Paper Details

PJB-2024-445

Effects of phosphate-solubilizing bacteria on element content in rhizomes and rhizosphere soil of Paris polyphylla var. Yunnanensis

Fumei Pan, Kai Wang, Lingfeng Xu, Guangzhi Wang, You Zhou and Nong Zhou
Abstract

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This study aimed to investigate the impact of phosphate-solubilizing bacteria on the contents of 5 heavy metals and 10 nutrients in the rhizomes and rhizosphere soil of Paris polyphylla var. yunnanensis. A pot experiment was conducted by inoculating three bacterial strains into the rhizosphere soil. Subsequently, the element content was determined by microwave digestion using inductively coupled plasma mass spectrometry. The results showed that the contents of N, P, Ca, Mg, Fe, Cu, and Zn in the rhizomes were higher in the 7 treatment groups than in the control (CK) group. Also, the contents of K, Ca, Mg, Na, Cu, and Zn in the rhizosphere soil were higher in these groups than in the CK group. Further, the Pb contents in rhizomes were higher in the treatment groups than in the CK group. Except for Cd, the contents of the other heavy metals in the rhizosphere soil were higher in the treatment groups compared with the CK group. The contents of Pb in rhizomes and Cd in the rhizosphere soil in the treatment groups slightly exceeded the standard limit. The enrichment analysis showed that the phosphate-solubilizing bacteria promoted the enrichment of P, Cu, Zn, K, Ca, and Mg but reduced the enrichment of heavy metals in the rhizomes of Paris polyphylla var. yunnanensis. The correlation analysis showed that the contents of As and Hg in rhizomes were negatively correlated, whereas the contents of other elements were positively correlated. The contents of Fe, Mn, and Zn in soil were positively correlated, whereas the contents of Pb and Hg were negatively correlated. Zn and Hg were positively correlated with Cr and Pb in rhizosphere soil. In conclusion, the application of phosphate-solubilizing bacteria can enhance the concentration of nutrient elements in rhizomes and rhizosphere soil and reduce the enrichment of heavy metals in Paris polyphylla var. yunnanensis, thereby maintaining soil fertility.

 

To Cite this article: Pan, F., K. Wang, L. Xu, G. Wang, Y. Zhou and N. Zhou. 2026. Effects of phosphate-solubilizing bacteria on element content in rhizomes and rhizosphere soil of Paris polyphylla var. Yunnanensis. Pak. J. Bot., 58(3): DOI: http://dx.doi.org/10.30848/PJB2026-3(12)  
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