Forage Grasses Steer Soil Nitrogen Processes, Microbial Populations, and Microbiome Composition in A Long-term Tropical Agriculture System

Momesso, Letusa; Crusciol, Carlos Alexandre Costa; Leite, Márcio Fernandes Alves; Bossolani, João William; Kuramae, Eiko E.

doi:10.1016/j.agee.2021.107688

Cited by 22 publications

(16 citation statements)

References 102 publications

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“…Compared to conventional fertilization, the strategy of reducing nitrogen fertilization might change the relative abundance of JG30-KF-AS9 and JG30-KF-CM45 to improve the productive function of the bacterial community of the tobacco-planting soil ( Chinta et al, 2021 ; Neupane et al, 2021 ; Zhang et al, 2021 ). Meanwhile, the reduction in nitrogen fertilizer might increase the relative abundance of Streptomyces (D30F) and Elsterales (D20F), which had the potential abilities to decrease the relative abundance of pathogens and their pathogenicity ( Vurukonda et al, 2018 ; Wang et al, 2021 ; Momesso et al, 2022 ). The reduction in the amount of nitrogen fertilizer (10–30%) showed significant advantages for tobacco planting compared to CK, because of the soil microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Microbial Responses to the Reduction of Chemical Fertilizers in the Rhizosphere Soil of Flue-Cured Tobacco

Shen

Zhang

et al. 2022

Front. Bioeng. Biotechnol.

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The overuse of chemical fertilizers has resulted in the degradation of the physicochemical properties and negative changes in the microbial profiles of agricultural soil. These changes have disequilibrated the balance in agricultural ecology, which has resulted in overloaded land with low fertility and planting obstacles. To protect the agricultural soil from the effects of unsustainable fertilization strategies, experiments of the reduction of nitrogen fertilization at 10, 20, and 30% were implemented. In this study, the bacterial responses to the reduction of nitrogen fertilizer were investigated. The bacterial communities of the fertilizer-reducing treatments (D10F, D20F, and D30F) were different from those of the control group (CK). The alpha diversity was significantly increased in D20F compared to that of the CK. The analysis of beta diversity revealed variation of the bacterial communities between fertilizer-reducing treatments and CK, when the clusters of D10F, D20F, and D30F were separated. Chemical fertilizers played dominant roles in changing the bacterial community of D20F. Meanwhile, pH, soil organic matter, and six enzymes (soil sucrase, catalase, polyphenol oxidase, urease, acid phosphatase, and nitrite reductase) were responsible for the variation of the bacterial communities in fertilizer-reducing treatments. Moreover, four of the top 20 genera (unidentified JG30-KF-AS9, JG30-KF-CM45, Streptomyces, and Elsterales) were considered as key bacteria, which contributed to the variation of bacterial communities between fertilizer-reducing treatments and CK. These findings provide a theoretical basis for a fertilizer-reducing strategy in sustainable agriculture, and potentially contribute to the utilization of agricultural resources through screening plant beneficial bacteria from native low-fertility soil.

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Section: Discussionmentioning

confidence: 99%

Microbial Responses to the Reduction of Chemical Fertilizers in the Rhizosphere Soil of Flue-Cured Tobacco

Shen

Zhang

et al. 2022

Front. Bioeng. Biotechnol.

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“…According to statistics, the area of ecological measures led by the establishment of cultivated pasture has exceeded 10,000 km 2 ( Liu et al, 2021 ; Qiao et al, 2021 ). The relevant studies have shown that the establishment of cultivated pastures can reduce the risk of soil erosion, protect the soil surface ( Momesso et al, 2022 ), and improve soil quality and nutrient content ( Baptistella et al, 2020 ). At the same time, it can also provide services for the agricultural ecosystem and improve crop yield ( Bonner et al, 2020 ), which is the last barrier to protect the fragile ecological environment and plays an irreplaceable role in the process of vegetation restoration ( Chi et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Cultivated Pastures on Soil Bacterial Communities in the Karst Rocky Desertification Area

et al. 2022

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Soil bacteria play an important role in regulating the process of vegetation restoration in karst ecosystems. However, the effects of vegetation restoration for different cultivated pastures on soil bacterial communities in the karst rocky desertification regions remain unclear. Therefore, we hypothesized that mixed pasture is the most effective for soil bacterial communities among different vegetation restorations. In this study, we systematically studied the soil properties and soil bacterial communities in four vegetation restoration modes [i.e., Dactylis glomerata pasture (DG), Lolium perenne pasture (LP), Lolium perenne + Trifolium repens mixed pasture (LT), and natural grassland (NG)] by using 16S rDNA Illumina sequencing, combined with six soil indicators and data models. We found that the vegetation restoration of cultivated pastures can improve the soil nutrient content compared with the natural grassland, especially LT treatment. LT treatment significantly increased the MBC content and Shannon index. The vegetation restoration of cultivated pastures significantly increased the relative abundance of Proteobacteria, but LT treatment significantly decreased the relative abundance of Acidobacteria. Soil pH and MBC significantly correlated with the alpha diversity of soil bacterial. Soil pH and SOC were the main factors that can affect the soil bacterial community. FAPROTAX analysis showed LT treatment significantly decreased the relative abundance of aerobic chemoheterotrophs. The results showed that the bacterial communities were highly beneficial to soil restoration in the LT treatment, and it confirmed our hypothesis. This finding provides a scientific reference for the restoration of degraded ecosystems in karst rocky desertification areas.

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“…Soil microbial communities in agroecosystems contribute to (i) soil health, nutrient cycling, and fertility [ 1 , 2 ], thereby increasing pathogen suppression [ 3 , 4 ] and processes that enhance crop yields [ 5 , 6 ]; (ii) the production [ 7 , 8 ] and mitigation of greenhouse gas (GHG) emissions [ 9 ]; and (iii) carbon sequestration through the formation of mineral-associated organic matter [ 2 , 10 ] and carbon storage [ 11 , 12 ]. All these soil microbe functions are directly or indirectly linked to soil physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Current Challenges and Pitfalls in Soil Metagenomics

2022

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Soil microbial communities are essential components of agroecological ecosystems that influence soil fertility, nutrient turnover, and plant productivity. Metagenomics data are increasingly easy to obtain, but studies of soil metagenomics face three key challenges: (1) accounting for soil physicochemical properties; (2) incorporating untreated controls; and (3) sharing data. Accounting for soil physicochemical properties is crucial for better understanding the changes in soil microbial community composition, mechanisms, and abundance. Untreated controls provide a good baseline to measure changes in soil microbial communities and separate treatment effects from random effects. Sharing data increases reproducibility and enables meta-analyses, which are important for investigating overall effects. To overcome these challenges, we suggest establishing standard guidelines for the design of experiments for studying soil metagenomics. Addressing these challenges will promote a better understanding of soil microbial community composition and function, which we can exploit to enhance soil quality, health, and fertility.

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Forage Grasses Steer Soil Nitrogen Processes, Microbial Populations, and Microbiome Composition in A Long-term Tropical Agriculture System

Cited by 22 publications

References 102 publications

Microbial Responses to the Reduction of Chemical Fertilizers in the Rhizosphere Soil of Flue-Cured Tobacco

Microbial Responses to the Reduction of Chemical Fertilizers in the Rhizosphere Soil of Flue-Cured Tobacco

Effect of Cultivated Pastures on Soil Bacterial Communities in the Karst Rocky Desertification Area

Current Challenges and Pitfalls in Soil Metagenomics

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