Actual and potential nitrogen fixation of Albizia Rhizobium symbioses as affected by nitrate

Actual nitrogen fixation of root nodules of different Albizia-Rhizobium symbioses was compared with the potential nitrogen fixation of isolated bacteroids. The potential nitrogen fixation exceeded actual nitrogen fixation in all symbionts. After addition of nitrate the actual nitrogen fixation decre...

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Bibliographic Details
Published in:Folia microbiologica 1997-01, Vol.42 (4), p.361-366
Main Authors: Sarkar Ghosh, K, Pal, S.C, Sen, S.K. (School of Life Sciences, Santiniketan (India). Microbiology Laboratory)
Format: Article
Language:English
Subjects:
ACTIVIDAD ENZIMATICA
ACTIVITE ENZYMATIQUE
Agronomy. Soil science and plant productions
ALBIZIA
Biological and medical sciences
CARBOHIDRATOS
CONTENIDO DE MATERIA SECA
CONTENIDO DE NITROGENO
DOSE D'APPLICATION
DOSIS DE APLICACION
Economic plant physiology
EXPERIMENTACION EN CONTENEDOR
EXPERIMENTATION EN POT
FIJACION DEL NITROGENO
FIXATION DE L'AZOTE
Fundamental and applied biological sciences. Psychology
GLUCIDE
NITRATE DE POTASSIUM
NITRATO DE POTASIO
NITROGENASA
NITROGENASE
NODOSITE RACINAIRE
NUDOSIDADES RADICULARES
RHIZOBIUM
Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)
TALLO
TENEUR EN AZOTE
TENEUR EN MATIERE SECHE
TIGE
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Summary:Actual nitrogen fixation of root nodules of different Albizia-Rhizobium symbioses was compared with the potential nitrogen fixation of isolated bacteroids. The potential nitrogen fixation exceeded actual nitrogen fixation in all symbionts. After addition of nitrate the actual nitrogen fixation decreased more than did potential nitrogen fixation in effective symbiosis, whereas in a less effective symbiosis, the actual and potential nitrogen fixation increased as a result of better photosynthate supply to the roots and nodules. As confirmed by correlation analysis, the nitrogen fixation and photosynthetic yield of suboptimum symbioses were relatively enhanced by dressing with inorganic nitrogen fertilizer.
ISSN:0015-5632
1874-9356
DOI:10.1007/bf02816951