Survival of phosphate-solubilizing bacteria against DNA damaging agents.

Publisher: Canadian Science Publishing Country of Publication: Canada NLM ID: 0372707 Publication Model: Print Cited Medium: Internet ISSN: 1480-3275 (Electronic) Linking ISSN: 00084166 NLM ISO Abbreviation: Can J Microbiol Subsets: MEDLINE

Publication: 2011- : Ottawa, ON : Canadian Science Publishing
Original Publication: Ottawa, Canada : National Research Council, [1954-

DNA Damage* ; Soil Microbiology*; Burkholderia cepacia/*physiology ; Enterobacteriaceae/*physiology ; PQQ Cofactor/*biosynthesis ; Phosphates/*metabolism ; Pseudomonas oleovorans/*physiology; Burkholderia cepacia/classification ; Burkholderia cepacia/isolation & purification ; Calcium Phosphates/metabolism ; Catalase ; Enterobacter/classification ; Enterobacter/genetics ; Enterobacter/isolation & purification ; Enterobacter/physiology ; Enterobacteriaceae/classification ; Enterobacteriaceae/genetics ; Enterobacteriaceae/isolation & purification ; Gluconates/metabolism ; India ; Mitomycin/pharmacology ; Oxidative Stress ; Pantoea/classification ; Pantoea/genetics ; Pantoea/isolation & purification ; Pantoea/physiology ; Polymerase Chain Reaction ; Proteus mirabilis/classification ; Proteus mirabilis/genetics ; Proteus mirabilis/isolation & purification ; Proteus mirabilis/physiology ; Pseudomonas oleovorans/classification ; Pseudomonas oleovorans/genetics ; Pseudomonas oleovorans/isolation & purification ; Radiation Tolerance ; Rhizosphere ; Ultraviolet Rays

Phosphate-solubilizing bacteria (PSBs) were isolated from different plant rhizosphere soils of various agroecological regions of India. These isolates showed synthesis of pyrroloquinoline quinone (PQQ), production of gluconic acid, and release of phosphorus from insoluble tricalcium phosphate. The bacterial isolates synthesizing PQQ also showed higher tolerance to ultraviolet C radiation and mitomycin C as compared to Escherichia coli but were less tolerant than Deinococcus radiodurans. Unlike E. coli, PSB isolates showed higher tolerance to DNA damage when grown in the absence of inorganic phosphate. Higher tolerance to ultraviolet C radiation and oxidative stress in these PSBs grown under PQQ synthesis inducible conditions, namely phosphate starvation, might suggest the possible additional role of this redox cofactor in the survival of these isolates under extreme abiotic stress conditions.

0 (Calcium Phosphates)
0 (Gluconates)
0 (Phosphates)
50SG953SK6 (Mitomycin)
72909-34-3 (PQQ Cofactor)
EC 1.11.1.6 (Catalase)
K4C08XP666 (tricalcium phosphate)
R4R8J0Q44B (gluconic acid)

Date Created: 20101022 Date Completed: 20101217 Latest Revision: 20131121

20250114

10.1139/w10-067

20962905