Suscripción a Biblioteca: Guest
International Journal on Algae

Publicado 4 números por año

ISSN Imprimir: 1521-9429

ISSN En Línea: 1940-4328

SJR: 0.168 SNIP: 0.377 CiteScore™:: 0.6 H-Index: 11

Indexed in

Transformation of urea during the growth of some blue-green (Cyanoprocaryota) and green (Chlorophyta, Chlorococcales) algae

Volumen 3, Edición 4, 2001, pp. 89-100
DOI: 10.1615/InterJAlgae.v3.i4.80
Get accessGet access

SINOPSIS

The accumulation of ammonium nitrogen in the culture medium of green and blue-green algae of the genera The accumulation of ammonium nitrogen in the culture medium of green and blue-green algae of the genera Acutodesmus (Hedew.) Tsar. (1 species), Chlorella Beijer, (1), Coelastrum Nag. (1), and Desmodesmus (Chod.) An, Friedl et Hegew. (5) was studied in the process of their growth on urea. It has been revealed that a sharp increase in the NH4+ concentration in the culture of blue-green algae due to the high activity of urease leads to their inhibition, and eventually to their death. Chlorococcal algae containing urea amidase differed in a low intensity of urea hydrolysis and in the absence of the inhibitory effect of NH4+ ions on their growth. In addition, it has been shown that the character of urea decomposition depends on the biological peculiarities of the species, which is the most distinct in representatives of the order Chlorococcales. The presence of accompanying (associated) bacteria in their culture leads to a decrease in the ammonium nitrogen quantity in the medium.

Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones Precios y Políticas de Suscripcione Begell House Contáctenos Language English 中文 Русский Português German French Spain