Soil Bacterial and Fungal Community Responses to Throughfall Reduction in a Eucalyptus Plantation in Southern China

Lin, Yubiao; Kong, Jiejun; Yang, Ling; Qian, He; Shi, Yan; Li, Jiyue; Wang, Guangyu; Qiu, Qing

doi:10.3390/f13010037

Cited by 10 publications

(11 citation statements)

References 53 publications

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“…We further discovered that the major functional genes were all metabolism-related functions. This result was in line with the reports of Lin et al (2022), who found that metabolism played an extremely pivotal role in the soil of Eucalyptus plantations. Furthermore, no significant differences were found in bacterial functional groups between the topsoil and subsoil (Supplementary Tables S2, S3), indicating that soil depth might not be the main factor affecting bacterial function.…”

Section: Effects Of Fertilization On the Function Of Soil Microbial C...supporting

confidence: 93%

“…These results believed that long-term fertilization reduced bacterial species and richness via aggravating soil acidification (Curtin et al, 1998;Yao et al, 2014;Chen et al, 2015). We also found that bacterial diversity gradually decreased with the deepening of the soil layer, which was consistent with previous studies that showed lower bacterial diversity in the subsoil of the Eucalyptus plantation than in the topsoil (Lin et al, 2022). The reason for this result might be due to less accumulation of elemental contents (e.g., N and P) in the deeper soil (Wang et al, 2017).…”

Section: Effects Of Fertilization On the Diversity And Composition Of...supporting

confidence: 92%

“…However, these results only explored the effects of N and P additions on microbial populations, and how soil microbes ultimately respond to N, P, and K coupled fertilization remained poorly understood. Furthermore, the changes in microbial abundance and community composition with soil properties are bound to be affected by the vertical distribution of soil profiles (Lin et al, 2022). However, most studies focus on the effect of fertilization on the microbial community of the surface soil (e.g., 0-20 cm; Griffiths et al, 2012;Fierer et al, 2012a;Zhou et al, 2015), and the responses of the longitudinal variation of soil and microbial properties to soil depth undergoing fertilization are relatively rare reported.…”

Section: Introductionmentioning

confidence: 99%

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Soil microbial communities response to different fertilization regimes in young Catalpa bungei plantation

et al. 2022

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Fertilization is a fundamental aspect of global forest management that enhances forest productivity and drastically affects soil microbial communities. However, few studies have investigated the differences and similarities in the responses of below-ground microbial communities to different fertilization schemes. The effects of fertilization regimes on the composition and diversity of soil fungal and bacterial communities were investigated in a young Catalpa bungei plantation in Shandong Province, Eastern China. Soil microbial communities were assessed undergoing three types of fertilization: (i) no fertilization (CK), (ii) hole fertilization (HF), and (iii) the integration of water and fertilizer (WF). We further analyzed the effects of soil depth (i.e., 0–20 and 20–40 cm) on the structure of soil microbial communities. Our results indicated that the diversity of bacteria (e.g., Chao1 and Shannon indices) reduced undergoing fertilization, and WF had a higher negative impact on bacterial diversity than HF. A lower bacterial diversity was observed in the subsoil compared to the topsoil. In contrast to bacterial diversity, fungal diversity had a slightly increasing trend in the fertilized environments. The primary bacterial function was metabolism, which was independent of fertilization or soil depth. Among fungal functional guilds, symbiotic soil fungi decreased obviously in the fertilized stand, whereas saprotrophic fungi increased slowly. According to the structural equation models (SEM), the diversity and composition of bacterial and fungal communities were jointly regulated by soil nutrients (including N and P contents) directly affected by fertilization and soil layer. These findings could be used to develop management practices in temperate forests and help sustain soil microbial diversity to maintain long-term ecosystem function and services.

