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

Ariz, Idoia; Cruz, Cristina; Morán Juez, José Fernando; González Moro, María B.; García Olaverri, Carmen; González Murua, Carmen; Martins Loucao, María A.; Aparicio Tejo, Pedro María (BioMed Central, 2011) Artículo / Artikulua,

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 ...