Soil Bacterial Diversity Is Positively Correlated with Decomposition Rates during Early Phases of Maize Litter Decomposition

Chiba, Akane; Uchida, Yoshitaka; Kublik, Susanne; Vestergaard, Gisle; Buegger, Franz; Schloter, Michael; Schulz, Stefanie

doi:10.3390/microorganisms9020357

Cited by 30 publications

(11 citation statements)

References 103 publications

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“…Similarly, a decomposition study by Lauber et al [11] reported that bacterial communities of carcasses buried in soil with an intact microbial community and soil without an intact microbial community vary from each other. Moreover, several studies reported that bacterial communities vary significantly at different stages of decomposition [55,56]. However, as the decomposition progressed, we observed changes in the bacterial species present at each period across all burial set-ups.…”

Section: Discussionmentioning

confidence: 50%

Impact of Soil Microbes and Oxygen Availability on Bacterial Community Structure of Decomposing Poultry Carcasses

Miguel

Kim

Lee

et al. 2021

Animals

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The impact of soil with an intact microbial community and oxygen availability on moisture content, soil pH, and bacterial communities during decomposition of poultry carcasses was investigated. Poultry carcasses were decomposed in soil with or without a microbial community, under aerobic or anaerobic conditions. The samples collected in each microcosm burial set-up were analyzed by targeted 16S rRNA amplicon sequencing and Amplicon sequence variants (ASV) method. Our results showed that moisture was high in the burial set-ups under anaerobic conditions and pH was high in the burial set-ups under aerobic conditions. Meanwhile, the Chao1 and Shannon index significantly differed between the different burial set-ups and across different time points. In addition, bacterial taxa composition during the early period of decomposition differed from that of the late period. A total of 23 phyla, 901 genera, and 1992 species were identified. Firmicutes was the most dominant phyla in all burial set-ups throughout the decomposition. At day 60, Pseudogracilibacillus was dominant in the burial set-ups under aerobic conditions, while Lentibacillus dominated in the burial set-ups under anaerobic conditions. This study demonstrated that the soil microbial community and availability of oxygen significantly affected the changes in moisture content, pH, and bacterial composition during the decomposition process.

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Section: Discussionmentioning

confidence: 50%

Impact of Soil Microbes and Oxygen Availability on Bacterial Community Structure of Decomposing Poultry Carcasses

Miguel

Kim

Lee

et al. 2021

Animals

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“…3) to the decomposed compounds indicated different taxa produced distinctly different enzyme systems (Fontaine and Barot 2005;Blagodatskaya et al 2009;Blagodatskaya and Kuzyakov 2013). The stronger linkage of enzyme parameters with bacteria and archaea than fungi observed in the present study might be due to the lower abundance of fungi but possibly indicated a broader functional diversity within bacterial and archaeal communities that are able to decompose plant and microbial residues as well as to hydrolyze organic P compounds, while fungi invested more resources in P acquisition (Smith et al 2011;Chiba et al 2021). Although the potential EAA were analysed in soil taken at a larger distance from root surface, we did find the correlation to the microbiome in the rhizosphere (Figs.…”

Section: Relative Abundance Of Microbial Taxa Affected By Texture Dep...mentioning

confidence: 65%

Soil texture is a stronger driver of the maize rhizosphere microbiome and extracellular enzyme activities than soil depth or the presence of root hairs

