Fungal communities are more sensitive to nitrogen fertilization than bacteria in different spatial structures of silage maize under short-term nitrogen fertilization

Bai, Lanfang; Zhang, Xiangqian; Li, Bingzhen; Sun, Fengcheng; Zhao, Xiaoqing; Wang, Yufen; Lu, Zhanyuan; Zhang, Dejian; Fang, Jing

doi:10.1016/j.apsoil.2021.104275

Cited by 24 publications

(24 citation statements)

References 51 publications

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“…Our results further indicate that the specific microbial communities create different compartment niches in different spatial structures of the root system. 12,29 Input mineral N is too high, and the bacterial diversity decreases. 6 We showed that the bacterial α-diversity was highest in the N360 treatment and fungal α-diversity was lowest in the bulk soil and rhizosphere soil, which was different from previous studies.…”

Section: Discussionmentioning

confidence: 99%

“…Endophyte entry into plants occurs naturally, mainly through wounds. The wound can provide access to microorganisms and access for leakage of plant exudates, creating favorable nutritional conditions for microorganisms. , As a biocontrol agent, endophytic microbes can increase the soil nitrogen content and crop yield through nitrogen fixation and stimulation of plant hormones . Therefore, endophytic microbes can reduce microbial competition for N by increasing the rhizosphere N content .…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, endophytic microbes can reduce microbial competition for N by increasing the rhizosphere N content . The dominant taxa play a key role in microbiome assembly. , The abundance of Proteobacteria and Actinobacteria decreased with decreasing to the plant. The abundance of Proteobacteria increases in nutrient-rich soil environments and play a key role in nutrient cycling .…”

Section: Discussionmentioning

confidence: 99%

“…As an indicator to evaluate soil biological quality and health, microbial community structure is affected by a variety of biotic and abiotic factors . Fertilization alters plant dependence on increasing resources by increasing soil nutrients. , It has been shown that, with the increasing N-application rate, the abundance of bulk soil microbial diversity decreased and the rhizosphere bacteria diversity increased, and microbial diversity and beneficial function microorganisms reduced under higher N rates. , Long-term excess chemical fertilizer input is unsustainable . In the long term, repeated fertilization may cause some microorganisms to proliferate and others to become suppressed.…”

Section: Introductionmentioning

confidence: 99%

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Changes in the Microbial Community in Maize (Zea mays L.) Root Spatial Structure Following Short-Term Nitrogen Application

Bai

Wang

et al. 2022

ACS Omega

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The beneficial interactions between crop roots and microbiomes play a key role in crop nutrient availability, growth promotion, and disease suppression. Recent research, however, rarely reported the effects of nitrogen (N) application rate on microbial community composition at different spatial structures in the maize root zone. Therefore, one experiment was conducted to examine the influence of three N-application levels (0, 180, and 360 kg N ha −1 ) on microbial community composition in three root-associated compartments of maize (bulk soil, rhizoplane, and endosphere). The microbial diversity and community composition differed significantly among the various compartments. The effects of N application on fungal composition decreased in the order bulk soil > rhizosphere > endosphere at different sampling positions. Also, the fungal composition was more sensitive to the N-fertilizer rate in the bulk soil and the rhizosphere than the bacterial community. A total of 14.42, 9.46, and 3.55% of all taxonomic groups were sensitive to N fertilizer, respectively. The keystone species fungal groups were Humicola (bulk soil), Gibberella (rhizosphere soil), and Humicola (endosphere). Together, our results demonstrate that compared with that of the bacterial community, the fungal community composition was more susceptible to different N-application rates. N fertilization affected the distribution of microflora by changing soil physicochemical properties and enzyme activities. There were strong correlations between microbial communities in maize under the N180 treatment. Moreover, the N180 treatment had the maximum fresh yield and biomass at 64.5 and 24.3 kg•ha −1 , respectively.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Changes in the Microbial Community in Maize (Zea mays L.) Root Spatial Structure Following Short-Term Nitrogen Application

Bai

Wang

et al. 2022

ACS Omega

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“…In this line, our results showed that N fertilization merely affected bacterial community composition and structure, which agrees with insignificant changes found with a meta-analysis on agricultural systems (Geisseler and Scow, 2014) and several other studies where minimal effect was found of mineral fertilizers on soil bacteria community assembly in the very short term (few weeks from their applications; Marschner et al, 2001;Stark et al, 2007;She et al, 2018) or even long term (Liu and Ludewig, 2019). Moreover, a very recent work highlighted that short-term nitrogen fertilization had a greater impact on fungal community composition and structure than on bacterial communities in different compartments along the soil-root continuum (bulk soil, rhizosphere, and endophytic environment) of maize (Bai et al, 2022). Our results supported these observations, as we found that the fungal community was highly responsive to N fertilization, which partially validated our hypotheses.…”

