Nitrogen deposition combined with elevated precipitation is conducive to maintaining the stability of the soil fungal diversity on the Stipa baicalensis steppe

Zhang, Haifang; Wang, Lili; Liu, Hongmei; Zhao, Junjie; Li, Gang; Wang, Hui; Lai, Xin; Li, Jie; Xiu, Weiming; Dian-lin, Yang

doi:10.1016/j.soilbio.2017.11.004

Cited by 26 publications

(15 citation statements)

References 28 publications

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“…Several studies have shown that both nitrogen addition and precipitation changes have significant impacts on the relative abundance and diversity of soil fungi (Leff et al, 2015;Chen et al, 2017;Zhang et al, 2018). Here, experimental results also indicated that the relative abundances of soil fungal taxa were altered significantly under nitrogen addition and precipitation alteration (Figure 2 and Supplementary Table S1), suggesting that shifts in both nitrogen and precipitation may influence the ecological functions of soil fungal taxa in the alpine steppe ecosystem.…”

Section: Effects Of Nitrogen Addition and Precipitation Changes On Resupporting

confidence: 69%

“…However, significant negative effects of nitrogen addition combined with precipitation reduction on OTU richness and Chao 1 index were detected ( Figures 4A,B), suggesting that drought reinforces the negative effect of nitrogen addition on soil microbial diversity in the alpine steppe ecosystem. A previous study showed that nitrogen addition combined with elevated precipitation is beneficial for maintaining soil fungal diversity in the Stipa baicalensis temperate steppe (Zhang et al, 2018). Based on these observations, we speculated that, in the alpine steppe, drought had a stronger negative effect on microbial diversity than that of nitrogen addition.…”

Section: Explanatory Factormentioning

confidence: 74%

“… Wang et al (2018) found that precipitation was a main driver for the distribution pattern and community structure of a soil fungal community at a temperate steppe in Inner Mongolia of China. Additionally, the negative effects of nitrogen deposition on biodiversity may be changed by the effects of elevated precipitation ( Zhang et al, 2018 ). Precipitation has been occurring with an increasing trend gradually on the QTP ( Yang, 2018 ), which might alleviate environmental drought pressure and then might benefit soil fungal diversity and community composition.…”

Section: Introductionmentioning

confidence: 99%

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Soil Fungal Community Composition, Not Assembly Process, Was Altered by Nitrogen Addition and Precipitation Changes at an Alpine Steppe

Xiao

Yang

et al. 2020

Front. Microbiol.

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Global climate change and nitrogen deposition have been having broad impacts on microorganisms. On the Qinghai-Tibetan Plateau (QTP), the responses of soil microbial community assemblage and diversity to nitrogen deposition and changes in precipitation are poorly understood, especially in the alpine steppe. In this study, we conducted a field manipulative experiment of nitrogen deposition and precipitation amount in an alpine steppe on the northeastern QTP and investigated the responses of community composition, diversity, and community assemblage of soil fungi. Soil fungal community compositions were significantly altered under nitrogen addition, precipitation change, and their interaction, and positively related with soil moisture, soil pH, and plant species richness. However, they were negatively related to soil mineralizable N and soil available P content. Operational taxonomic units (OTU) richness and Chao 1 index decreased under nitrogen addition combined with precipitation reduction treatment, whereas the Shannon-Wiener index declined only under precipitation increment treatment. Convergent fungal community assembly processes were not acutely altered by both nitrogen addition and precipitation changes, indicating that environmental filtering was a dominant ecological process controlling fungal community assemblage. By elucidating the above questions, the study enhanced our ability to predict the responses of soil fungal communities to nitrogen deposition and precipitation changes at alpine steppes on the QTP in the future.

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Section: Effects Of Nitrogen Addition and Precipitation Changes On Resupporting

confidence: 69%

Section: Explanatory Factormentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil Fungal Community Composition, Not Assembly Process, Was Altered by Nitrogen Addition and Precipitation Changes at an Alpine Steppe

Xiao

Yang

et al. 2020

Front. Microbiol.

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“…Soil parameters that can be drastically affected by C and N supply to the soil play a vital role in determining soil bacterial diversity in global terrestrial ecosystems [ 66 , 67 ]. Previous studies have shown that soil pH is a major factor influencing microbial diversity in ecosystems [ 35 , 42 , 68 , 69 ]. However, in the present study, DOC exerted the strongest effect on soil bacterial and fungal diversity ( Fig 2 ), and AN significantly affected soil fungal diversity.…”

Section: Discussionmentioning

confidence: 99%

Nutrient availability is a dominant predictor of soil bacterial and fungal community composition after nitrogen addition in subtropical acidic forests

et al. 2021

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Nutrient addition to forest ecosystems significantly influences belowground microbial diversity, community structure, and ecosystem functioning. Nitrogen (N) addition in forests is common in China, especially in the southeast region. However, the influence of N addition on belowground soil microbial community diversity in subtropical forests remains unclear. In May 2018, we randomly selected 12 experimental plots in a Pinus taiwanensis forest within the Daiyun Mountain Nature Reserve, Fujian Province, China, and subjected them to N addition treatments for one year. We investigated the responses of the soil microbial communities and identified the major elements that influenced microbial community composition in the experimental plots. The present study included three N treatments, i.e., the control (CT), low N addition (LN, 40 kg N ha-1 yr-1), and high N addition (HN, 80 kg N ha-1 yr-1), and two depths, 0−10 cm (topsoil) and 10−20 cm (subsoil), which were all sampled in the growing season (May) of 2019. Soil microbial diversity and community composition in the topsoil and subsoil were investigated using high-throughput sequencing of bacterial 16S rDNA genes and fungal internal transcribed spacer sequences. According to our results, 1) soil dissolved organic carbon (DOC) significantly decreased after HN addition, and available nitrogen (AN) significantly declined after LN addition, 2) bacterial α-diversity in the subsoil significantly decreased with HN addition, which was affected significantly by the interaction between N addition and soil layer, and 3) soil DOC, rather than pH, was the dominant environmental factor influencing soil bacterial community composition, while AN and MBN were the best predictors of soil fungal community structure dynamics. Moreover, N addition influence both diversity and community composition of soil bacteria more than those of fungi in the subtropical forests. The results of the present study provide further evidence to support shifts in soil microbial community structure in acidic subtropical forests in response to increasing N deposition.

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“…For the impacts of elevated rainfall on soil fungal community composition, different studies also failed to reach a general conclusion (Hawkes et al, 2011;She et al, 2018). Moreover, increased rainfall could weaken the effects of N deposition on fungal alpha diversity (Zhang et al, 2018a), but no significant interactive impacts of N and water on fungal alpha diversity and community composition were detected in She et al (2018).…”

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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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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Nitrogen deposition combined with elevated precipitation is conducive to maintaining the stability of the soil fungal diversity on the Stipa baicalensis steppe

Cited by 26 publications

References 28 publications

Soil Fungal Community Composition, Not Assembly Process, Was Altered by Nitrogen Addition and Precipitation Changes at an Alpine Steppe

Soil Fungal Community Composition, Not Assembly Process, Was Altered by Nitrogen Addition and Precipitation Changes at an Alpine Steppe

Nutrient availability is a dominant predictor of soil bacterial and fungal community composition after nitrogen addition in subtropical acidic forests

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

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