Molecular Characterization of Phosphorus Solubilizing Bacteria. Pseudomonas aeruginosa

Phosphorus (P) is a limiting crop nutrient in most of the Pakistani soils and farmers have to add huge amounts of DAP fertilizer to overcome this problem. These chemical phosphorus fertilizers not only increase the cost of crop production, but also pollute the environment. Keeping in view the importance of low cost production of wheat with high yield using environmentally safe management approach, the present study was designed to isolate P solubilizing bacteria from wheat rhizosphere of different un-explored soils and find their optimal efficacy under different growth and environmental conditions. Additionally, the mechanisms and genes involved in P solubilization were explored.

磷（P）是巴基斯坦绝大多数农田土壤中的限制性作物营养元素，农户需施用大量磷酸二铵（DAP）肥料以缓解该养分限制问题。这类化学磷肥不仅会抬高作物生产成本，还会对生态环境造成污染。鉴于采用环境友好型管理模式实现小麦低成本高产的重要意义，本研究旨在从不同未被研究过的土壤的小麦根际环境中分离溶磷细菌，并探究其在不同生长及环境条件下的最佳功效。此外，本研究还对溶磷作用所涉及的分子机制与功能基因展开了探究。