Cloning and Functional Analysis of pqq Genes Phosphorus Solubilizing From Bacillus Mycoides Gnyt1

Abstract [Background]The pqq genes which encodes phosphorus solubilizing from Bacillus mycoides Gnyt1 has been cloned and characterized. The role of this action on the function of pqq genes were detected. The phosphorus soluble pqq genes can secrete some specific organic activity acids to work but don’t destroy the living environment of plants such as soil. In contrast, this plants containing the pqq genes grew well, even better than other plants with lower phosphorus solubilization, in the phosphorus free medium even though its pqq genes activity and turned out phosphorus ring, while pqq dependent expression was induced.[Results]This reaserch that five pqq genes were cloned from Bacillus mycoides Gnyt1, phylogenetic analysis revealed that pBI-pqqA, pBI-pqqB, pBI-pqqC and pBI-pqqE similarly cluster with Phosphorus-soluble protein. Under the action of five promoters, each coding region of pqqA, pqqB, pqqC and pqqE from Bacillus mycoides Gnyt1 can directly participate in the phosphate solubilization of the strain, directly improving the phosphate solubilizing capacity of the plant, which have strong nitrogenase activity. Interestingly, changes in the phosphate solubilizing gene result in complete loss of the phosphate solubilization of the strain. However, the ability to dissolve the phosphorus ring and to dissolve the phosphorus was also exhibited in the medium having five phosphorus-dissolving genes.[Conclusions]The results indicated that the pqq genes were successfully cloned and a new specific phosphate-dissolving strain was formed. In this research, pqq genes were first cloned from Bacillus mycoides Gnyt1.