Analysis of the rhizosphere bacterial diversity of var. from different experimental sites and varieties (strains).

BACKGROUND

Rhizosphere bacteria play important roles in plant growth and secondary metabolite accumulation. Moreover, only with favorable production areas and desirable germplasm can high-yield and high-quality medicinal materials be produced. However, whether origin and germplasm indirectly affect the yield and quality of var. through rhizosphere bacterial effects are not known.

METHODS

In this study, a high-throughput sequencing strategy was used to explore the relationship between the rhizosphere bacterial community and the cultivation of var. from different production areas and germplasm for the first time.

RESULTS

(1) was the dominant bacterial phylum in the rhizosphere soil of var. , and these bacteria were stable and conserved to a certain extent. (2) High abundance of was an important rhizospheric indicator of high yield, and high abundance of was an important indicator of high quality. and might have an important relationship with the yield and quality of var. , respectively. (3) PCoA cluster analysis demonstrated that both production area and germplasm affected the bacterial community structure in the rhizosphere of var. to a certain extent, and production area had the greatest effect. In addition to available potassium, the rhizosphere soil nutrient levels of different production areas strongly affected the bacterial diversity and community. These findings provide a theoretical basis for the exploitation and utilization of rhizosphere microbial resources of var. and offer a novel approach for increasing the yield and quality of this crop.