Isolation and Characterization of Zinc Solubilizing Bacteria from Rhizosphere Soil of Latur District, Marathwada, India

Rajmahammad Rasul Tamboli

Department of Microbiology, Maharashtra Udayagiri Mahavidyalaya, Udgir- 413517 India

Corresponding author E-mail: raju_tamboli2005@rediffmail.com

DOI : http://dx.doi.org/10.13005/bbra/2796

ABSTRACT: Rhizosphere soil samples from Wheat crop were collected from the 10 different locations in Latur district of Marathwada region with the objective to isolate the zinc solubilizing bacteria, their screening and characterization. Zinc carbonate was used as insoluble zinc source. Out of 10 Zn solubilizers, 3 most outstanding isolates were maintained for further screening for mineral solubilization (Zn and K). Among these RRT19, RRT34 and RRT13 which was identified as Bacillus cereus and Bacillus subtilis by morphological and biochemical test. These isolates showed maximum zone of solubilization with 34, 31 to 30 mm on liquid salt agar medium after 48 hrs of incubation respectively. The bacterial species isolated from the Rhizosphere soil can be use in soils that are deficient in Zinc or where insoluble zinc is abundant. The present study concluded that the use of zinc solubilising bacteria in the zinc deficient soil will help to enhance the growth and yield of wheat crop.

KEYWORDS: Bacillus Cereus; Bacillus Subtilis; Wheat; Zinc Solubilizing Bacteria

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