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Pre-soil fumigation with ammonium bicarbonate and lime modulates the rhizosphere microbiome to mitigate clubroot disease in Chinese cabbage

文献类型: 外文期刊

作者: Zhang, Jinhao 1 ; Zhou, Xinghai 1 ; Zhang, Yu 1 ; Dai, Zhenlin 1 ; He, Zulei 1 ; Qiu, Yue 1 ; Alharbi, Sulaiman Ali 4 ; Wei, Fangjun 1 ; Wei, Lanfang 1 ; Ahmed, Waqar 6 ; Ji, Guanghai 1 ;

作者机构: 1.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bioresources, Kunming, Yunnan, Peoples R China

2.Yunnan Agr Univ, Key Lab Agrobiodivers & Pest Management, Minist Educ, Kunming, Yunnan, Peoples R China

3.Guangxi Acad Agr Sci, Plant Protect Res Inst, Key Lab Green Prevent & Control Fruits & Vegetabl, Minist Agr & Rural Affairs,Guangxi Key Lab Biol C, Nanning, Guangxi, Peoples R China

4.King Saud Univ, Dept Bot & Microbiol, Coll Sci, Riyadh, Saudi Arabia

5.Yunnan Agr Univ, Agr Fdn Expt Teaching Ctr, Kunming, Yunnan, Peoples R China

6.South China Agr Univ, Coll Plant Protect, Guangdong Prov Key Lab Microbial Signals & Dis Co, Guangzhou, Peoples R China

关键词: Plasmodiophora brassicae; biological control; rhizosphere microbiome; disease suppression; soil pH

期刊名称:FRONTIERS IN MICROBIOLOGY ( 影响因子:4.5; 五年影响因子:5.2 )

ISSN:

年卷期: 2024 年 15 卷

页码:

收录情况: SCI

摘要: Background: Plasmodiophora brassicae is an ever-increasing threat to cruciferous crop production worldwide. Aims and methods: This study investigated the impact of pre-soil fumigation with ammonium bicarbonate (N) and lime (NB) to manage clubroot disease in Chinese cabbage through 16S rRNA gene amplification sequencing. Results: We found that soil fumigation with N and NB suppressed disease incidence by reducing the soil acidity and population of P. brassicae in the rhizosphere. Minimum disease incidence and maximum relative control effect of about 74.68 and 66.28% were achieved in greenhouse and field experiments, respectively, under the combined application of ammonium bicarbonate and lime (LNB) as compared with N, NB, and control (GZ). Microbial diversity analysis through Miseq sequencing proved that pre-soil fumigation with N, NB, and LNB clearly manipulated rhizosphere microbial community composition and changed the diversity and structure of rhizosphere microbes compared with GZ. Bacterial phyla such as Proteobacteria, Bacteriodetes, and Acidobacteria and fungal phyla including Olpidiomycota and Ascomycota were most dominant in the rhizosphere of Chinese cabbage plants. Soil fumigation with N and NB significantly reduced the abundance of clubroot pathogen at genus (Plasmodiophora) level compared with GZ, while decreased further under combined application LNB. Microbial co-occurrence network analysis showed a highly connected and complex network and less competition for resources among microbes under combined application LNB. Conclusion: We conclude that for environmentally friendly and sustainable agriculture, soil fumigation with combined ammonium bicarbonate and lime plays a crucial role in mitigating Chinese cabbage clubroot disease by alleviating soil pH, reducing pathogen population, and manipulating the rhizosphere microbiome.

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