Variations in soil bacterial taxonomic profiles and putative functions in response to straw incorporation combined with N fertilization during the maize growing season

Li, Hui; Zhang, Yongyong; Yang, Shan; Wang, Zhirui; Xue, Feng; Liu, Heyong

doi:10.1016/j.agee.2019.106578

Cited by 78 publications

(70 citation statements)

References 82 publications

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“…At the finer level of resolution of classes, N fertilization increased the relative abundances of the so-called copiotrophic Alphaproteobacteria and Gammaproteobacteria, while Deltaproteobacteria diminished and Betaproteobacteria and Epsilonproteobacteria were unaffected by N inputs (Figure 3). Our results are in agreement with those reported by Li et al [43], in soil cultivated with maize with different N levels, as well as with similar patterns observed in soil under wheat-maize-soybean crop rotation and fertilized with inorganic N [44].…”

Section: Discussionsupporting

confidence: 94%

“…Chloroflexi, Cyanobacteria, and Firmicutes are frequent inhabitants in the soil environment, contributing to the main steps of the N cycle (N fixation and denitrification), while members of the Planctomycetes phylum are responsible for the anaerobic ammonia oxidation. Their RA in our study where comparable to the reported values in Chinese black soils during the maize growing season [43]. Relative abundances of Cyanobacteria [55] and Planctomycetes [50] were reported to decrease with inorganic N fertilization compared to unfertilized control or organic fertilization.…”

Section: Discussionsupporting

confidence: 89%

“…The highest rate of N fertilization caused a decline in all alpha diversity indexes after a 34-year treatment, which coincides with other research studies [43,44]. Direct effect of increased N input on prokaryotic community structure may be linked to the indirect effect of pH changes when soil nutrient availability and pH are concomitantly altered by fertilization [16].…”

Section: Discussionsupporting

confidence: 89%

“…While the analysis of the response of microbial communities within this low level of taxonomic resolution (phylum) is done under the (false) assumption that all members of a phylum have similar biochemical and metabolic capabilities, it is however a convenient and commonly adopted approach to look for patterns within a manageable number of groups. Moreover, despite the enormous amount of phylogenetic and physiological diversity within the main bacterial phyla, functional diversity may be broadly mapped across major phyla of Bacteria and Archaea [42,43].…”

Section: Discussionmentioning

confidence: 99%

“…Ding et al [44] observed significant reduction of alpha diversity indexes in N P K fertilization treatment compared to unfertilized soil cropped with maize-wheat-soybean rotation. These contrasting changes are mainly associated with reduced soil pH [43], due to the long-term application of urea and ammonium fertilizers [45]. Likely, high N levels in mineral fertilizer have resulted in intensified soil acidification through nitrification of the ammonium applied [17].…”

Section: Discussionmentioning

confidence: 99%

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Long-Term N Fertilization Decreased Diversity and Altered the Composition of Soil Bacterial and Archaeal Communities

et al. 2019

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Soil microbial communities are essential in the cycling of nutrients that affect crop production. Our goal was to characterize the microbial community structure following 34 years of nitrogen (N) fertilization treatments in continuous maize production in highly fertile soils. Using 16S rRNA gene-based analysis of the V4 region via Illumina HiSeq2500 technology with downstream bioinformatics processing and analysis with QIIME 2.0, we aimed to characterize the prokaryotic communities under three increasing N fertilization rates. Factor analyses indicated that a high N level decreased the diversity of soil bacterial and archaeal communities and altered the relative abundance (RA) of the dominant (>1% RA) and minor (<1% RA) phyla. Among the 12 major phyla, we determined increases in Gemmatimonadetes, Proteobacteria, and Euryarchaeota, accompanied by reductions in Cyanobacteria, Chloroflexi, Firmicutes, and Planctomycetes with increasing N. Within the 29 minor phyla, N fertilization led to increases in Aquificae, WPS2, Parvarchaeota, AD3, FCPU426, Armatimonadetes, TM7, Chlamydiae, and OD1, along with reductions of Nitrospirae, WS3, Tenericutes, Lentisphaerae, OP3, Synergistetes, Thermotogae, and prokaryotes that could not be reliably assigned to a phylum (classified as Other).

