Listar por autor UPNA "Arrese-Igor Sánchez, César"
Mostrando ítems 1-20 de 24
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Additive effects of heatwave and water stresses on soybean seed yield is caused by impaired carbon assimilation at pod formation but not at flowering
Heatwave (HW) combined with water stress (WS) are critical environmental factors negatively affecting crop development. This study aimed to quantify the individual and combined effects of HW and WS during early reproductive ... -
Application of anti-transpirants temporarily alleviates the inhibition of symbiotic nitrogen fixation in drought-stressed pea plants
Stomatal closure is one of the first plant responses under a water deficit situation. This leads to a decline in transpiration but also in the plant photosynthetic activity. Legume plants grown under symbiosis with rhizobium ... -
Carbon/nitrogen relations in C3 cereal crops within a climate change context: implications on grain yield and quality
El objetivo principal de este trabajo es el uso de la aplicación de nuevos criterios de selección de trigo para identificar, de manera integradora, genotipos y prácticas de manejo de cultivos que confieran alta eficiencia ... -
Disponibilidad hídrica y fijación de nitrógeno en leguminosas: fisiología, metabolismo y proteómica
Las entradas de nitrógeno al suelo por medio de la fijación biológica llevada a cabo por plantas de la familia de las leguminosas en simbiosis con bacterias del suelo (rizobios), disminuyen la necesidad de aporte externo ... -
Drought stress provokes the down-regulation of methionine and ethylene biosynthesis pathways in Medicago truncatula roots and nodules
Symbiotic nitrogen fixation is one of the first physiological processes inhibited in legume plants under water-deficit conditions. Despite the progress made in the last decades, the molecular mechanisms behind this ... -
Increased ascorbate biosynthesis does not improve nitrogen fixation nor alleviate the effect of drought stress in nodulated Medicago truncatula plants
Legume plants are able to establish nitrogen-fixing symbiotic relations with Rhizobium bacteria. This symbiosis is, however, affected by a number of abiotic constraints, particularly drought. One of the consequences of ... -
Insights into the regulation of nitrogen fixation in pea nodules: lessons from drought, abscisic acid and increased photoassimilate availability
Nitrogen fixation in legume nodules has been shown to be very sensitive to drought and other environmental constraints. It has been widely assumed that this decline in nitrogen fixation was a consequence of an increase in ... -
Integrative approaches for the analysis of abiotic stress responses in the legume-Rhizobium symbiosis: from shoots to roots
La actual población mundial junto con las predicciones de un mayor crecimiento sugieren que es necesario incrementar el rendimiento de los cultivos a nivel mundial. Las leguminosas son el segundo cultivo más importante ... -
An integrative, multidisciplinary approach to the study of the impact of climate change on legume agro-physiology and metabolism
Las leguminosas son la segunda familia, tras los cereales, en importancia agrícola, cubriendo el 14% de la superficie cultivada. En el contexto actual y en un futuro cercano, la producción de leguminosas se ve amenazada ... -
Is N-feedback involved in the inhibition of nitrogen fixation in drought-stressed Medicago truncatula?
Drought stress is a major factor limiting nitrogen fixation (NF) in crop production. However, the regulatory mechanism involved and the origin of the inhibition, whether local or systemic, is still controversial and so far ... -
Local inhibition of nitrogen fixation and nodule metabolism in drought-stressed soybean
Drought stress is a major factor limiting symbiotic nitrogen fixation (NF) in soybean crop production. However, the regulatory mechanisms involved in this inhibition are still controversial. Soybean plants were symbiotically ... -
Long-term mannitol-induced osmotic stress leads to stomatal closure, carbohydrate accumulation and changes in leaf elasticity in Phaselous vulgaris leaves
The effect of long-term osmotic stress was investigated in leaves of two common bean lines, with contrasting tolerance: Flamingo (tolerant) and coco blanc (sensitive). Water relations, organic solute, ion accumulation ... -
Metabolismo del azufre en la simbiosis guisante - rhizobium
Las leguminosas constituyen un cultivo importante para la agricultura sostenible, debido en parte a su capacidad para fijar el N atmosférico en simbiosis con bacterias del suelo mediante la fijación biológica de nitrógeno ... -
Nodule carbohydrate catabolism is enhanced in the Medicago truncatula A17-Sinorhizobium medicae WSM419 symbiosis
The symbiotic association between Medicago truncatula and Sinorhizobium meliloti is a well-established model system in the legume–Rhizobium community. Despite its wide use, the symbiotic efficiency of this model has been ... -
Nodule performance within a changing environmental context
Global climate models predict that future environmental conditions will see alterations in temperature, water availability and CO2 concentration ([CO2]) in the atmosphere. Climate change will reinforce the need to develop ... -
A novel biosensor to monitor proline in pea root exudates and nodules under osmotic stress and recovery
Background and aims: Plant and bacteria are able to synthesise proline, which acts as a compound to counteract the negative effects of osmotic stresses. Most methodologies rely on the extraction of compounds using destructive ... -
Pea plant responsiveness under elevated [CO2] is conditioned by the N source (N2 fixation versus NO3 fertilization)
The main goal of this study was to test the effect of [CO2] on C and N management in 2different plant organs (shoots, roots and nodules) and its implication in the 3responsiveness of exclusively ... -
Physiological responses of legume nodules to drought
Legumes include important agricultural crops, as their high protein content is of primary importance for human food and animal feed. In addition, the ability of most of them to establish symbiotic relationships with soil ... -
Physiological, hormonal and metabolic responses of two alfalfa cultivars with contrasting responses to drought
Alfalfa (Medicago sativa L.) is frequently constrained by environmental conditions such as drought. Within this context, it is crucial to identify the physiological and metabolic traits conferring a better performance under ... -
A proteomic approach reveals new actors of nodule response to drought in split-root grown pea plants
Drought is considered the more harmful abiotic stress resulting in crops yield loss. Legumes in symbiosis with rhizobia are able to fix atmospheric nitrogen. Biological nitrogen fixation (SNF) is a very sensitive process ...