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Chinese Agricultural Science Bulletin ›› 2026, Vol. 42 ›› Issue (1): 184-193.doi: 10.11924/j.issn.1000-6850.casb2025-0354

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Research Progress on Soil-Borne Diseases of Patchouli and Its Rhizosphere Microecology Under Continuous Cropping

LIU Haitao1,2,3(), DENG Quanqing2,3, GU Yan2,3, WANG Jihua1,2,3()   

  1. 1 College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070
    2 Crops Research Institute, Guangdong Academy of Agricultural Sciences/ Key Laboratory of Crop Genetic Improvement, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
    3 Guangdong Engineering Research Center for Protection and Utilization of Characteristic South Medicinal Materials, Guangzhou 510640
  • Received:2025-05-12 Revised:2025-10-27 Online:2026-01-15 Published:2026-01-15

Abstract:

This article reviewed the occurrence of soil-borne diseases of Pogostemon cablin and research progress on its rhizosphere microecology under continuous cropping, aiming to provide a theoretical basis for alleviating continuous cropping obstacles. The main soil-borne diseases of P. cablin included bacterial wilt incited by Ralstonia solanacearum and root rot caused by Fusarium oxoysporum. Plant pathogens in P. cablin disrupted the rhizosphere microecological balance, inhibiting the growth and development of plants, reducing yield and medicinal compound accumulation, and directly impacting planting benefits. Meanwhile, continuous cropping of P. cablin induced allelochemical release from its roots, triggering soil acidification and nutrient imbalance that restructured rhizosphere microbial community. The imbalance of the rhizosphere microbial community was identified as a pivotal factor driving disease development in continuously cropped P. cablin. Beneficial rhizobacteria suppressed soil-borne pathogens through competitive exclusion, antimicrobial metabolite production, and induced systemic resistance (ISR) mechanisms, whereas synthetic microbial communities (SynComs) supplementation alleviated the occurrence of continuous cropping obstacles. Recent advancements in multi-omics technologies (e.g., genomics, metabolomics) and SynComs have revolutionized soil-borne disease research, offering novel strategies for pathogen control and sustainable agricultural practices. Future research must prioritize clarifying the pathogen pathogenesis mechanisms, optimizing the application of SynComs, and constructing a comprehensive control system to provide theoretical basis and technical support for the sustainable development of the P. cablin industry.

Key words: Pogostemon cablin, continuous cropping, soil-borne diseases, rhizosphere microecology, multi-omics technologies, synthetic microbial communities