Interactions between nitrogen availability, bacterial communities, and nematode indicators of soil food web function in response to organic amendments

Milkereit, Janina; Geisseler, Daniel; Lazicki, Patricia; Settles, Matthew L.; Durbin‐Johnson, Blythe; Hodson, Amanda K.

doi:10.1016/j.apsoil.2020.103767

Cited by 27 publications

(8 citation statements)

References 75 publications

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“…Passage of materials through the worm Eisenia fetida digestive tract selectively modifies bacterial communities [ 78 ], whereas secretion of mucus-covered fecal pellets increases soil aggregation and provides readily available carbon to increase soil microbial activity [ 79 ] and nutrient availability [ 47 ]. The genus distinguishing the VC treatment, Chryseolinea , is promoted by compost amendment [ 80 ] and seed-applied biostimulant application [ 81 ]. Chryseolinea demonstrates enrichment in tomato roots [ 82 ] and has also been implicated in pathogenic Fusarium suppression [ 83 ].…”

Section: Discussionmentioning

confidence: 99%

Organic Amendments Alter Soil Hydrology and Belowground Microbiome of Tomato (Solanum lycopersicum)

2021

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Manure-derived organic amendments are a cost-effective tool that provide many potential benefits to plant and soil health including fertility, water retention, and disease suppression. A greenhouse experiment was conducted to evaluate how dairy manure compost (DMC), dairy manure compost-derived vermicompost (VC), and dehydrated poultry manure pellets (PP) impact the tripartite relationship among plant growth, soil physiochemical properties, and microbial community composition. Of tomato plants with manure-derived fertilizers amendments, only VC led to vigorous growth through the duration of the experiment, whereas DMC had mixed impacts on plant growth and PP was detrimental. Organic amendments increased soil porosity and soil water holding capacity, but delayed plant maturation and decreased plant biomass. Composition of bacterial communities were affected more by organic amendment than fungal communities in all microhabitats. Composition of communities outside roots (bulk soil, rhizosphere, rhizoplane) contrasted those within roots (endosphere). Distinct microbial communities were detected for each treatment, with an abundance of Massilia, Chryseolinea, Scedosporium, and Acinetobacter distinguishing the control, vermicompost, dairy manure compost, and dehydrated poultry manure pellet treatments, respectively. This study suggests that plant growth is affected by the application of organic amendments not only because of the soil microbial communities introduced, but also due to a synergistic effect on the physical soil environment. Furthermore, there is a strong interaction between root growth and the spatial heterogeneity of soil and root-associated microbial communities.

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Section: Discussionmentioning

confidence: 99%

Organic Amendments Alter Soil Hydrology and Belowground Microbiome of Tomato (Solanum lycopersicum)

2021

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“…Our results demonstrated that the treatment with 50% biogas slurry replacing for chemical N fertilizer significantly increased the relative abundances of genera Parasegetibacter , Gp5 , and Povalibacter , while genera Steroidobacter , Latescibacteria_genera_incertae_sedis , Gp11 , Gp15 , Chondromyces , and Gp22 were positively correlated the biogas slurry addition in BS treatment. Previous studies had shown that genera Parasegetibacter and Steroidobacter were beneficial microbes and could cause a decrease in extracellular antibiotic resistance genes in the soil, and could be activated by organic application ( Semenov et al., 2020 ; Milkereit et al., 2021 ; Zhang et al., 2021 ; Zhu et al., 2021 ). It was also reported that Acidobacteria could promote crop growth, and higher abundances of Acidobacteria Gp5 and Gp7 often existed in disease suppressive soils ( Shen et al., 2015 ; Xu et al., 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Changes in soil bacterial community and functions by substituting chemical fertilizer with biogas slurry in an apple orchard

Zhang

Shao

et al. 2022

Front. Plant Sci.

