Effects of precipitation change on soil microbial functional diversity in the primitive Korean pine and broadleaved forests

Nannan, 王楠楠 Wang; Dongxue, 韩冬雪 Han; Xue, 孙雪 Sun; Wei, 国微 Guo; Hongyu, 马宏宇 Ma; Fujuan, 冯富娟 Feng

doi:10.5846/stxb201509101873

Cited by 4 publications

(1 citation statement)

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“…Soil microbes are a highly sensitive and active component of terrestrial ecosystems, as they respond quickly to environmental changes, such as short-term N enrichment of terrestrial ecosystems, by driving changes in biomass activity and nutrient cycling, as well as changes in the soil microbial biomass, quantity, community structure, and diversity, as well as in soil enzyme activity [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Soil microbial community responses to short-term nitrogen addition in China’s Horqin Sandy Land

Niu

Duan

et al. 2021

PLoS ONE

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Anthropogenic nitrogen (N) addition has increased soil nutrient availability, thereby affecting ecosystem processes and functions in N-limited ecosystems. Long-term N addition decreases plant biodiversity, but the effects of short-term N addition on soil microbial community is poorly understood. The present study examined the impacts of short-term N addition (NH4NO3) on these factors in a sandy grassland and semi-fixed sandy land in the Horqin Sandy Land. We measured the responses of soil microbial biomass C and N; on soil β-1,4-glucosidase (BG) and β-1,4-N-acetylglucosaminidase (NAG) activity; and soil microflora characteristics to N additions gradient with 0 (control), 5 (N5), 10 (N10), and 15 (N15) g N m−2 yr−1. The soil microbial biomass indices, NAG activity, and soil microflora characteristics did not differ significantly among the N levels, and there was no difference at the two sites. The competition for N between plants and soil microbes was not eliminated by short-term N addition due to the low soil nutrient and moisture contents, and the relationships among the original soil microbes did not change. However, N addition increased BG activity in the N5 and N10 additions in the sandy grassland, and in the N5, N10, and N15 additions in the semi-fixed sandy land. This may be due to increased accumulation and fixation of plant litter into soils in response to N addition, leading to increased microbial demand for a C source and increased soil BG activity. Future research should explore the relationships between soil microbial community and N addition at the two sites.

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Section: Introductionmentioning

confidence: 99%

Soil microbial community responses to short-term nitrogen addition in China’s Horqin Sandy Land

Niu

Duan

et al. 2021

PLoS ONE

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The diversity and function of the in-situ fungal communities in response to polycyclic aromatic hydrocarbons in the urban wetland

Sun

Pan

et al. 2022

Arch Microbiol

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PAHs (Polycyclic Aromatic Hydrocarbons) increases the potential harm to ecosystem and human health.The fungi is considered as a powerful choice for degradation of PAHs. The researches on the effect of PAHs on fungal population in sediment/soil mostly stayed in the laboratory simulation that based on extreme pollution. This study investigated the fungal population of the urban wetland by high-throughput sequencing in situ micro-pollution state. Our statistical analysis revealed signi cant difference in the whole fungal population at the phylum among the three land use types. Among them, Ascomycota was the dominant fungi at the phyla in three land use types. Fungal genus of degrading PAHs were signi cantly correlated with Dibenz[a, h]anthracene (P = 0.018) in ditch wetland, Total Organic Carbon (P = 0.02) and Fluoranthene (P = 0.04) in riverine wetland, and Electrical Conductivity (P = 0.018) in agricultural land. PICRUSt (Phylogenetic Investigation of Communities by Reconstruction of Unobserved States) suggested that 20 enzymes were present related to PAHs metabolism in three land use types.Speci cally, monoxygenase, dehydrogenase, and laccase were most abundant among inferred enzymes, indicating that the urban wetland had potential for the degradation of PAHs. This study contributed to indepth understanding of the structure and function of fungal population and provided a theoretical basis for PAHs microbial remediation in the in-situ environment.

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Responses of soil bacterial communities to precipitation change in the semi-arid alpine grassland of Northern Tibet

Yan

Lü

et al. 2022

Front. Plant Sci.

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A change in precipitation can profoundly change the structure of soil microbial communities, especially in arid and semi-arid areas which are limited by moisture conditions. Therefore, it is crucial to explore how soil bacterial community composition and diversity will respond to variation in precipitation. Here we conducted a precipitation control experiment to simulate precipitation change by reducing and increasing rainfall by 25%, 50%, and 75% in the alpine grasslands of northern Tibet. The composition, diversity, and species interaction network of soil microbial community were studied by high-throughput sequencing, and the relationship between microbial community species and soil environmental factors was analyzed. Our results showed that Proteobacteria (45%–52%) and Actinobacteria (37%–45%) were the dominant bacteria in the soil. The alpha diversity index based on Shannon, Chao1, and Simpson indices revealed that precipitation change had no significant effect on richness and evenness of soil microbial communities. Non-metric multidimensional scaling (NMDS) and analysis of similarities (ANOSIM) showed that a clear separation of soil microbial communities between D2(-50%),D3(-75%) and W2(+50%), W3(+75%) treatments. The microbial interaction network indicated that the water-increasing treatment group had closer connections, and Proteobacteria and Actinomycetes were the core species. Furthermore, there was a stronger positive correlation between species in the water-reducing treatment group, the contribution of Proteobacteria decreased significantly, the role of connecting hub decreased, and Actinomycetes became the most important core microbial species. In addition, soil water content (SWC) and available phosphorus (AP) were closely related to the variations in soil microbial compositions. The findings of this study provide a theoretical basis for the driving mechanism of global climate change on soil microbial community and grassland ecosystem in alpine grassland.

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Effects of precipitation change on soil microbial functional diversity in the primitive Korean pine and broadleaved forests

Cited by 4 publications

References 0 publications

Soil microbial community responses to short-term nitrogen addition in China’s Horqin Sandy Land

Soil microbial community responses to short-term nitrogen addition in China’s Horqin Sandy Land

The diversity and function of the in-situ fungal communities in response to polycyclic aromatic hydrocarbons in the urban wetland

Responses of soil bacterial communities to precipitation change in the semi-arid alpine grassland of Northern Tibet

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