, 2013-09-05)The short-term (2 h) effects of salt stress (50 and 150 mM NaCl) on early events of soybean– Bradyrhizobium japonicum (rhizobia) interaction were analysed, determining the following parameters in root hair with or without ... -
Physiological characterization of four model Lotus diploid genotypes: L. japonicus (MG20 and Gifu), L. filicaulis, and L. burttii under salt stress
Melchiorre, Mariana; Quero, Gastón E.; Parola, Rodrigo; Racca, Roberto Walter; Trippi, Victorio; Lascano, Hernan Ramiro (Elsevier, 2009-09-25)The genus Lotus comprises a heterogeneous group of annual and perennial species. Lotus japonicus (with MG20 and Gifu ecotypes) has been adopted as one of the model legumes in genetic and genomic studies. Other Lotus species, ... -
Provenance matters: variability under saline stress in young plants of four populations of a Prosopis (mesquite) species from dry forests of Argentina
Vennier, María Paula; Funes, G.; Teich, Ingrid; Lopez Lauenstein, Diego; Lascano, Hernan Ramiro (Canadian Science Publishing, 2021-01-04)The planting of native perennial woody species tolerant to variable salt concentrations can facilitate the recovery of degraded dry forests. The objective of this study was to evaluate and compare, under experimentally ... -
Redox systemic signaling and induced tolerance responses during soybean–bradyrhizobium japonicum interaction: involvement of nod factor receptor and autoregulation of nodulation
Fernandez Göbel, Tadeo Francisco; Deanna, Rocío; Muñoz, Nacira Belen; Robert, German; Asurmendi, Sebastian; Lascano, Hernan Ramiro (Frontiers Media, 2019-02)The symbiotic relationship between legumes and nitrogen-fixing rhizobia induces local and systemic responses, which ultimately lead to nodule formation. The autoregulation of nodulation (AON) is a systemic mechanism related ... -
Redox-related metabolites and gene expression modulated by sugar in sunflower leaves: similarities with Sunflower chlorotic mottle virus-induced symptom
Rodriguez, Marianela; Muñoz, Nacira Belen; Lenardon, Sergio Luis; Lascano, Hernan Ramiro (Taylor & Francis, 2013)Sugars are part of an integrated redox system, since they are key regulators of respiration and photosynthesis, and therefore of the levels of reducing power, ATP and ROS. These elements are major determinants of the ... -
Reductions in Maize Root-tip Elongation by Salt and Osmotic Stress do not Correlate with Apoplastic O2•− Levels
Bustos, Dolores Angela; Lascano, Hernan Ramiro; Villasuso, Ana Laura; Machado, Estela; Senn, Eugenia; Cordoba, Alicia Beatriz; Taleisnik, Edith (Oxford Academic Press, 2008-10)Background and Aims: Experimental evidence in the literature suggests that O2•− produced in the elongation zone of roots and leaves by plasma membrane NADPH oxidase activity is required for growth. This study explores ... -
Saline and osmotic stress differentially affects apoplastic and intracellular reactive oxygen species production, curling and death of root hair during Glycine max L.–Bradyrhizobium japonicum interaction
Muñoz, Nacira Belen; Robert, German; Melchiorre, Mariana; Racca, Roberto Walter; Lascano, Hernan Ramiro (Elsevier, 2011-12-08)In the present study, the production of apoplastic and intracellular reactive oxygen species (ROS) and deformations of young soybean root hairs inoculated with Bradyrhizobium japonicum strain USDA138 were analyzed under ... -
Sistemas de fenotipado para la evaluación de las respuestas al estrés salino en Lotus
Quero, Gastón Eduardo; Borsani, Omar; Gutiérrez, Lucía; Melchiorre, Mariana; Monza, Jorge; Lascano, Hernan Ramiro (Facultad de Agronomía, Universidad de la República e Instituto Nacional de Investigación Agropecuaria, Uruguay, 2013-06-01)La tolerancia al estrés salino es un carácter complejo determinado por la sumatoria de los efectos de numerosos genes, cuya identificación es necesaria para la definición de estrategias de mejoramiento. En este sentido, ... -
Soybean seed growth dynamics exposed to heat and water stress during the filling period under field conditions
Veas, Rodolfo Ezequiel; Ergo, Verónica Vanesa; Vega, Claudia Rosa Cecilia; Lascano, Hernan Ramiro; Rondanini, Deborah Paola; Carrera, Constanza Soledad (Wiley, 2021-05-27)Soybean production can be affected by heat (HS) and water stress (WS). However, studies on effects of stresses combination under field conditions are still scarce. The objective of this study was to evaluate the impact of ... -
Structure and biological activities of lipochitooligosaccharide nodulation signals produced by Bradyrhizobium japonicum USDA 138 under saline and osmotic stress
Muñoz, Nacira Belen; Soria Díaz, Maria Eugenia; Manyani, Hamid; Contreras Sánchez Matamoros, Rocío; Gil Serrano, Antonio; Megías, Manuel; Lascano, Hernan Ramiro (2014-02)The establishment of a symbiotic interaction involves a signal exchange between the host legume (flavonoids) and the nitrogen-fixing rhizobia (nodulation factors (NFs)). Likewise, abiotic stress conditions, such as salinity ... -
Superoxide dismutase and glutathione reductase overexpression in wheat protoplast: photooxidative stress tolerance and changes in cellular redox state
Melchiorre, Mariana; Robert, German; Trippi, Victorio; Racca, Roberto Walter; Lascano, Hernan Ramiro (Springer, 2008-08-26)In previous works, we have established a correlation between antioxidant system response and tolerance to drought, osmotic stress and photooxidative stress of different wheat cultivars with contrasting drought tolerance. ... -
The Activity of the Chloroplastic Ndh Complex Is Regulated by Phosphorylation of the NDH-F Subunit
Lascano, Hernan Ramiro; Casano, Leonardo M.; Martı́n, Mercedes; Sabater, Bartolomé (American Society of Plant Biologists, 2003-05-01)Hydrogen peroxide (H2O2) induces increases, to different degrees, in transcripts, protein levels, and activity of the Ndh complex (EC 1.6.5.3). In the present work, we have compared the effects of relatively excess light, ... -
The chlorotic symptom induced by Sunflower chlorotic mottle virus is associated with changes in redox-related gene expression and metabolites
Rodriguez, Marianela; Muñoz, Nacira Belen; Lenardon, Sergio Luis; Lascano, Hernan Ramiro (Elsevier, 2012-08-18)Systemic infections are commonly associated with changes in host metabolism and gene expression. Sunflower chlorotic mottle virus (SuCMoV) causes systemic infection with sugar increase, photoinhibition and increase in ...