Effects of fumigation with 1,3-dichloropropene on soil enzyme activities and microbial communities in continuous-cropping soil

Zhang, Dianli; Ji, Xiaoxue; Meng, Zhen; Qi, Wenzhe; Qiao, Kang

doi:10.1016/j.ecoenv.2018.11.071

Cited by 36 publications

(17 citation statements)

References 46 publications

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“…This pattern may stem from the fact that fumigation can kill soil microorganisms to some extent, but as the bene cial microbes recover, so does enzyme activity. This is consistent with the results of Zhang et al (2019).…”

Section: Discussionsupporting

confidence: 93%

An emerging chemical fumigant: two-sided effects of dazomet on soil microbial environment and plant response

Chen

Jiang

et al. 2021

Environ Sci Pollut Res

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Methyl bromide has been banned worldwide because it causes damage to the ozone layer and the environment. To nd a substitute for methyl bromide, the relationships among fumigation, plant growth, and the microbial community in replant soil require further study. We performed pot and eld experiments to investigate the effects of dazomet fumigation on soil properties and plant performance. Changes in soil microbial community structure and diversity were assessed using high-throughput sequencing, and plant physiological performance and soil physicochemical properties were also measured. Dazomet fumigation enhanced photosynthesis and promoted plant growth in replant soil; it altered soil physical and chemical properties and reduced soil enzyme activities, although these parameters gradually recovered over time. After dazomet fumigation, the dominant soil phyla changed, microbial diversity decreased signi cantly, the relative abundance of biocontrol bacteria such as Mortierella increased, and the relative abundance of pathogenic bacteria such as Fusarium decreased. Over the course of the experiment, the soil microbial ora changed dynamically, and soil enzyme activities and other physical and chemical properties also recovered to a certain extent. This result suggested that the effect of dazomet on soil microorganisms was temporary. However, fumigation also led to an increase in some resistant pathogens, such as Trichosporon, that affect soil function and health. Therefore, it is necessary to consider potential negative impacts of dazomet on the soil environment and to perform active environmental risk management in China. HighlightsFumigation of apple replant soil with dazomet renewed the soil microbial environment, improved soil physical and chemical properties, and dynamically restored soil ecological function.The activities of several soil enzymes and the relative abundance of bene cial microorganisms increased after dazomet fumigation. These changes were accompanied by higher rates of apple photosynthesis and growth.Fumigation reduced the content of pathogenic fungi such as Fusarium and increased the abundance of bene cial bacteria in the soil. However, it also increased the abundance of pathogenic bacteria such as Trichosporon, indicating that it is important to perform active environmental risk management.

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Section: Discussionsupporting

confidence: 93%

An emerging chemical fumigant: two-sided effects of dazomet on soil microbial environment and plant response

Chen

Jiang

et al. 2021

Environ Sci Pollut Res

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“…Similarities in pH values after straw mulching are consistent with reports by Wang et al (2020). Unchanged soil total P and total K may be explained by the high levels of these elements in the soil (Dong et al, 2012;Zhang et al, 2016). The results of the present study showed that the soil's total organic C, total N, total P, inorganic N, available P, available K, DOC, DON, and water content decreased but pH increased with increasing soil depth, which was partly consistent with our hypothesis.…”

Section: Straw Mulching Changed Soil Physicochemical Properties With Soil Depthsupporting

confidence: 85%

Changes in soil physicochemical properties and bacterial communities at different soil depths after long-term straw mulching under a no-till system

