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Metabolismo del nitrato en cepas hidrogenasa positivas (HUP+) e hidrogenasa negativas (HUP-) de Bradyrhizobium Japonicum :utilización de nitrato y actividad nitrato reductasa en (Brady) Rhizobium

Authors: Delgado Igeño, María Jesús;

Metabolismo del nitrato en cepas hidrogenasa positivas (HUP+) e hidrogenasa negativas (HUP-) de Bradyrhizobium Japonicum :utilización de nitrato y actividad nitrato reductasa en (Brady) Rhizobium

Abstract

En esta memoria de doctorado se han abordado los siguientes aspectos: en primer lugar, se ha estudiado la relación existente entre actividad nitrato reductasa e hidrogenasa en b.japonicum, encontrándose la existencia de una relacion inversa entre ambas actividades enzimáticas en células en vida libre y en simbiosis. en segundo lugar, se ha profundizado en los conocimientos actuales sobre el metabolismo del nitrato en nodulos formados por (brady)rhizobium. los resultados obtenidos han permitido concluir que el tratamiento de plantas de soja y guisante con dosis moderadas de nitrato no implica la utilización de este elemento por los bacteroides y que el nitrito no se acumula normalmente en el citosol de los nódulos. por ultimo, se han iniciado los estudios de caracterización de la enzima nitrato reductasa en b.japonicum tanto en vida libre como en simbiosis, encontrándose que la actividad nr de las vesículas de membrana de bacterias y bacteroides corresponde a dos enzimas cuyos pesos moleculares son 240 y 80 kd, respectivamente, y la existencia de dos isoenzimas con actividad nr en las vesículas de membrana de las bacterias

Tesis Universidad de Granada. Facultad de Ciencias

Related Organizations
Keywords

Metabolismo, 579, Microbiología, 24

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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