The shifts of maize soil microbial community and networks are related to soil properties under different organic fertilizers

Rhizosphere ◽  
2021 ◽  
pp. 100388
Author(s):  
Lidong Ji ◽  
Haili Si ◽  
Jinqin He ◽  
Liqin Fan ◽  
Lei Li
Keyword(s):  
Microbial Community ◽  
Soil Properties ◽  
Soil Microbial Community ◽  
Organic Fertilizers ◽  
Soil Microbial

Impacts of heavy metals and soil properties at a Nigerian e-waste site on soil microbial community

2019 ◽  
Vol 362 ◽  
pp. 187-195 ◽  
Author(s):  
Bo Jiang ◽  
Adedoyin Adebayo ◽  
Jianli Jia ◽  
Yi Xing ◽  
Songqiang Deng ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Microbial Community ◽  
Soil Properties ◽  
Soil Microbial Community ◽  
Waste Site ◽  
Soil Microbial

scholarly journals Comparison of the effects of three fungicides on clubroot disease of tumorous stem mustard and soil bacterial community

2021 ◽  
Author(s):  
Jingjing Liao ◽  
Luyun Luo ◽  
Li Zhang ◽  
Lingzhi Wang ◽  
Xuedan Shi ◽  
...  
Keyword(s):  
Microbial Community ◽  
Bacterial Community ◽  
Soil Properties ◽  
Soil Microbial Community ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Post Inoculation ◽  
Clubroot Disease ◽  
Soil Microbial ◽  
Α Diversity

Abstract Purpose The application of fungicides is one of the main strategies to prevent clubroot disease. Currently, numerous studies focus on changes in the soil microbial community at different levels of clubroot disease severity. However, the effects of fungicides on the soil microbial community and causative pathogen, Plasmodiophora brassicae, while preventing clubroot disease remain unclear. Methods In this study, we evaluated the control efficacy of three fungicides (fluazinam, metalaxyl-mancozeb, and carbendazim) on clubroot disease of tumorous stem mustard in greenhouse experiment. Uninoculated and Water treatments after inoculation were performed as controls. At three (3 W) and six weeks (6 W) post-inoculation of P. brassicae, soil properties, bacterial composition (sequencing of 16S rRNA genes), and effector gene expression of the pathogen were analyzed. The correlation of these factors with disease index (DI) was explored. Results Fluazinam was the most effective in controlling clubroot disease of tumorous stem mustard with a controlled efficacy of 59.81%, and the abundance of P. brassicae in the soil decreased 21.29% after 3 weeks of treatment. Compared with other treatments, twelve out of twenty effector genes showed higher expression in fluazinam 3 W samples. Different fungicides had different effects on soil properties. EC (electrical conductivity), the main factor that positively associated with DI, was significantly lower in fluazinam treatment than the other two fungicide treatments. The application of fungicides, especially carbendazim, significantly reduced bacterial α-diversity and the composition of soil bacteria. Pseudomonas, Microbacterium, and Sphingobacterium (positively correlated with DI) were enriched in Water, metalaxyl-mancozeb, and carbendazim treatments, but were less abundant in fluazinam treatment. Among the three fungicide treatments, DI was significantly negatively correlated with Shannon and Chao 1 indices. Soil properties and the top bacterial genera that positively correlated with DI were influenced to a lesser degree in the fluazinam treatment. Conclusion Among three fungicides, fluazinam was the most effective agent with the highest control effects against clubroot disease. The strong virulence of fluazinam against P. brassicae was one of the main reasons for the prevention of clubroot disease, and in addition the alteration of rhizosphere bacterial community by fluazinam to the detriment of P. brassicae infection. Based on our results, EC could be an indicator of the severity of clubroot disease.

scholarly journals Responses of Soil Microbial Traits to Ground Cover in Citrus Orchards in Central China

