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Cultivo de Azotobacter vinelandii en medios limitados en hierro y molibdeno

Authors: Moreno; del Moral, A.; Ramos Cormenzana, Alberto;

Cultivo de Azotobacter vinelandii en medios limitados en hierro y molibdeno

Abstract

Se cultivó Azotobacter vinelandii ATCC 12837 en medios limitados en hierro y molibdeno. Bajo estas condiciones de cultivo, se observó una inhibición del crecimiento como consecuencia de la limitación mineral. Los análisis químicos realizados mostraron que en medios limitados en'hierro las células contenían mayores cantidades de ácido poli-β-hidroxibutírico que en medios control. Asimismo, en condiciones de limitación mineral, Azotobacter mostró un incremento en la formación de quistes, con respecto a medios control. Estas observaciones fueron confirmadas por estudios de fotorreactivación.

Azotobacter vinelandii ATCC 12837 was cultured in iron-limited and molybdenum-limited media. Under these culture conditions a growth inhibition was observed as a consequence of mineral-limitation. Chemical analyses showed that cells grown in iron-limited medium contained more large amounts of PHB than control cells. Also, when Azotobacter grown under mineral-limited conditions showed an increase on cyst formation compared with mineral-suffIcient cultures. These observations were confirmed through photorreactivation studies.

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selected citations
These citations are derived from selected sources.
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.
BIP!Impulse provided by BIP!
0
Average
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