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Growing concerns about the negative environmental effects of excessive chemical fertilizer input in fruit production have resulted in many attempts looking for adequate substitution. Biogas slurry as a representative organic fertilizer has the potential to replace chemical fertilizer for improvement of sustainability. However, it is still poorly known how biogas slurry applications may affect the composition of soil microbiome. Here, we investigated different substitution rates of chemical fertilizer with biogas slurry treatment (the control with no fertilizer and biogas slurry, CK; 100% chemical fertilizer, CF; biogas slurry replacing 50% of chemical fertilizer, CBS; and biogas slurry replacing 100% of chemical fertilizer, BS) in an apple orchard. Soil bacterial community and functional structure among treatments were determined using Illumina sequencing technology coupled with Functional Annotation of Prokaryotic Taxonomy (FAPROTAX) analysis. Leaf nutrient contents, apple fruit and soil parameters were used to assess plant and soil quality. Results showed that most of fruit parameters and soil properties were significantly varied in the four treatments. CBS treatment increased the contents of soil organic matter, alkali nitrogen and available potassium average by 49.8%, 40.7% and 27.9%, respectively. Treatments with biogas slurry application increased the single fruit weight, fresh weight, and dry weight of apple fruit average by 15.6%, 18.8% and 17.8, respectively. Soil bacterial community dominance and composition were significantly influenced by substituting of chemical fertilizer with biogas slurry. Biogas slurry application enhanced the relative abundance of some beneficial taxa (e.g. Acidobacteria Gp5 and Gp7, Parasegetibacter) and functional groups related to carbon and nitrogen cycling such as chemoheterotrophy, cellulolysis, and nitrogen fixation. Soil available phosphorus and potassium, pH and electrical conductivity were identified having a high potential for regulating soil bacterial specific taxa and functional groups. This study showed that the proper ratio application (50%: 50%) of biogas slurry with chemical fertilizer could regulate soil bacterial composition and functional structure via changes in soil nutrients. The variations of bacterial community could potentially take significant ecological roles in maintaining apple plant growth, soil fertility and functionality.

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“…Additionally, the vegetation patterns of the soil rhizosphere may also trigger the microbial ecology of the rhizosphere. Similarly, soil organic amendment is reported as the key driver for the dramatic shift of the rhizobacterial community [30]. The interaction of the N-cycler bacterial community with the nematode is evident for the sustainable improvement of nutrient cycling.…”

Section: Rhizosphere As a Crucial Hotbed For Plant-beneficial Rhizobacteria Interactionmentioning

confidence: 95%

“…The system signals may ignite the mechanism of plant-rhizobacteria interaction, and thus it emerges as a positive communication among the respective stakeholders through root exudates [22,24]. A recent study demonstrated the holistic aspect of PGPR by revisiting a study aimed at the long-term and practical deployment of screened PGPR strains in real-world situations [28][29][30][31][32]. The detailed application of beneficial rhizobacteria is described according to their functions (Table 1).…”

Section: Beneficial Role Of Rhizobacteria For the Enhancement Of Soil And Plant Healthmentioning

confidence: 99%

Prospect and Challenges for Sustainable Management of Climate Change-Associated Stresses to Soil and Plant Health by Beneficial Rhizobacteria

et al. 2021

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Climate change imposes biotic and abiotic stresses on soil and plant health all across the planet. Beneficial rhizobacterial genera, such as Bacillus, Pseudomonas, Paraburkholderia, Rhizobium, Serratia, and others, are gaining popularity due to their ability to provide simultaneous nutrition and protection of plants in adverse climatic conditions. Plant growth-promoting rhizobacteria are known to boost soil and plant health through a variety of direct and indirect mechanisms. However, various issues limit the wider commercialization of bacterial biostimulants, such as variable performance in different environmental conditions, poor shelf-life, application challenges, and our poor understanding on complex mechanisms of their interactions with plants and environment. This study focused on detecting the most recent findings on the improvement of plant and soil health under a stressful environment by the application of beneficial rhizobacteria. For a critical and systematic review story, we conducted a non-exhaustive but rigorous literature survey to assemble the most relevant literature (sorting of a total of 236 out of 300 articles produced from the search). In addition, a critical discussion deciphering the major challenges for the commercialization of these bioagents as biofertilizer, biostimulants, and biopesticides was undertaken to unlock the prospective research avenues and wider application of these natural resources. The advancement of biotechnological tools may help to enhance the sustainable use of bacterial biostimulants in agriculture. The perspective of biostimulants is also systematically evaluated for a better understanding of the molecular crosstalk between plants and beneficial bacteria in the changing climate towards sustainable soil and plant health.

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Interactions between nitrogen availability, bacterial communities, and nematode indicators of soil food web function in response to organic amendments

Cited by 27 publications

References 75 publications

Organic Amendments Alter Soil Hydrology and Belowground Microbiome of Tomato (Solanum lycopersicum)

Organic Amendments Alter Soil Hydrology and Belowground Microbiome of Tomato (Solanum lycopersicum)

Changes in soil bacterial community and functions by substituting chemical fertilizer with biogas slurry in an apple orchard

Prospect and Challenges for Sustainable Management of Climate Change-Associated Stresses to Soil and Plant Health by Beneficial Rhizobacteria

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