Growth promoting effect of Azospirillum brasilense on Casuarina cunninghamiana Miq. seedlings

The growth of Casuarina cunninghamiana seedlings was stimulated when inoculated with Azospirillum brasilense. This resulted in a higher biomass production than in uninoculated controls in the presence or absence of a non-nodulating strain of Frankia. Increase in whole plant dry weight was due to a s...

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Bibliographic Details
Published in:Plant and soil 1991-08, Vol.135 (1), p.121-124
Main Authors: Rodriguez-Barrueco, C. (Instituto de Recursos Naturales y Agrobiologia CSIC, Salamanca (Spain)), Cervantes, E, Subbarao, N.S, Rodriguez-Caceres, E
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Azospirillum
Azospirillum brasilense
AZOSPIRILLUM BRASILIENSE
Biological and medical sciences
CASUARINA
Economic plant physiology
FIJACION DEL NITROGENO
FIXATION DE L'AZOTE
FRANKIA
Fundamental and applied biological sciences. Psychology
Inoculation
Inoculum
NITROGEN FIXATION
Nutrient solutions
Plant growth
Plant roots
Plants
Seedlings
Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)
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Summary:The growth of Casuarina cunninghamiana seedlings was stimulated when inoculated with Azospirillum brasilense. This resulted in a higher biomass production than in uninoculated controls in the presence or absence of a non-nodulating strain of Frankia. Increase in whole plant dry weight was due to a significant increase in both shoot and root biomass, which corresponded with a higher total Í content of the plants inoculated with Azospirillum. No such effects were observed under inoculation with a non-nodulating Frankia strain. These results suggest that the growth-promoting substances provided by A. brasilense may have enhanced the growth of Casuarina seedlings.
ISSN:0032-079X
1573-5036
DOI:10.1007/BF00014784