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Section: Effects Of Fertilization On the Function Of Soil Microbial C...supporting

confidence: 93%

Section: Effects Of Fertilization On the Diversity And Composition Of...supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Soil microbial communities response to different fertilization regimes in young Catalpa bungei plantation

et al. 2022

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“…Furthermore, the activity and growth of plants and soil microbes are affected by water availability (Engelhardt et al, 2021). Congruent with previous reports (Zhao et al, 2017;Su et al, 2020;Lin et al, 2022), this study showed that TR significantly reduced SWC in the rainy season. For other soil physicochemical properties, their contents were almost all reduced in the rainy season relative to those in the dry season.…”

Section: Discussionsupporting

confidence: 81%

Seasonal variations of soil bacterial and fungal communities in a subtropical Eucalyptus plantation and their responses to throughfall reduction

et al. 2023

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Climatic change causes obvious seasonal meteorological drought in southern China, yet there is a lack of comprehensive in situ studies on the effects of drought in Eucalyptus plantations. Here, a 50% throughfall reduction (TR) experiment was conducted to investigate the seasonal variations of soil bacterial and fungal communities and functions in a subtropical Eucalyptus plantation and their responses to TR treatment. Soil samples were collected from control (CK) and TR plots in the dry and rainy seasons and were subjected to high-throughput sequencing analysis. Results showed that TR treatment significantly reduced soil water content (SWC) in the rainy season. In CK and TR treatments, fungal alpha-diversity decreased in the rainy season while bacterial alpha-diversity did not change significantly between dry and rainy seasons. Moreover, bacterial networks were more affected by seasonal variations compared with fungal networks. Redundancy analysis showed that alkali hydrolyzed nitrogen and SWC contributed the most to the bacterial and fungal communities, respectively. Functional prediction indicated that the expression of soil bacterial metabolic functions and symbiotic fungi decreased in the rainy season. In conclusion, seasonal variations have a stronger effect on soil microbial community composition, diversity, and function compared with TR treatment. These findings could be used to develop management practices for subtropical Eucalyptus plantations and help maintain soil microbial diversity to sustain long-term ecosystem function and services in response to future changes in precipitation patterns.

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“…The RDA and mental test results showed that soil and plant properties were significantly associated with bacterial and fungal communities of the five karst tiankengs ( Figure 6 ; Supplementary Table 1 ). SWC has been widely demonstrated to construct soil bacterial and fungal communities ( Kaisermann et al, 2015 ; Long et al, 2021 ; Lin et al, 2022 ). Soil moisture content can directly affect the survival activity of microbes, and affect microbial growth by indirectly regulating the distribution of soil nutrients ( Clark et al, 2009 ; Manzoni et al, 2014 ).…”

Section: Discussionmentioning

confidence: 99%

The characterization of microbial communities and associations in karst tiankeng

Jiang

Liu

et al. 2022

Front. Microbiol.

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The karst tiankeng is a special and grand negative terrain on the surface, that maintains a unique ecosystem. However, knowledge about bacterial and fungal communities in karst tiankengs is still limited. Therefore, soil samples from five karst tiankengs were collected and subjected to high-throughput sequencing of 16S rRNA and ITS genes, and multivariate statistical analysis. The results showed abundant and diversified bacterial and fungal communities in karst tiankeng. The bacterial communities were dominated by Proteobacteria and Acidobacteria, and the fungal communities were dominated by Ascomycota and Basidiomycota. Statistical analysis revealed significant differences in bacterial and fungal communities among the five karst tiankengs, which may indicate that the distribution of bacterial and fungal communities was driven by separate karst tiankengs. The co-occurrence network structure was characterized by highly modularized assembly patterns and more positive interactions. The keystone taxa were mainly involved in nutrient cycling and energy metabolism. The null model analysis results showed that the stochastic process, especially dispersal limitation, tended to be more important in controlling the development of bacterial and fungal communities in karst tiankeng. The bacterial community structure was significantly associated with soil properties (SWC, TN, AN, and BD), while the fungal community structure was significantly associated with soil properties (SWC and TP) and plant diversity. These results can expand our knowledge of the karst tiankeng microbiome.

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Soil Bacterial and Fungal Community Responses to Throughfall Reduction in a Eucalyptus Plantation in Southern China

Cited by 10 publications

References 53 publications

Soil microbial communities response to different fertilization regimes in young Catalpa bungei plantation

Soil microbial communities response to different fertilization regimes in young Catalpa bungei plantation

Seasonal variations of soil bacterial and fungal communities in a subtropical Eucalyptus plantation and their responses to throughfall reduction

The characterization of microbial communities and associations in karst tiankeng

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