Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (12): 2932-2938.DOI: 10.16178/j.issn.0528-9017.20240001

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Effects of inoculating plant growth-promoting rhizobacteria on the quality of Peucedanum praeruptorum and nutrient content in rhizosphere soil

DENG Qiaosheng1(), ZHANG Meng1,2, LUO Ya1, RUI Lu1, GUO Dongqin1, ZHOU Nong1,2,*()   

  1. 1. College of Biology and Food Engineering, Chongqing Three Gorges University, Green Planting and Deep Processing of Genune Medicinal Materials in Three Gorges Reservoir Area, Chongqing Engineering Research Center, Chongqing 404020
    2. College of Pharmacy, Dali University, Dali 671000, Yunnan
  • Received:2024-06-29 Online:2025-12-11 Published:2025-12-17

Abstract:

To investigate the effects of different plant growth-promoting rhizobacteria (PGPR) on the quality of Peucedanum praeruptorum and the nitrogen (N), phosphorus (P), and potassium (K) content in the rhizosphere soil, and to provide a reference for the development of microbial fertilizers and field cultivation of P. praeruptorum, this study established nine treatments inoculated with different PGPR strains, using sterile saline inoculation as the control (CK). The results showed that all PGPR treatments significantly (p<0.05) increased the content of praeruptorin A and praeruptorin B in the roots of P. praeruptorum. Except for a few treatments, most treatments increased the N, P, and K content in the roots and rhizosphere soil to varying degrees. The absorption capacity of the roots for the N,P,and K elements followed the order: P>N>K. Correlation analysis revealed that the content of praeruptorin A was significantly positively correlated with root nitrogen content, while the content of praeruptorin B was significantly negatively correlated with root nitrogen content and significantly positively correlated with soil phosphorus content. In conclusion, PGPR inoculation can effectively enhance the N, P, and K content in the rhizosphere soil and promote the accumulation of medicinal components, thereby improving the quality of P. praeruptorum.

Key words: plant growth-promoting rhizobacteria (PGPR), Peucedanum praeruptorum, medicinal components, soil

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