A bacillus strain, a microbial inoculant comprising the strain and use thereof in promoting the growth of gansong

Abstract

The application provides a bacillus strain, a microbial inoculum containing the strain and the use of the bacillus strain in promoting the growth of gansong, and belongs to the technical field of microorganisms. The Narja-SMU-B6 strain (the preservation number is CGMCC No. 37534) screened by the application can produce an iron carrier, promote the production of IAA and inhibit the yellowing of gansong leaves, and has excellent effects of promoting the growth of gansong. Experiments prove that the strain can significantly promote the photosynthesis, chlorophyll, leaf length and root weight of gansong plants; meanwhile, the strain can improve the soil organic matter, hydrolytic nitrogen nutrient index, and the content of gansong neokon; the strain has a remodeling effect on the metabolism of gansong, enhances the photosynthetic capacity and stress resistance of leaves, promotes the amino acid metabolism pathway, optimizes the nitrogen utilization efficiency, and supports the growth of gansong. The application provides an important basis for the design of microbial fertilizers and the analysis of plant-microorganism interaction mechanisms, and provides reliable microbial technical support for the sustainable cultivation of medicinal plants gansong in the Qinghai-Tibet Plateau.

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