Yim

Ibrahim²,

Rüger³

et al. 2022

Preprint

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AimsDifferent drivers are known to shape rhizosphere microbiome assembly. How soil texture (Texture) and presence or lack of root hairs (Root Hair) of plants affect the rhizosphere microbiome assembly and soil potential extracellular enzyme activities (EEA) at defined rooting depth (Depth) is still a knowledge gap. We investigated effects of these drivers on microbial assembly in rhizosphere and on potential EEA in root-affected soil of maize. MethodsSamples were taken from three depths of root hair defective mutant rth3 and wild-type WT maize planted on loam and sand in soil columns after 22 days. Rhizosphere bacterial, archaeal, fungal and cercozoan communities were analysed by sequencing of 16S rRNA gene, ITS and 18S rRNA gene fragments. Soil potential EEA of ß-glucosidase, acid phosphatase and chitinase were estimated using fluorogenic substrates. ResultsThe bacterial, archaeal and cercozoan alpha- and beta-diversity were significantly, and strongly altered by Texture, followed by Depth and Root Hair. Texture and Depth had a small impact on fungal assembly, and only fungal beta-diversity was significantly affected. Significant impacts by Depth and Root Hair on beta-diversity and relative abundances at taxonomic levels of bacteria, archaea, fungi and cercozoa were dependent on Texture. Likewise, the patterns of potential EEA followed the trends of microbial communities, and the potential EEA correlated with the relative abundances of several taxa.ConclusionsTexture was the strongest driver of rhizosphere microbiome and of soil potential EEA, followed by Depth and Root Hair, similarly to findings in maize root architecture and plant gene expression studies.

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“…In addition to the direct chemical effects indicated so far, there are indirect biological effects that constrain the phosphorus availability to plants in acidic soils. In this regard, plant litter decomposition is important for the recycling of not only carbon but also other nutrients such as phosphorus in soils [ 11 ]. Since soil pH exerts a profound effect on soil microbial communities through its effects on nutrient availability [ 9 ], biological communities, which are positively correlated with litter decomposition rates [ 11 ], tend to become less active and diverse as pH decreases [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, plant litter decomposition is important for the recycling of not only carbon but also other nutrients such as phosphorus in soils [ 11 ]. Since soil pH exerts a profound effect on soil microbial communities through its effects on nutrient availability [ 9 ], biological communities, which are positively correlated with litter decomposition rates [ 11 ], tend to become less active and diverse as pH decreases [ 12 ]. Thus, since much of the phosphorus taken up by crops is provided via the mineralization of soil organic materials [ 8 ], the impacts of soil acidity on microbial diversity and communities indirectly curtail soil phosphorus availability to crops.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil

Olego

Cuesta-Lasso²,

Visconti

et al. 2022

Plants

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In addition to aluminum and other heavy metal toxicities, acidic soils also feature nutrient deficits that are not easily overcome by merely adding the required amounts of mineral fertilizers. One of the most critically scarce nutrients in acidic soils is phosphorus, which reacts with aluminum and iron to form phosphates that keep soil phosphorus availability significantly low. Liming ameliorates acidic soils by increasing pH and decreasing aluminum contents; however, it also increases the amount of calcium, which can react with phosphorus to form low-solubility phosphates. In the present work, three liming materials, namely, dolomitic limestone, limestone and sugar foam, were applied on a Typic Palexerult cropped with rye. The effects of these materials on soil properties, including soil available phosphorus extracted with the Olsen and Bray-1 methods, rye phosphorus content in stems and stem and spike harvested biomasses were monitored for nine years. According to the Olsen extraction, the amount of soil available phosphorus generally decreased following liming, with limestone presenting the lowest values; however, the amount of soil available phosphorus increased according to the Bray-1 extraction, though only to a significant extent with the sugar foam from the third year onward. Regardless, the phosphorus content in rye and the relative biomass yield in both stems and spikes generally increased as a consequence of liming. Since crop uptake and growth are the ultimate tests of soil nutrient availability, the inconsistent stem phosphorus content results following the Olsen and Bray-1 extraction methods suggest a lowered efficiency of both extractants regarding crops in soils rich in both aluminum and calcium ions. This decrease can lead to important interpretation errors in the specific conditions of these limed acidic soils, so other methods should be applied and/or researched to better mimic the crop roots’ phosphorus extraction ability. Consequently, the effects of the liming of acidic soils on phosphorus availability and crop performance in the short and long term will be better understood.

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Soil Bacterial Diversity Is Positively Correlated with Decomposition Rates during Early Phases of Maize Litter Decomposition

Cited by 30 publications

References 103 publications

Impact of Soil Microbes and Oxygen Availability on Bacterial Community Structure of Decomposing Poultry Carcasses

Impact of Soil Microbes and Oxygen Availability on Bacterial Community Structure of Decomposing Poultry Carcasses

Soil texture is a stronger driver of the maize rhizosphere microbiome and extracellular enzyme activities than soil depth or the presence of root hairs

Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil

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