Page 2 Plant-Bacteria Interactions Edited by Iqbal Ahmad, John ...

8.5
Conclusions
We have demonstrated that P. aurantiaca SR1 produces compounds that stimulate
the growth of both wheat and alfalfa cultivars. It increased the number and size of
nodules in alfalfa roots compared to S. meliloti inoculated alone, suggesting that the
nitrogen fixation is enhanced. Also, this strain promotes wheat growth and the
inoculation would reduce the use of nitrogen fertilizers by 50%.
The understanding of the mechanisms involved in antibiosis adds another beneficial
property of P. aurantiaca SR1 upon plant growth; thus, it may serve as an ideal
microorganism to be used for enhancing crop yields through its biocontrol and
PGPR effects.
Is important to state that P. aurantiaca SR1 has not been reported by other
Argentina research groups and that it has been formulated by the industry as an
inoculant for its application in different countries.
Acknowledgments
We are grateful to Secretaría de Ciencia y Técnica of Universidad Nacional de
Río Cuarto and Agencia Nacional de Promoción Científica y Tecnológica
(ANPCyT).
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