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Title

Differential effects of coinoculations with Pseudomonas jessenii PS06 (a phosphate-solubilizing bacterium) and Mesorhizobium ciceri C-2/2 strains on the growth and seed yield of chickpea under greenhouse and field conditions.

AuthorsValverde Portal, Ángel; Burgos, Araceli; Fiscella, Tiziana; Rivas, Raúl ; Velázquez, Encarna ; Rodríguez Barrueco, Claudino ; Cervantes, Emilio ; Chamber, Manuel; Igual, José Mariano
KeywordsChickpea.
Mesorhizobium
PGPR
Phosphate-solubilizing bacteria
Plant yield
Pseudomonas
Issue Date2007
PublisherSpringer
CitationFirst International Meeting on Microbial Phosphate Solubilization. Developments in Plant and Soil Sciences. Editors E. Velázquez, C. Rodríguez-Barrueco. Volume 102. 2007, p: 44-50
AbstractIn the course of a project carried out in two regions of Spain, Castilla y Leo´ n and Andalucı´ a, aiming to find useful biofertilizers for staple grain-legumes, an efficient rhizobia nodulating chickpea (termed as C-2/2) and a powerful in vitro phosphate-solubilizing bacterial strain (termed as PS06) were isolated. Analyses of their 16S rDNA sequence indicated that they belong to the bacterial species Mesorhizobium ciceri and Pseudomonas jessenii, respectively. Greenhouse and field experiments were carried out in order to test the effect of single and dual inoculations on chickpea (ecotype ILC-482) growth. Under greenhouse conditions, plants inoculated with Mesorhizobium ciceri C-2/2 alone had the highest shoot dry weight. The inoculation treatment with P. jessenii PS06 yielded a shoot dry weight 14% greater than the uninoculated control treatment, but it was not correlated with shoot P contents. However, the co-inoculation of C-2/2 with PS06 resulted in a decrease in shoot dry weight with respect to the inoculation with C-2/2 alone. Under field conditions, plants inoculated with M. ciceri C-2/2, in single or dual inoculation, produced higher nodule fresh weight, nodule number and shoot N content than the other treatments. Inoculation with P. jessenii PS06 had no significant effect on plant growth. However, the co-inoculation treatment ranked the highest in seed yield (52% greater than the uninoculated control treatment) and nodule fresh weight. These data suggest that P. jessenii PS06 can act synergistically with M. ciceri C-2/2 in promoting chickpea growth. The contrasting results obtained between greenhouse and field experiments are discussed.
DescriptionFirst International Meeting on Microbial Phosphate Solubilization. Salamanca, Spain, 16-19 july 2002. 8 p.
Publisher version (URL)http://www.springerlink.com/content/978-1-4020-4019-1#section=290601&page=3&locus=0
URI10261/33271
ISBN978-1-4020-4019-1
Appears in Collections:(IRNASA) Libros y partes de libros
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