STUDY ON PHOSPHATE SOLUBILIZING ABILITY OF SOME BACTERIAL ISOLATES AND DETERMINATION OF SOLUBILIZED PHOSPHORUS FRACTIONATION IN SUPERNATANT AND MICROBIAL BIOMASS

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Ebrahimi Mitra; SAFARI SINEGANI ALI AKBAR; SARIKHANI MOHAMMAD REZA; ALIASGHARZAD NASSER

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Journal: BIOLOGICAL JOURNAL OF MICROORGANISM Year:2018 | Volume:7 | Issue:25 Page(s): 109-125

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Title

STUDY ON PHOSPHATE SOLUBILIZING ABILITY OF SOME BACTERIAL ISOLATES AND DETERMINATION OF SOLUBILIZED PHOSPHORUS FRACTIONATION IN SUPERNATANT AND MICROBIAL BIOMASS

Author(s)

Ebrahimi Mitra | SAFARI SINEGANI ALI AKBAR | SARIKHANI MOHAMMAD REZA | ALIASGHARZAD NASSER | Issue Writer Certificate

Keywords

PHOSPHATE SOLUBILIZING BACTERIAQ1

TRICALCIUM PHOSPHATEQ1

ROCK PHOSPHATEQ1

PHOSPHORUS IN BIOMASSQ1

PHOSPHORUS IN SUPERNATANTQ1

Abstract

Introduction: PHOSPHATE SOLUBILIZING BACTERIA play roles in phosphate solubilizing from mineral sources. These bacteria with different mechanisms make it soluble, some parts of solubilized P were absorbed in their biomass and the other parts, released in the soluble form which can be used by other organisms.Materials and methods: In this study, 24 bacterial isolates belonged to different genera such as Azotobacter, Pseudomonas, Rhizobium, Beijerinckia, Klebsiella, Agrobacterium, Alcaligenes, Sphingomnas, Microbacterium and Citrobacter were examined to determine solubilized P from two sources of phosphate (TCP and RP) in Sperber medium. This research was carried out in a complementary random design with three replications. At the end of incubation time, solubilized P in supernatant, amount of P in biomass and total solubilized P were measured.Results: The results showed that isolates are efficient in solubilizing P from TCP than RP. By decreasing pH, solubilized P was increased (r=0.775, p<0.01) and it followed by increasing EC (r=0.789, p<0.01). Highest P in supernatant was measured in media inoculated with Pseudomonas, Azotobacter and Agrobacterium. Maximum absorbed P in biomass was determined in Agrobacterium and Citrobacter isolates. However, total solubilized P including (phosphorus in supernatant and PHOSPHORUS IN BIOMASS) were the highest in Agrobacterium and Citrobacter (527.4 and 460.8 mg/l, respectively). Highest bio-absorption percent (P biomass/ P added) was recorded in Klebsiella sp.4A-1 (44.44%) and Agrobacterium sp.22SP-1 (42.33%), and maximum P solubilization rate (P supernatant/ P solubilized total) was observed in Pseudomonas sp.34SPIII (0.51) and Azotobacter chroococcum 44SP-2 (0.5).Discussion and conclusion: In most researches, solubilized P which is present in supernatant takes more attention but PHOSPHORUS IN BIOMASS is ignored which can be mineralized and available with a delay. This study showed that most parts of solubilized P were measured in microbial biomass. Hence, attention to this criterion could help us to select efficient PSB.

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APA: Copy

Ebrahimi, Mitra, SAFARI SINEGANI, ALI AKBAR, SARIKHANI, MOHAMMAD REZA, & ALIASGHARZAD, NASSER. (2018). STUDY ON PHOSPHATE SOLUBILIZING ABILITY OF SOME BACTERIAL ISOLATES AND DETERMINATION OF SOLUBILIZED PHOSPHORUS FRACTIONATION IN SUPERNATANT AND MICROBIAL BIOMASS. BIOLOGICAL JOURNAL OF MICROORGANISM, 7(25 ), 109-125. SID. https://sid.ir/paper/237378/en

Vancouver: Copy

Ebrahimi Mitra, SAFARI SINEGANI ALI AKBAR, SARIKHANI MOHAMMAD REZA, ALIASGHARZAD NASSER. STUDY ON PHOSPHATE SOLUBILIZING ABILITY OF SOME BACTERIAL ISOLATES AND DETERMINATION OF SOLUBILIZED PHOSPHORUS FRACTIONATION IN SUPERNATANT AND MICROBIAL BIOMASS. BIOLOGICAL JOURNAL OF MICROORGANISM[Internet]. 2018;7(25 ):109-125. Available from: https://sid.ir/paper/237378/en

IEEE: Copy

Mitra Ebrahimi, ALI AKBAR SAFARI SINEGANI, MOHAMMAD REZA SARIKHANI, and NASSER ALIASGHARZAD, “STUDY ON PHOSPHATE SOLUBILIZING ABILITY OF SOME BACTERIAL ISOLATES AND DETERMINATION OF SOLUBILIZED PHOSPHORUS FRACTIONATION IN SUPERNATANT AND MICROBIAL BIOMASS,” BIOLOGICAL JOURNAL OF MICROORGANISM, vol. 7, no. 25 , pp. 109–125, 2018, [Online]. Available: https://sid.ir/paper/237378/en

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