Now showing items 1-12 of 12

    • Drought stress causes a reduction in the biosynthesis of ascorbic acid in soybean plants 

      Seminario Huárriz, Amaia Upna; Song, Li; Zulet González, Amaia Upna; Nguyen, Henry T.; González García, Esther Upna; Larrainzar Rodríguez, Estíbaliz Upna (Frontiers Media, 2017)   Artículo / Artikulua  OpenAccess
      Drought provokes a number of physiological changes in plants including oxidative damage. Ascorbic acid (AsA), also known as vitamin C, is one of the most abundant water-soluble antioxidant compound present in plant tissues. ...
    • Drought stress provokes the down-regulation of methionine and ethylene biosynthesis pathways in Medicago truncatula roots and nodules 

      Larrainzar Rodríguez, Estíbaliz Upna; Molenaar, Johanna A.; Wienkoop, Stefanie; Gil Quintana, Erena Upna; Alibert, Bénédicte; Limami, Anis M.; Arrese-Igor Sánchez, César Upna; González García, Esther Upna (Wiley, 2014)   Artículo / Artikulua  OpenAccess
      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 ...
    • Drought stress responses in Medicago truncatula and Glycine max: system biology approaches 

      Seminario Huárriz, Amaia Upna (2017)   Tesis doctoral / Doktoretza tesia  OpenAccess
      After cereals, legumes are crops of great economic importance. However, legume plants are very sensitive to abiotic stresses, being drought one of the most harmful stress in terms of crop production. The general aim of ...
    • Functional analysis of the taproot and fibrous roots of Medicago truncatula: sucrose and proline catabolism primary response to water deficit 

      Castañeda Presa, Verónica Upna; Peña, Marlon de la; Azcarate, Lidia; Aranjuelo Michelena, Iker; González García, Esther Upna (Elsevier, 2019)   Artículo / Artikulua
      Root performance represents a target factor conditioning plant development under drought conditions. Moreover, recent root phenotyping studies remark relevant differences on functionality of the different root types. ...
    • Insights into the regulation of nitrogen fixation in pea nodules: lessons from drought, abscisic acid and increased photoassimilate availability 

      González García, Esther Upna; Gálvez, Loli; Royuela Hernando, Mercedes Upna; Aparicio Tejo, Pedro María Upna; Arrese-Igor Sánchez, César Upna (EDP Sciences, 2001)   Artículo / Artikulua  OpenAccess
      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 ...
    • Is N-feedback involved in the inhibition of nitrogen fixation in drought-stressed Medicago truncatula? 

      Gil Quintana, Erena Upna; Larrainzar Rodríguez, Estíbaliz Upna; Arrese-Igor Sánchez, César Upna; González García, Esther Upna (Oxford University PressSociety for Experimental Biology, 2013)   Artículo / Artikulua  OpenAccess
      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 ...
    • Legume nitrogen utilization under drought stress 

      Castañeda Presa, Verónica Upna; Gil Quintana, Erena Upna; Echeverría Obanos, Andrés Upna; González García, Esther Upna (Springer, 2018)   Capítulos de libro / Liburuen kapituluak  OpenAccess
      Legumes account for around 27% of the world’s primary crop production and can be classified based on their use and traits into grain and forage legumes. Legumes can establish symbiosis with N-fixing soil bacteria. As a ...
    • Local inhibition of nitrogen fixation and nodule metabolism in drought-stressed soybean 

      Gil Quintana, Erena Upna; Larrainzar Rodríguez, Estíbaliz Upna; Seminario Huárriz, Amaia Upna; Díaz Leal, Juan Luis; Alamillo, Josefa M.; Pineda, Manuel; Arrese-Igor Sánchez, César Upna; Wienkoop, Stefanie; González García, Esther Upna (Oxford University PressSociety for Experimental Biology, 2013)   Artículo / Artikulua  OpenAccess
      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 

      Sassi, Sameh; Aydi, Samir; Hessini, Kamel; González García, Esther Upna; Arrese-Igor Sánchez, César Upna; Abdelly, Chedly (Academic Journals, 2010)   Artículo / Artikulua  OpenAccess
      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 ...
    • Nodule carbohydrate catabolism is enhanced in the Medicago truncatula A17-Sinorhizobium medicae WSM419 symbiosis 

      Larrainzar Rodríguez, Estíbaliz Upna; Gil Quintana, Erena Upna; Seminario Huárriz, Amaia Upna; Arrese-Igor Sánchez, César Upna; González García, Esther Upna (Frontiers Media, 2014)   Artículo / Artikulua  OpenAccess
      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 ...
    • Physiological and biochemical characterization of rootlets response to salt stress in two Medicago truncatula Gaertn. ecotypes 

      Amouri, Adel Amar; González García, Esther Upna; Aoul, Seghir Hadjadj (Japanese Society for Root Research, 2018)   Artículo / Artikulua  OpenAccess
      Legumes are very important plants both ecologically and agriculturally because they are able to interact symbiotically with rhizobia for biological nitrogen fixation and soil fertilization. Medicago truncatula Gaertn. is ...
    • Physiological responses of legume nodules to drought 

      Arrese-Igor Sánchez, César Upna; González García, Esther Upna; Marino Bilbao, Daniel Upna; Ladrera Fernández, Rubén Upna; Larrainzar Rodríguez, Estíbaliz Upna; Gil Quintana, Erena Upna (Global Science Books, 2011)   Artículo / Artikulua  OpenAccess
      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 ...