Combined application of organic manure and chemical fertilizers stabilizes soil N-cycling microflora

Sun, Run‐Cang; Wang, Daozhong; Guo, Zhaoxin; Hua, Keke; Guo, Xisheng; Chen, Yan; Liu, Binbin; Chu, Haiyan

doi:10.1007/s42832-022-0165-z

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…In contrast to AOA, the peak of AOB gene abundance appeared in long-term nitrogen treatment (CF). It is due to that AOB is suited to survive in alkaline and nitrogen-enriched environments, and the application of nitrogen can provide high soil NH 4 + -N concentration for AOB growth ( Verhamme et al, 2011 ; Sun et al, 2023 ). Additionally, we found that AOB gene abundance was lower in SMCF treatment than in CF treatment ( Figure 2H ).…”

Section: Discussionmentioning

confidence: 99%

The addition of discrimination inhibitors stimulations discrimination potential and N2O emissions were linked to predation among microorganisms in long term nitrogen application and straw returning systems

Jia,

Zhou,

et al. 2024

Front. Microbiol.

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IntroductionAmmonia oxidizing archaea (AOA) and ammonia oxidizing bacteria (AOB) have been proven to be key microorganisms driving the ammonia oxidation process. However, under different fertilization practices, there is a lack of research on the impact of interaction between predators and AOA or AOB on nitrogen cycling at the multi-trophic level.MethodsIn this study, a network-oriented microscopic culture experiment was established based on four different long-term fertilization practices soils. We used the nitrification inhibitors 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxide-3-oxyl (PTIO) and 3, 4-Dimethylpyrazole phosphate (DMPP) inhibited AOA and AOB, respectively, to explore the impact of interaction between protists and AOA or AOB on nitrogen transformation.ResultsThe results showed that long-term nitrogen application promoted the potential nitrification rate (PNR) and nitrous oxide (N2O) emission, and significantly increased the gene abundance of AOB, but had no obvious effect on AOA gene abundance. DMPP significantly reduced N2O emission and PNR, while PTIO had no obvious effect on them. Accordingly, in the multi-trophic microbial network, Cercozoa and Proteobacteria were identified as keystone taxa of protists and AOB, respectively, and were significantly positively correlated with N2O, PNR and nitrate nitrogen. However, Nitrososphaerota archaeon as the keystone species of AOA, had an obvious negative linkage to these indicators. The structural equation model (SEM) showed that AOA and AOB may be competitors to each other. Protists may promote AOB diversity through direct trophic interaction with AOA.ConclusionThe interaction pattern between protists and ammonia-oxidizing microorganisms significantly affects potential nitrification rate and N2O emission, which has important implications for soil nitrogen cycle.

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Section: Discussionmentioning

confidence: 99%

The addition of discrimination inhibitors stimulations discrimination potential and N2O emissions were linked to predation among microorganisms in long term nitrogen application and straw returning systems

Jia,

Zhou,

et al. 2024

Front. Microbiol.

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“…Notably, the functional groups of bacteria catalyzing the same processes involved in nitrogen cycling responded differently to intercropping and N fertilization practices. These different environmental adaptations and niche divergence may enhance the persistence of nitrogen cycling in the face of multiple environmental changes, such as long-term fertilization croplands ( Sun et al, 2020 , 2021 , 2023b ) and may be an important mechanism for the sustainability of nitrogen cycling.…”

Section: Discussionmentioning

confidence: 99%

Maize-soybean intercropping improved maize growth traits by increasing soil nutrients and reducing plant pathogen abundance

Liu,

Zhao

2023

Front. Microbiol.