Zhou

Chen

et al. 2021

SOIL

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Abstract. Conservation tillage has attracted increasing attention over recent decades, mainly due to its benefits for improving soil organic matter content and reducing soil erosion. However, the effects of long-term straw mulching under a no-till system on soil physicochemical properties and bacterial communities at different soil depths are still unclear. In this 12-year experiment of straw removal (CK) and straw mulching (SM) treatments, soil samples were collected at 0–5, 5–10, 10–20, and 20–30 cm soil depths. The results showed that the contents of organic carbon (C), nitrogen (N), and phosphorus (P) fractions, and bacterial abundance significantly decreased, whereas pH significantly increased with soil depth. Compared with CK, SM significantly increased total N, inorganic N, available P, available potassium, and soil water content at 0–5 cm, total organic C content at 0–10 cm, and dissolved organic C and N contents at 0–20 cm. Regarding bacterial communities, SM increased the relative abundances of Proteobacteria, Bacteroidetes, and Acidobacteria but reduced those of Actinobacteria, Chloroflexi, and Cyanobacteria. Bacterial Shannon diversity and Shannon's evenness at 0–5 cm were reduced by SM treatment compared to CK treatment. Furthermore, SM increased the relative abundances of some C-cycling genera (such as Terracidiphilus and Acidibacter) and N-cycling genera (such as Rhodanobacter, Rhizomicrobium, Dokdonella, Reyranella, and Luteimonas) at 0–5 cm. Principal coordinate analysis showed that the largest difference in the composition of soil bacterial communities between CK and SM occurred at 0–5 cm. Soil pH and N and organic C fractions were the major drivers shaping soil bacterial communities. Overall, SM treatment is highly recommended under a no-till system because of its benefits to soil fertility and bacterial abundance.

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“…The primers 515F (5΄-GTGCCAGCMGCCGCGG-3΄) and 907R (5΄-CCGTCAATTCMTTTRAGTTT-3΄) were used to amplify the V4-V5 regions of the bacterial DNA (Caporaso et al, 2012). Detailed operational information can be found in Zhang et al (2019). The 16S rRNA sequences were analyzed on the I-Sanger Cloud Platform (https://cloud.majorbio.com/).…”

Section: S Rrna Amplification For Illumina Sequencing and Data Processingmentioning

confidence: 99%

Changes in soil physicochemical properties and bacterial communities among different soil depths after long-term straw mulching under a no-till system

Zhou¹,

Li²,

Chen³

et al. 2021

Preprint

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Abstract. Conservation tillage has attracted increasing attention over recent decades, mainly due to its benefits in improving soil organic matter content and reducing soil erosion. Under intensive conventional tillage systems, some studies have focused on the responses of soil properties in the topsoil to straw retention. However, long-term straw mulching effects on soil physicochemical properties and bacterial communities among different soil depths under a no-till system are still obscure. One twelve-year experiment was conducted that included straw removal (CK) and straw mulching (SM) treatments. Soil samples were collected at 0–5, 5–10, 10–20, and 20–30 cm soil depths. Most soil physicochemical properties and the relative abundances of bacterial phyla were varied with soil depth. Compared with CK, SM increased soil total nitrogen and organic carbon, available phosphorus and potassium, dissolved organic carbon and nitrogen, and water content. SM increased soil bacterial abundance but reduced the Shannon diversity of the bacterial community at 0–5 cm depth. SM increased the relative abundances of Proteobacteria, Bacteroidetes, and Acidobacteria but reduced those of Actinobacteria, Chloroflexi, and Cyanobacteria. SM had different effects on the relative abundances of some C- and N-cycling genera, for instance, increasing Rhodanobacter, Rhizomicrobium, and Terracidiphilus, and reducing Anaeromyxobacter, Mycobacterium, and Syntrophobacter. A principal coordinate analysis indicated that SM largely affected soil bacterial communities at topsoil depth. Soil pH and different nitrogen and organic carbon fractions were the major drivers shaping soil bacterial community. Overall, straw mulch is highly recommended for use under a no-till system because of its benefits to soil fertility and bacterial abundance. However, inorganic nitrogen fertilizer levels may be reduced under straw mulching to maintain or increase soil bacterial Shannon diversity in future studies.

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Effects of fumigation with 1,3-dichloropropene on soil enzyme activities and microbial communities in continuous-cropping soil

Cited by 36 publications

References 46 publications

An emerging chemical fumigant: two-sided effects of dazomet on soil microbial environment and plant response

An emerging chemical fumigant: two-sided effects of dazomet on soil microbial environment and plant response

Changes in soil physicochemical properties and bacterial communities at different soil depths after long-term straw mulching under a no-till system

Changes in soil physicochemical properties and bacterial communities among different soil depths after long-term straw mulching under a no-till system

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