Phosphate dissolving bacterium and acquisition method thereof

Abstract

The invention provides a phosphate dissolving bacterium and an acquisition method thereof, belonging to the field of agricultural biotechnology. The phosphate dissolving bacterium and the acquisition method thereof can enrich the genetic resource of wild phosphate dissolving bacteria and enlarge a backup library for whole-genome breeding of phosphate dissolving bacteria. The phosphate dissolving bacterium provided by the invention is named as YYF22 and is preserved in China Center for Type Culture Collection with an accession number of CCTCC No: M2015043. The colony characteristics of the phosphate dissolving bacterium are as follows: the YYF22 strain is coccobacillus with a length of 1.2 to 2.9 [mu]m and a width of 0.4 to 1.5 [mu]m; the phosphate dissolving bacterium is normally arrayed in pairs and may independently exist; the phosphate dissolving bacteria sometimes adhere to from a filose shape or chain shape; the phosphate dissolving bacterium is free of flagellum, has a capsule, and cannot move; and on an LB flat, the colony of the bacterium has a neat edge, a moist surface and low bulges, and is glossy and cream yellow.

Description

technical field [0001] The invention relates to the field of agricultural biotechnology, in particular to a phosphate solubilizing bacterium and an acquisition method thereof. Background technique [0002] The content of phosphorus in plants is second only to nitrogen and potassium, and it is one of the key nutrients for plant growth and development. Phosphorus-deficient soil generally refers to the soil with soil available phosphorus (P) less than 10mg / kg. The area of ​​phosphorus-deficient soil in my country exceeds 74% of the total cultivated land area. Most of the phosphorus in the soil exists in the form of insoluble phosphate, and plants cannot directly Absorb and utilize. In order to meet the needs of production, most of the cultivated fields in my country need to supplement a large amount of phosphorus fertilizers. Due to long-term accumulation and enrichment, a series of production and ecological problems such as soil compaction and nutrient imbalance have been caus...

AI Technical Summary

Problems solved by technology

Generally speaking, the wild strains used for industrial production and development are extremely single. Except for the development and application of Bacillus megaterium phospholyticus, others are far from systematic and in-depth.

As far as the screening method of phosphate-solubilizing bacteria is concerned, the method was single in the past, and the improvement and innovation of the medium were lacking, which limited the discovery of novel strains

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