The importance of rhizospheric microbial phosphate solubilization has now been well documented. However, the performance of these microbes is greatly affected by various environmental stresses. In this study strain of Serratia marcescens NAUKP5 was isolated from the rhizosphere of Oryza sativa from the coastal region of South Gujarat. The bacteria Serratia marcescens NAUKP5 was able to solubilize insoluble rock phosphate up to 625.16±0.01 µM with decrease in pH 4.1±0.01 after 10 days of incubation. The strain was also characterized for various morphological and biochemical tests. The growth of Serratia marcescens NAUKP5 was also tested for wide range of temperature, pH, carbon source, nitrogen source and buffering of the media. It was able to tolerate NaCl concentration up to 750mM and showed resistance against three antibiotics.
Rock phosphate, Rhizosphere, Phosphate solubilization, Physiological studies.
Share This Article
© The Author(s) 2016. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.