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Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Long-Term N Fertilization Decreased Diversity and Altered the Composition of Soil Bacterial and Archaeal Communities

et al. 2019

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Plant types shape soil microbial composition, diversity, function, and co‐occurrence patterns in cultivated land of a karst area

Wei

et al. 2022

Land Degrad Dev

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Plants can alter microbial communities through root exudates, and change the characteristics of the soil. However, the relationship between soil microbial communities and environmental factors is not well understood. Here, we studied bacterial and fungal communities and their relationships with environmental factors. We integrated data of environmental factors, microbial composition, diversity, functional prediction, and co-occurrence network from uncultivated, maize, cabbage, and cocozelle soils in a karst area of Southwest China. Soil bacterial and fungal community composition differed with plant types. Maize soil had more taxa and greater alpha diversity of bacteria and fungi than other soils. In maize soil, the relative abundance of Actinobacteria and Ascomycota was significantly lower than that in uncultivated soil, while its contents of soil organic matter (OM), alkali-hydrolyzable nitrogen, and total nitrogen (TN) showed the opposite trend. These indicators were not significantly different between cabbage and cocozelle soils. The results of the Mantel test and the RDA analysis indicated that TN and OM were important drivers of bacterial and fungal communities. Functional prediction and network analysis showed that maize soil had a high nitrogen fixation capacity and a complex and stable network. To summarize, maize soil not had a low relative abundance of Ascomycota and high content of TN and OM, nitrogen fixation ability, and a rich microbial community. Therefore, cultivating maize is suitable for improving soil microbial community. These findings might help in formulating a reasonable cultivation management program to prevent land degradation in the karst areas.

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Nitrogen release and microbial community characteristics during the decomposition of field‐incorporated corn straw in Northeast China

Yan,

Zhao,

et al. 2024

Land Degrad Dev

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Straw incorporation increases the amount of nutrients in soil and greatly impacts soil nitrogen and microbial communities. In this study, 15N‐labeled corn straw was used as the material, the experiment consisted of five treament (AS: placing the straw 15 cm above the soil surface, SM: using the straw to mulch the soil surface, B15: burying the straw 15 cm below the ground surface, B30: burying the straw 30 cm below the ground surface, B45: burying the straw 45 cm below the ground surface). The changes in 15N abundance in straw were analyzed. An estimation method for nitrogen release and uptake by field‐incorporated straw was proposed, and the relationships between nitrogen release and uptake and related microbes were established. The results showed that the exchange of nitrogen between maize straw buried in soil at different depths and the environment was not significant. The corn straw exposed to the air absorbed more nitrogen from the environment in the second year of decomposition, and the larger the area exposed to the air was, the more nitrogen was absorbed from the environment. The relative abundances of Burkholderiales, Flavobacteriales, Pseudomonadales, and Sphingobacteriales were significantly positively correlated with the straw decomposition rate and nitrogen release rate. The relative abundance of Rhizobiales was significantly negatively correlated with the straw decomposition rate and nitrogen release rate. The relative abundances of Sphingobacteriales, Flavobacteriales, and Pseudomonadales were significantly negatively correlated with the straw nitrogen uptake rate.

show abstract

Variations in soil bacterial taxonomic profiles and putative functions in response to straw incorporation combined with N fertilization during the maize growing season

Cited by 78 publications

References 82 publications

Long-Term N Fertilization Decreased Diversity and Altered the Composition of Soil Bacterial and Archaeal Communities

Long-Term N Fertilization Decreased Diversity and Altered the Composition of Soil Bacterial and Archaeal Communities

Plant types shape soil microbial composition, diversity, function, and co‐occurrence patterns in cultivated land of a karst area

Nitrogen release and microbial community characteristics during the decomposition of field‐incorporated corn straw in Northeast China

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