
	International Journal of Agricultural Research
	Year: 2009 \| Volume: 4 \| Issue: 2 \| Page No.: 79-87 DOI: 10.3923/ijar.2009.79.87

Phosphate Solubilizing Gluconacetobacter sp., Burkholderia sp. and their Potential Interaction with Cowpea (Vigna unguiculata (L.) Walp.)

M.S. Linu, J. Stephen and M.S. Jisha

Abstract: Eighty-one potential phosphate solubilizing bacteria isolated from rhizosphere soil were screened for their Mineral Phosphate Solubilizing (MPS) ability on Pikovskaya and National Botanical Research Institute`s Phosphate (NBRIP) medium. The majority of the isolates exhibited a strong ability to solubilize hydroxyapatite in both liquid and solid media. The solubilization in liquid medium corresponded with a decrease in the pH of the medium. Two bacterial strains exhibiting high solubilization of Tricalcium Phosphate (TCP) in Pikovskaya liquid cultures were identified as Gluconacetobacter sp. and Burkholderia sp. on the basis of phenotypic features, whole cell Fatty Acid Methyl Ester (FAME) profiles, 16S rDNA typing and carbon Substrate Utilization (SU) using Biolog GN2 plates. Seed inoculation of cowpea by these novel phosphate solubilizers improved nodulation, root and shoot biomass, straw and grain yield and phosphorus and nitrogen uptake of the crop. The dehydrogenase, phosphatase and the available Pcontents of the soil were stimulated by the inoculation with the phosphate solubilizing bacteria. Among the bacterial strains best effect on yield was obtained with Burkholderia sp.

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How to cite this article:

M.S. Linu, J. Stephen and M.S. Jisha, 2009. Phosphate Solubilizing Gluconacetobacter sp., Burkholderia sp. and their Potential Interaction with Cowpea (Vigna unguiculata (L.) Walp.). International Journal of Agricultural Research, 4: 79-87.

DOI: 10.3923/ijar.2009.79.87

URL: https://scialert.net/abstract/?doi=ijar.2009.79.87

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20 May, 2019
rajendra bairwa:
this paper could support my research

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