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Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (1): 202-218.doi: 10.16420/j.issn.0513-353x.2025-0073

• Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Analysis of Fungal Community in Rhizosphere Soil of Rubus corchorifolius Under Four Forest Stands in Jinyun Mountain

LÜ Yaru1, LI Jie1, GU Xirong1,*(), CUI Yao2, HU Jia1   

  1. 1 College of Resources and EnvironmentSouthwest University, Chongqing 400716, China
    2 Yunnan Academy of Ecological and environmental Sciences, Kunming 650034, China
  • Received:2025-04-24 Revised:2025-10-23 Online:2026-01-25 Published:2026-01-26
  • Contact: GU Xirong

Abstract:

This study aims to promote the rational utilization of China’s forest land resources and to identify suitable forest types for the understory cultivation of Rubus corchorifolius. Using R. corchorifolius shrubland as a reference,its rhizosphere soil were investigated in three typical mid-subtropical forest stands i.e. Pinus massonianaPhyllostachys ubescens,and Citrus reticulata in Jinyun Mountain,Chongqing. High-throughput sequencing was employed to analyze fungal diversity and its relationship with soil nutrients. Results showed that the fungal diversity index of rhizosphere soil was no significantly different between Pinus massoniana and R. corchorifoliu stands,but was significantly higher than that in Phyllostachys ubescens and C. reticulata stands. Ascomycota,Basidiomycota,and Mortierellomycota were the dominant fungal phyla,collectively accounting for over 90% of the totally relative abundance under R. corchorifoliusC. reticulata,and P. massoniana stands,while > 40% under Phyllostachys ubescens stand. The key differential fungal genera distinctly varied among the four stands:Talaromyces and Tolypocladium in the R. corchorifolius stand;Metarhizium and Penicillium in the Pinus massoniana stand;Aspergillus and Chaetomium in the C. reticulata stand;and Unclassified_k_Ascomycota in the Phyllostachys ubescens stand. Soil available phosphorus and organic carbon were the critical nutrient factors influencing the distribution of fungal communities in R. corchorifolius rhizosphere soil. The saprotrophic fungi were the primary functional groups under both Pinus massoniana and R. corchorifolius stands,whereas arbuscular mycorrhizal fungi and parasitic fungi were predominant under Phyllostachys ubescens and C. reticulata stands. Overall,the rhizosphere soil nutrients were favorable under Pinus massoniana and R. corchorifolius stands than under other two stands while the major key fungal genera might have the function of phosphorus solubilization. In conclusion,the Pinus massoniana and R. corchorifolius stands exhibited more favorable rhizosphere soil nutrients. Their key differential genera are likely capable of phosphorus solubilization,and they shared similar fungal species composition with significantly higher richness and diversity compared to the C. reticulata and Phyllostachys ubescens stands. Therefore,the Pinus massoniana forest stand is recommended as a suitable site for the understory cultivation of R. corchorifolius.

Key words: Rubus corchorifolius, forest stand, fungal diversity, soil nutrient