2021 ◽  
Vol 9 (12) ◽  
pp. 2507
Author(s):  
Yupeng Wu ◽  
Xue Wang ◽  
Ronggui Hu ◽  
Jinsong Zhao ◽  
Yanbin Jiang
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Soil Properties ◽  
Microbial Community Structure ◽  
Soil Microbial Community ◽  
Positive Relationship ◽  
Ground Cover ◽  
Fungal Communities ◽  
Soil Microbial Community Structure ◽  
Soil Microbial

A clear understanding of which factors play an important role in the development of the soil microbial community in orchards will benefit our understanding of ground cover impacts on soil nutrient cycling. Thus, in the present study, grass properties, soil properties, and soil microbial community structure were determined in a citrus orchard after 5 years of management with different types of ground cover (NG: natural grass, LP: monoculture of legumes, and NL: mixed culture of natural grasses and legumes) to evaluate how ground cover biomass and nitrogen-fixing ability drive soil physicochemical and microbial traits. Plant biomass carbon (BC) and nitrogen (BN) were significantly higher in LP and NL than NG and showed a significant (p < 0.01) positive relationship with soil total carbon (TC), NO3−-N (NN), and dissolved organic carbon (DOC) content. In addition, the amount of biologically fixed nitrogen (FixN) showed a significant positive relationship with soil total nitrogen (TN) (p < 0.05) and NH4+-N (AN) content (p < 0.01). We also observed a difference in the soil microbial community structure between plots with and without legumes. The TC and BN were the most influential factors driving bacterial and fungal communities, respectively. Nevertheless, FixN explained less than 9% of the differences in soil bacterial and fungal communities. Our results suggest that grass biomass and FixN are the strong drivers of soil chemical properties, whereas ground cover and soil properties both contribute significantly to the soil microbial community structure.

scholarly journals Effects of Soil Properties and Plant Diversity on Soil Microbial Community Composition and Diversity during Secondary Succession

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 805
Author(s):  
Ruiguang Shang ◽  
Shuaifeng Li ◽  
Xiaobo Huang ◽  
Wande Liu ◽  
Xuedong Lang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Soil Properties ◽  
Community Composition ◽  
Plant Diversity ◽  
Soil Microbial Community ◽  
Secondary Succession ◽  
Community Diversity ◽  
Fungal Communities ◽  
Coniferous Forests ◽  
Soil Microbial

Soil microbial communities play an important role in maintaining the ecosystem during forest secondary succession. However, the underlying mechanisms that drive change in soil microbial community structures during secondary succession remain poorly defined in species-rich subtropical coniferous forests. In this study, Illumina high-throughput sequencing was used to analyze the variations in soil microbial community structures during forest secondary succession in subtropical coniferous forests in China. The role of soil properties and plant diversity in affecting soil bacterial and fungal communities was determined using random forest and structural equation models. Highly variable soil microbial diversity was observed in different stages of secondary succession. Bacterial community diversity rose from early to middle and late successional stages, whereas fungal community diversity increased from early to middle successional stages and then declined in the late stage. The relative abundance of Acidobacteria, Gemmatimonadetes, Eremiobacterota(WPS-2), Rokubacteria, and Mortierellomycota increased during succession, whereas the relative abundance of Ascomycota and Mucoromycota decreased. The community composition and diversity of the soil microbial community were remarkably influenced by plant diversity and soil properties. Notably, tree species richness (TSR) displayed a significant and direct correlation to the composition and diversity of both bacterial and fungal communities. The carbon-to-nitrogen (C:N) ratio had a direct impact on the bacterial community composition and diversity, and pH had a marked impact on the fungal community composition and diversity. Furthermore, succession stage and plant diversity indirectly impacted the composition and diversity of soil bacterial and fungal communities via soil properties. Overall, it can be concluded that soil intrinsic properties and plant diversity might jointly drive the changes in soil microbial community composition and diversity during secondary succession of subtropical coniferous forests.

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