Section: Ammonium Fertilization Promoted Ggt Root Infestation and The...mentioning

confidence: 91%

Ammonium fertilization increases the susceptibility to fungal leaf and root pathogens in winter wheat

et al. 2022

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Nitrogen (N) fertilization is indispensable for high yields in agriculture due to its central role in plant growth and fitness. Different N forms affect plant defense against foliar pathogens and may alter soil–plant-microbe interactions. To date, however, the complex relationships between N forms and host defense are poorly understood. For this purpose, nitrate, ammonium, and cyanamide were compared in greenhouse pot trials with the aim to suppress two important fungal wheat pathogens Blumeria graminis f. sp. tritici (Bgt) and Gaeumannomyces graminis f. sp. tritici (Ggt). Wheat inoculated with the foliar pathogen Bgt was comparatively up to 80% less infested when fertilized with nitrate or cyanamide than with ammonium. Likewise, soil inoculation with the fungal pathogen Ggt revealed a 38% higher percentage of take-all infected roots in ammonium-fertilized plants. The bacterial rhizosphere microbiome was little affected by the N form, whereas the fungal community composition and structure were shaped by the different N fertilization, as revealed from metabarcoding data. Importantly, we observed a higher abundance of fungal pathogenic taxa in the ammonium-fertilized treatment compared to the other N treatments. Taken together, our findings demonstrated the critical role of fertilized N forms for host–pathogen interactions and wheat rhizosphere microbiome assemblage, which are relevant for plant fitness and performance.

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Effects of Different Wheat Varieties on Soil Bacterial and Fungal Communities

Zhang,

Li,

Cai

et al. 2024

Land Degrad Dev

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The diversity and stability of soil microbial communities are indispensable components for maintaining the functions and services of agricultural ecosystems and play crucial roles in wheat production. However, the effects of different wheat varieties on soil microbial diversity, network complexity, stability, and assembly mechanisms remain largely unexplored. To bridge this research gap, we conducted field experiments in Chuzhou, China, to study the yield and soil microbial community composition of six different wheat varieties. The soil bacterial and fungal communities were investigated using high‐throughput sequencing of the 16S rRNA and ITS gene regions. Our findings indicated that, compared to common wheat, high‐yielding and disease‐resistant (HD) wheat increased both bacterial and fungal α‐diversity by regulating soil nitrogen and phosphorus concentrations, significantly affecting community structure (Adonis, p < 0.001). HD wheat significantly altered the co‐occurrence network patterns of soil microbial communities. Network analyses revealed that HD wheat increased the complexity of fungal networks while exhibiting the opposite trend for bacterial networks. However, both the bacterial and fungal networks demonstrated increased stability. Furthermore, HD wheat may increase microbial migration rates, influencing assembly processes by promoting stochastic processes in bacterial and fungal communities. Overall, this study provides valuable insights into the ecological functions and driving factors of soil microbes, offering information for the development of ecological management strategies to achieve sustainable wheat cultivation and improve soil quality. Furthermore, HD wheat significantly modified the co‐occurrence network patterns of the soil microbial communities. Network analysis revealed increased fungal network complexity in HD wheat, whereas bacterial networks showed the opposite trend. However, both the bacterial and fungal networks exhibited enhanced stability. Additionally, HD wheat likely increased microbial migration rates, influencing assembly processes by promoting stochastic processes in both bacterial and fungal communities. Overall, this study provides valuable insights into the ecological functions and driving factors of soil microbes, providing information for the development of ecological management strategies to achieve sustainable wheat cultivation and improve soil quality.

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Fungal communities are more sensitive to nitrogen fertilization than bacteria in different spatial structures of silage maize under short-term nitrogen fertilization

Cited by 24 publications

References 51 publications

Changes in the Microbial Community in Maize (Zea mays L.) Root Spatial Structure Following Short-Term Nitrogen Application

Changes in the Microbial Community in Maize (Zea mays L.) Root Spatial Structure Following Short-Term Nitrogen Application

Ammonium fertilization increases the susceptibility to fungal leaf and root pathogens in winter wheat

Effects of Different Wheat Varieties on Soil Bacterial and Fungal Communities

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