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# Engineered microbial consortia show promise against soil-borne diseases

Publication Date: 19.11.2025, 12:00

New study finds synthetic endophytic communities can enhance crop growth and suppress Fusarium in long-term monoculture systems.

Researchers in China have developed synthetic microbial communities that improve crop growth and limit soil-borne diseases, offering a potential new tool for sustainable agriculture.

A study [published](https://academic.oup.com/hr/advance-article/doi/10.1093/hr/uhaf286/8300575?login=false) in *Horticulture Research* by the Institute of Subtropical Agriculture of the Chinese Academy of Sciences examined how long-term monoculture affects the endophytic microbiome of edible lilies. The team found that continuous cropping reshapes the microbial community inside plant tissues, enriching both harmful pathogens such as *Fusarium oxysporum* and beneficial groups including *Pseudomonas* and *Bacillus*. These organisms interact in what the researchers describe as an “antagonistic equilibrium.”

The analysis also showed that about half of endophytic bacteria originate from soil, compared with less than 10% of fungi, indicating strong selective pressure by the plant on fungal species. From lily bulbs, the team isolated core antagonistic strains—among them *Rhizobium*, *Methylobacterium* and the fungus *Talaromyces*—to assemble several synthetic microbial consortia.

In growth and pathogen-suppression assays, multi-strain consortia outperformed individual isolates. Communities that included both bacterial and fungal members showed the strongest effects against *Fusarium* and produced greater growth benefits for the host plants.

According to corresponding author Prof. Zhu Baoli, the findings clarify how monoculture systems influence endophytic communities and demonstrate a practical framework for engineering targeted microbial consortia to manage Fusarium wilt.

The authors argue that rationally designed SynComs offer a path toward reducing pesticide reliance and addressing replanting stress in intensive production systems, with broader implications for soil health and low-input crop management.

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