• Depletion of the heaviest stable N isotope is associated with NH4+/NH3 toxicity in NH4+-fed plants 

      Ariz, Idoia Upna; Cruz, Cristina; Morán Juez, José Fernando Upna; González Moro, María B.; García Olaverri, Carmen Upna; González Murua, Carmen; Martins Loucao, María A.; Aparicio Tejo, Pedro María Upna (BioMed Central, 2011)   Artículo / Artikulua  OpenAccess
      Background: In plants, nitrate (NO3-) nutrition gives rise to a natural N isotopic signature (δ15N), which correlates with the δ15N of the N source. However, little is known about the relationship between the δ15N of the ...
    • Leaf δ15N as a physiological indicator of the responsiveness of N2-fixing alfalfa plants to elevated CO2, temperature and low water availability 

      Ariz, Idoia Upna; Cruz, Cristina; Neves, Tomé; Irigoyen, J. Juan; García Olaverri, Carmen Upna; Nogués, Salvador; Aparicio Tejo, Pedro María Upna; Aranjuelo Michelena, Iker (Frontiers Media, 2015)   Artículo / Artikulua  OpenAccess
      The natural 15N/14N isotope composition (δ15N) of a tissue is a consequence of its N source and N physiological mechanisms in response to the environment. It could potentially be used as a tracer of N metabolism in plants ...
    • Mechanisms of ammonium toxicity and the quest for tolerance 

      Esteban Terradillos, Raquel; Ariz, Idoia Upna; Cruz, Cristina; Morán Juez, José Fernando Upna (Elsevier, 2016)   Artículo / Artikulua  OpenAccess
      Ammonium sensitivity of plants is a worldwide problem, constraining crop production. Prolonged application of ammonium as the sole nitrogen source may result in physiological and morphological disorders that lead to decreased ...