Effects of over 30-year of different fertilization regimes on fungal community compositions in the black soils of northeast China

Hu, Xiaojing; Liu, Junjie; Wei, Dan; Zhu, Ping; Cui, Xian; Zhou, Baoku; Chen, Xueli; Jin, Jian; Liu, Xiaobing; Wang, Guanghua

doi:10.1016/j.agee.2017.07.031

Cited by 96 publications

(52 citation statements)

References 75 publications

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“…In this study, the richness of pathogenic fungi was significantly increased following N enrichment (Fig. 4A), in support of our second hypothesis, and consistent with previous reports that application of inorganic fertilizer can increase the proportion of potential pathogenic fungi and may bring negative impacts on forest health (Paungfoo-Lonhienne et al, 2015;Hu et al, 2017). The richness and abundance of saprotrophic fungi (Fig.…”

Section: Response Of Different Functional Fungal Groups To N and Watesupporting

confidence: 92%

“…Latest research indicated that the relative abundance of Ascomycota responded positively to N addition (Zhou et al, 2016;She et al, 2018) and the proportion of saprotrophic fungi could also increase following N application due to increased resource (such as N and C) availability favoring fast-growing, copiotrophic fungi (Morrison et al, 2016). In addition, it was reported that application of inorganic fertilizer (N, P and K) increased the relative abundance of potentially pathogenic fungi (Hu et al, 2017;Wang et al, 2018a). By contrast, the richness and abundance of mycorrhizal fungi would decrease following high dose N input owing to the decline of dependence of plant on them under increased N availability, soil acidification and changes in aboveground plant community (Rousk et al, 2010;Huang et al, 2014;Chen et al, 2017;Barnes et al, 2018).…”

Section: © Higher Education Press 2020 1 Introductionmentioning

confidence: 99%

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Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

et al. 2020

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Nitrogen (N) deposition and intensified rainfall can strongly affect soil microbial community, but compared with available studies on bacteria, those on soil fungi are quite limited. Here we carried out a field experiment in a mixed deciduous forest of China to study the influences of increased N deposition and rainfall on soil fungi by using quantitative PCR and high-throughput sequencing method. The results demonstrated that (1) N addition significantly increased fungal abundance and alpha diversity (richness, Shannon index and Invsimpson index), changed fungal community composition at OTU level, and marginally increased the relative abundance of Ascomycota and Zygomycota, while water addition showed no remarkable effects on fungal abundance, biodiversity and community composition. (2) N addition significantly increased the richness of saprotrophic fungi and pathogenic fungi, and the relative abundance of saprotrophic fungi, but water addition only slightly increased the abundance of pathogenic fungi. (3) Fungal composition dissimilarity closely correlated with the disparity of soil parameters as a whole. Soil NH 4 + -N exhibited strong positive correlation with the richness of pathogenic fungi and mycorrhizal fungi, while both soil moisture and NH 4 + -Ntightly correlated with soil fungal abundance and alpha diversity indices. We concluded that in this N-limited but non-water-limited forest ecosystem, N deposition posed stronger effects on soil fungi than increased rainfall, partially mediated by changes in soil properties.

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Section: Response Of Different Functional Fungal Groups To N and Watesupporting

confidence: 92%

Section: © Higher Education Press 2020 1 Introductionmentioning

confidence: 99%

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

et al. 2020

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“…By changing the community structure of the soil, different tillage methods may result in different changes in soil biological richness and evenness [11,13]. The land consolidation of dryland-to-paddy conversion affects the soil environmental factors and the quality of the soil matrix, which eventually affects the diversity and functioning of the soil microbial community [25][26][27]. The large-scale conversion of dryland to paddy would inevitably alter the local soil environment or even a large area of agricultural land, and affect the physicochemical properties and biological processes of the soil [11][12][13], thus directly or indirectly affecting the agroecosystem carbonitride cycle and the emissions of greenhouse gases such as CO 2 , CH 4 , and N 2 O [17].…”

Section: Introductionmentioning

confidence: 99%

Short-Term Response of Soil Microbial Community to Field Conversion from Dryland to Paddy under the Land Consolidation Process in North China