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IntroductionMaize (Zea mays L.)–soybean (Glycine max L.) intercropping has been widely utilized in agricultural production due to its effectiveness in improving crop yield and nutrient use efficiency. However, the responses of maize rhizosphere microbial communities and the plant pathogen relative abundance to maize growth traits in maize-soybean intercropping systems with different chemical nitrogen fertilizer application rates remain unclear.MethodsIn this study, a field experiment was conducted, and the bacterial and fungal communities of maize rhizosphere soils in maize-soybean intercropping systems treated with different N fertilization rates were investigated using Illumina NovaSeq sequencing. Maize growth traits, soil physicochemical properties and soil enzyme activities were also examined.Results and discussion:We found that intercropping and N fertilizer treatments strongly influenced soil microbial diversity, structure and function. The PLSPM (partial least squares path modeling) confirmed that soil nutrients directly positively affected maize biomass and that intercropping practices indirectly positively affected maize biomass via soil nutrients, especially NH4+-N. Intercropping agronomic approaches also improved maize growth traits by reducing the plant pathogen abundance, and the relative abundance of the plant pathogen Trichothecium roseum significantly decreased with intercropping treatments compared to monocropping treatments. These results confirmed the benefits of maize-soybean intercropping treatments for agricultural production.

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“…Thus, P limitation in soils can play an important role in shaping the composition of soil microbial communities and their metabolic capabilities in bulk soil and rhizosphere environments, i.e., differences in P availability influencing soil bacterial communities and their functional attributes 132 . Available P levels explained a significant percentage of the variation in overall soil bacterial and archaeal community composition in the Australian and Panamanian soil data and fungal community composition in subtropic forest systems, highlighting the broad importance of P availability in shaping belowground communities across diverse ecosystems and soil types 121,132,133 .…”

Section: Attributes/environmental Variables–with Perceived Mechanisti...mentioning

confidence: 99%

“…The application of manure and other organic sources has increasingly been encouraged to reduce the decline in soil organic carbon (SOC) and as a source of plant nutrients in forms that are less readily lost from plant‐available pools. By acting as a source of C and nutrients to soil microbes, application of manures and other such organic sources reshapes soil microbial community composition and alters microbial interactions, in particular specific functional groups and biological functions, depending upon the composition of such inputs 118 , 119 , 120 , 121 . Long‐term application of manures has been shown to increase antibiotic resistance genes (ARGs) as a direct source of ARGs and by increasing the abundance of indigenous ARGs 120 .…”

Section: Attributes/environmental Variables–with Perceived Mechanisti...mentioning

confidence: 99%

Ranking environmental and edaphic attributes driving soil microbial community structure and activity with special attention to spatial and temporal scales

Gupta,

Tiedje

2024

mLife

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The incredibly complex soil microbial communities at small scales make their analysis and identification of reasons for the observed structures challenging. Microbial community structure is mainly a result of the inoculum (dispersal), the selective advantages of those organisms under the habitat‐based environmental attributes, and the ability of those colonizers to sustain themselves over time. Since soil is protective, and its microbial inhabitants have long adapted to varied soil conditions, significant portions of the soil microbial community structure are likely stable. Hence, a substantial portion of the community will not correlate to often measured soil attributes. We suggest that the drivers be ranked on the basis of their importance to the fundamental needs of the microbes: (i) those that supply energy, i.e., organic carbon and electron acceptors; (ii) environmental effectors or stressors, i.e., pH, salt, drought, and toxic chemicals; (iii) macro‐organism associations, i.e., plants and their seasonality, animals and their fecal matter, and soil fauna; and (iv) nutrients, in order, N, P, and probably of lesser importance, other micronutrients, and metals. The relevance of drivers also varies with spatial and time scales, for example, aggregate to field to regional, and persistent to dynamic populations to transcripts, and with the extent of phylogenetic difference, hence phenotypic differences in organismal groups. We present a summary matrix to provide guidance on which drivers are important for particular studies, with special emphasis on a wide range of spatial and temporal scales, and illustrate this with genomic and population (rRNA gene) data from selected studies.

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Combined application of organic manure and chemical fertilizers stabilizes soil N-cycling microflora

Cited by 9 publications

References 22 publications

The addition of discrimination inhibitors stimulations discrimination potential and N2O emissions were linked to predation among microorganisms in long term nitrogen application and straw returning systems

The addition of discrimination inhibitors stimulations discrimination potential and N2O emissions were linked to predation among microorganisms in long term nitrogen application and straw returning systems

Maize-soybean intercropping improved maize growth traits by increasing soil nutrients and reducing plant pathogen abundance

Ranking environmental and edaphic attributes driving soil microbial community structure and activity with special attention to spatial and temporal scales

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