Long-term effects of chloropicrin fumigation on soil microbe recovery and growth promotion of Panax notoginseng

Wang, Xin; Wang, Qing; Li, Wenjing; Zhang, Daqi; Fang, Wensheng; Li, Yuan; Wang, Qiuxia; Cao, Aocheng; Yan, Dongdong

doi:10.3389/fmicb.2023.1225944

Cited by 6 publications

(3 citation statements)

References 57 publications

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“…Soil fumigation with ammonium bicarbonate and lime can directly influence pathogens, improve the soil environment by decreasing soil acidity, and reshape soil microbial community structure, thereby directly or indirectly preventing and controlling soilborne diseases ( Liu et al, 2016 ; Deng et al, 2021 ). It has been reported that soil fumigation altered soil microflora in plant monoculture systems by changing soil microbial community structure and stimulating the potentially beneficial microbial consortia ( Li et al, 2016 ; Wang et al, 2023 , 2024 ). The structure of microbial communities separates clearly under fumigated (N, NB, and LNB) and non-fumigated (GZ) treatments as revealed by PCoA based on Weighted Unifrac and Unweighted Unifrac analysis.…”

Section: Discussionmentioning

confidence: 99%

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

Zhang,

Zhou,

Zhang

et al. 2024

Front. Microbiol.

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BackgroundPlasmodiophora brassicae is an ever-increasing threat to cruciferous crop production worldwide.Aims and methodsThis 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.ResultsWe 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.ConclusionWe 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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Section: Discussionmentioning

confidence: 99%

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

Zhang,

Zhou,

Zhang

et al. 2024

Front. Microbiol.

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“…Soil fumigation can control and kill root-knot nematodes, soil-borne pathogens, and weeds [43]. Wang et al [44] reported that the inhibition rate of Phytophthora spp. was still 97.8% and 75.0% in the second and third years after chloropicrin fumigation, respectively.…”

Section: Discussionmentioning

confidence: 99%

Effects of Soil Amendments on Soil Properties, Soil-Borne Pathogens, and Strawberry Growth after Dazomet Fumigation

Li,

Andom,

Fang

et al. 2023

Agriculture

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Soil fumigation can kill soil pathogens and solve the problem of crop continuous cropping. However, soil fumigation also has negative effects on the soil environment. One way to mitigate the negative effects is to apply soil amendments, but there is limited evidence of the effects of combining soil fumigation and amendments. This study was a controlled environmental pot trial. We measured the effects of dazomet fumigation combined with soil amendments on soil-borne pathogens, soil nutrients, enzyme activities, and strawberry growth. The results showed that dazomet fumigation combined with soil amendments significantly increased the content of ammonium nitrogen, available phosphorus and organic matter and increased soil activities by varying degrees. We also found that the control effect of soil-borne pathogens Fusarium spp. and Phytophthora spp. was further enhanced, reaching 88.97–96.88%. Correlation analysis showed that the growth indices of strawberries such as plant height, stem diameter, chlorophyll content, and fresh weight were negatively correlated with Fusarium spp. (R = −0.75, R= −0.62, R = −0.71, R = −0.88; p < 0.01) and Phytophthora spp. (R = −0.72, R= −0.72, R = −0.78, R = −0.91; p ≤ 0.001), respectively. The effect of fumigation combined with soil amendments was better than that of fumigation alone, and silicon fertilizer had the best effect. Our study suggests that dazomet fumigation combined with soil amendments can improve soil nutrient supply, activate soil enzyme activities, enhance the control effect of soil-borne pathogens, and thus promote strawberry growth.

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“…The cropping obstacle, characterized by reduced crop yield and quality resulting from prolonged monoculture continuous cropping, has been observed in both annual and perennial crops (Tan et al 2021 ). After harvest, replanting of traditional Chinese medicine will also cause soil continuous cropping obstacles, resulting in slow growth, increased incidence of soil-borne diseases, and decreased yields (Tagele et al 2023 ; Wang et al 2023b ). The continuous cropping obstacle of traditional Chinese medicine has always been a bottleneck problem in the development of traditional Chinese medicine, especially in the cultivation of American ginseng ( Panax quinquefolius L.) (Xiao et al 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of rotation and Bacillus on the changes of continuous cropping soil fungal communities in American ginseng

Jia,

Chang,

Guan

et al. 2023

World J Microbiol Biotechnol

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The continuous cropping obstacle is the main factor in leading to difficulty in American ginseng replanting. The dormant microbiota in the soil may be the cause of American ginseng disease and eventually caused continuous cropping obstacles, but there are few studies on the dynamic changes of soil microenvironment after American ginseng planting. In this study, we tracked short-term variation in physicochemical properties, enzyme activities, and fungal communities over time-series in soils with continuous cropping obstacle under crop rotation and probiotic Bacillus treatments. Furthermore, we examined the relationships between the important fungal compositions and the soil properties. The results showed that sucrase, cellulase, urease and acid phosphatase activities were significantly increased, while catalase and dehydrogenase were decreased with treatments time. Rotation treatment significantly affected the diversity, dissimilarity degree and species distribution of soil fungal community with continuous cropping obstacle over a short-term. Moreover, beneficial fungal biomarkers such as Cladorrhinum, Oidiodendron, and Mariannaea were accumulated at 48 h under rotation treatments. Almost all fungal biomarkers were negatively correlated with hydrolases and positively correlated with oxidoreductases and acid phosphatase under crop rotation treatments. This study suggested that compared to probiotic Bacillus, crop rotation can significantly affect soil fungal community structure, especially the enrichment of specific potentially beneficial fungal species. Our findings provide a scientific basis for understanding the dynamic changes of fungal communities and soil properties with continuous cropping obstacle of American ginseng in initial stage of soil improvement.

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Long-term effects of chloropicrin fumigation on soil microbe recovery and growth promotion of Panax notoginseng

Cited by 6 publications

References 57 publications

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

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

Effects of Soil Amendments on Soil Properties, Soil-Borne Pathogens, and Strawberry Growth after Dazomet Fumigation

Effects of rotation and Bacillus on the changes of continuous cropping soil fungal communities in American ginseng

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