Yang

et al. 2019

Agriculture

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Land consolidation of dryland-to-paddy conversion for improving tillage conditions and grain production capacity is widely implemented throughout the world. The conversion affects soil ecological stability, especially the most active soil microorganisms. However, the impacts of the dryland-to-paddy conversion has paid little attention in recent decades. In this study, a pot experiment was used to explore the responses of the microbial community and their interactions with soil properties after rice in the first season (five months). The results indicated that a significant decrease in the topsoil pH, organic matter content, nitrate nitrogen, and ammonical nitrogen, and an increase in soil electrical conductivity (EC) was observed (p < 0.05) after the dryland-to-paddy conversion. The richness and diversity of bacteria and fungi decreased in the short term. The composition of the soil microbial community and the soil microbial dominant bacteria had considerably changed after the conversion. Actinobacteria, Firmicutes, and Olpidiomycota were found to be highly sensitive to the dryland-to-paddy conversion. The soil microbial community structure had extremely significant positive correlations with soil pH, EC, organic matter, nitrate nitrogen, and ammonical nitrogen (p < 0.05). Microorganisms are the most important component of soil nutrient cycling. Converting a large area of dryland to paddy may lead to an imbalance in the soil carbonitride cycle and should be further examined in North China.

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“…Basidiomycota mostly grows in rotten wood, compost and other humid environments [66][67][68], and the abundance of Basidiomycota was increased from 7.93% in dry land to 22.91% (dominant) in paddy field. Most studies found that fungal community structures were usually closely related to soil nutrient contents [67][68][69]. In the present study, compared to dry land, paddy field was flooded for a long period, and most of the voids in soil were occupied by water, resulting in a low oxygen content and weak redox property of the soil [25,70].…”

Section: Changes In Microbial Community Structure After Dryland-to-pamentioning

confidence: 60%

Flooding Irrigation Weakens the Molecular Ecological Network Complexity of Soil Microbes during the Process of Dryland-to-Paddy Conversion

Zhang

et al. 2020

IJERPH

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Irrigation has been applied on a large scale for the improvement of grain yield per hectare and production stability. However, the dryland-to-paddy conversion affects the ecological environment of areas of long-term dry farming, especially soil microorganisms. Little attention has been paid to the changes in microbial communities and the interactions between their populations in this process. Therefore, in this paper, the compositions and diversity of soil bacterial and fungal communities were explored through a combination of high-throughput sequencing technology and molecular ecological network methods using bacterial 16S rRNA and fungal ITS. The results showed that: (1) both the abundance and diversity of soil bacteria and fungi decreased in a short time, and the abundance of Actinobacteria, Firmicutes and Olpidiomycota varied greatly. (2) Compared to dry land, the modular structure of interaction networks and interspecific relationships of bacterial and fungal communities in paddy soil were simpler, and the network became more unstable. A cooperative relationship dominated in the molecular ecological network of bacteria, while a competitive relationship was dominant in the network of fungi. Actinobacteria and Firmicutes were the dominant bacterial species in dry land and paddy field, respectively. Ascomycota was dominant in the fungal communities of both dry land and paddy field. (3) The change in soil environmental factors, such as pH, electrical conductivity (EC), organic matter (OM) and available potassium (AK), directly affected the soil microbial community structure, showing a significant correlation (p < 0.05). These environmental factors also influenced the dominant microbial species. Microorganisms are the most important link in the carbon and nitrogen cycles of soil, and a large-scale dryland-to-paddy conversion may reduce the ecological stability of regional soil.

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Effects of over 30-year of different fertilization regimes on fungal community compositions in the black soils of northeast China

Cited by 96 publications

References 75 publications

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

Soil fungal community is more sensitive to nitrogen deposition than increased rainfall in a mixed deciduous forest of China

Short-Term Response of Soil Microbial Community to Field Conversion from Dryland to Paddy under the Land Consolidation Process in North China

Flooding Irrigation Weakens the Molecular Ecological Network Complexity of Soil Microbes during the Process of Dryland-to-Paddy Conversion

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