Bacillus-loaded biochar as a dual strategy for Fusarium wilt control and soil health improvement in Peanut cultivation
文献类型： 外文期刊
作者： Li, Qibiao 1 ; Hu, Yonghua 1 ; Zhang, Xuejiao 1 ; Xu, Lei 1 ; Xu, Zhijun 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Ind Technol Res & Dev Ctr, Zhanjiang Expt Stn, Guangdong Modern Agr Cultivated Land Conservat & W, Zhanjiang 524013, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Peoples R China
3.Hainan Inst Trop Agr Resources, Key Lab Biol & Genet Resources Trop Crops Hainan P, Haikou 571101, Peoples R China
4.Chinese Acad Trop Agr Sci, Natl Key Lab Trop Crop Breeding, Zhanjiang Expt Stn, Sanya 572024, Peoples R China
关键词： Immobilized microbe; Sustainable agriculture; Biological control; qPCR; Network analysis
期刊名称：APPLIED SOIL ECOLOGY （ 影响因子：5.0； 五年影响因子：5.4 ）
ISSN： 0929-1393
年卷期： 2025 年 213 卷
页码：
收录情况： SCI
摘要： The combination of biocontrol agent and biochar presents an eco-friendly alternative for managing soilborne diseases, reducing the dependence on chemical fungicides. However, it remains unclear how biocontrol agent loaded biochar alleviates wilt disease and its interactions with soil microorganisms. This study investigated the effects of Bacillus subtilis BT-loaded biochar (BTBC) compared to the application of the biocontrol strain (BT) and biochar (BC) in controlling peanut wilt disease and its rhizosphere regulation mechanisms. The results showed that BTBC significantly increased the intensity of B.subtilis in the rhizosphere (by 2.7 times) and roots (by 65.3 times) compared to the disease control (FO). It also decreased the disease incidence of peanuts by 75 % and the abundance of Fusarium oxysporum in roots by 94.7 %, simultaneously enhancing the resistance against disturbance of the rhizosphere microbial community. BTBC significantly increased the content of soil organic matter and available potassium, and notably improved the dry weight of peanut pods. In conclusion, the application of B.subtilis loaded biochar not only boosted the colonization of B.subtilis in the environment and its efficacy against F.oxysporum-induced wilt disease, but also improved the soil nutrients and microbial community's resistance to disturbance. These findings provide new insights into managing and controlling the peanut wilt disease.
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