Soil microbial diversity and composition: Links to soil texture and associated properties

Xia, Qing; Rufty, Thomas W.; Shi, Wei

doi:10.1016/j.soilbio.2020.107953

Cited by 153 publications

(89 citation statements)

References 52 publications

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“…The greater impact of compost on the sandy soil bacterial diversity than WTR thus supported Rousk's (2010) association between pH and bacterial diversity. The particle size distribution and particle texture of WTR was previously shown to increase the heterogeneity and pore size distribution (water holding capacity) of these nutrientpoor sandy soils (Steytler, 2021), also supporting Xia et al (2020). This shift in microbial diversity based on soil texture appeared to be species dependent, particularly linked to access to organic compounds in finer-textured soils, such as the more heterogeneous WTR amendment.…”

Section: How Does Wtr Affect Rhizosphere Microbiology?mentioning

confidence: 55%

“…It is well established that soil bacterial diversity increases with soil pH (Rousk et al, 2010), which was shown in certain studies to have a greater effect than mineral N or P (Zhalnina et al, 2015). Furthermore, soil texture (clay content and pore sizes) was also shown to affect microbial diversity (generally increasing with increasing clay content), although soil pH is dominant (Xia et al, 2020). The enhancement in bacterial diversity could be explained by the treatments' effects on soil pH and texture because compost (pH 7.5-7.6 in KCl) (Supplemental Table S3) increased the sandy soil pH (4.3-5.6, in KCl) significantly more than the CT-Fe WTR used in this trial (pH 5.8-6.6, in KCl), correlating with the shift in diversity (Figure 4b).…”

Section: How Does Wtr Affect Rhizosphere Microbiology?mentioning

confidence: 97%

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The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits

et al. 2021

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Water treatment residual (WTR) is composed of sludges from the potable water treatment process, currently largely destined for landfill. This waste can be diverted to rebuild degraded soils, aligning with the UN's Sustainable Development Goals 12 (Consumption and Production) and 15 (Terrestrial Ecosystems). Biosolids are tested against stringent pathogen guidelines, yet few studies have explored the microbial risk of WTR land application, despite anthropogenic impacts on water treatment. We explored the microbial risks and benefits of amending nutrient-poor sandy soil with WTRs. Our results showed that the culturable pathogen load of wet and dry WTRs did not warrant pre-processing before land application, according to South African national quality guidelines, with fecal coliforms not exceeding 10 4 colony forming units per gram dry weight in wet sludges sampled from four South African and Zimbabwean water treatment plants and decreasing upon drying and processing. There was no culturable pathogenic (fecal coliforms, enterococci, Salmonella, and Shigella) regrowth in soil incubations amended with dry WTR. However, the competition (microbial load and diversity) introduced by a WTR co-amendment did not limit pathogen survival in soils amended with biosolids. Application of WTR to nutrient-poor sandy soils for wheat (Triticum aestivum L.) growth improved the prokaryotic and eukaryotic culturable cell concentrations, similar to compost. However, the compost microbiome more significantly affected the bacterial beta diversity of the receiving soil than WTR when analyzed with automated ribosomal intergenic spacer analysis. Thus, although there was a low pathogen risk for WTR amendment in receiving soils and total soil microbial loads were increased, microbial diversity was more significantly enhanced by compost than WTR.

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Section: How Does Wtr Affect Rhizosphere Microbiology?mentioning

confidence: 55%

Section: How Does Wtr Affect Rhizosphere Microbiology?mentioning

confidence: 97%

The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits

et al. 2021

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“…This phenomenon happened due to reduced rainfall and water ebb periods in the reservoir area, resulting in the change of soil properties [ 61 ]. These were not conducive to the growth and development of microorganisms [ 62 , 63 ]. Additionally, the soil bacterial community abundance of four plants was significantly different from the soil bulk in the different periods ( Figure 7 A).…”

Section: Discussionmentioning

confidence: 99%

Artificial Plantation Responses to Periodic Submergence in Massive Dam and Reservoir Riparian Zones: Changes in Soil Properties and Bacterial Community Characteristics

Arif

et al. 2021

Biology

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Plant and microbiome interactions are necessary for plant nutrient acquisition. However, relatively little is known about the responses of roots, bulk, and rhizosphere soil microbial communities in different artificial vegetation types (woody and herbaceous) in riparian areas of massive dams and reservoirs. Therefore, this study aims to assess such responses at elevations of 165–170 m a.s.l. in the riparian zones of the Three Gorges Dam Reservoir, China. The samples were collected containing the rhizosphere soil, bulk soil, and roots of herbaceous and woody vegetation at different emergence stages in 2018. Then, all the samples were analyzed to quantify the soil properties, bacterial community characteristics, and their interaction in the early and late emergence phases. In different periods, the weight of dominant soil bacteria, including Proteobacteria, Acidobacteria, Actinobacteria, Chloroflexi, and Cyanobacteria, was higher, and their composition was different in the rhizosphere, bulk soil, and endophytes. Moreover, the soil co-occurrence networks indicated that the weight of soil physical properties was higher than chemical properties in the early emergence stage. In contrast, the weight of chemical properties was relatively higher in the late emergence stage. Furthermore, the richness and diversity of the bacterial community were mainly affected by soil organic matter. This study suggests that these herbaceous and woody vegetation are suitable for planting in reservoir areas affected by hydrology and human disturbance in light of soil nutrients and soil microbial communities, respectively. Additionally, these results provide valuable information to inoculate the soil with key microbiota members by applying fertilizers, potentially improving plant health and soil production.

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“…Standard deviation can also be used as a further test to indicate the degree of sorting of the soil sample or the particle size distribution [7]. Soil Texture shows the percentage of sand, silt, and clay in the soil, which is a significant component for conducting soil surveys to determine the potential for land use, its boundaries, and its management [8]. Sturdy efforts have been carried out to relate soil properties with soil texture.…”

Section: Introductionmentioning

confidence: 99%

Soil Texture Distribution for East Wasit Province, Iraq

Shamkhi

AL-Badry

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Soil texture affects many physical and chemical properties of soil. Knowledge of soil texture is essential for all water and soil studies. The aim of the research is to draw a map of the spatial distribution of soil texture in the region of eastern Wasit province and know the relationship of texture to the soil’s hydrological groups. Laboratory tests were conducted on 25 soil samples. With a depth of 50-75 cm, were selected from locations that represent the study area. According to the unified classification system, The results showed that the soil texture for the samples locations was 40% sand, 16% for both silt loam and sandy loam, 12% for loamy sand, 8% for both sandy clay loam and sandy loam. A soil texture classification map was produced for the study area. The first soil texture map for the area differs significantly from the World Food and Agriculture Organization soil texture classification map. It adopts signed tests of the site. The statistical analysis showed that the per cent sand’s standard deviation was 22.65%, silt 19.247%, and 6.416% clay. It turns out that 52% of the soil models from hydrologic group A, 24% from hydrologic group B and 24% from hydrologic group C, Arc GIS software was used to produce maps.

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Soil microbial diversity and composition: Links to soil texture and associated properties

Cited by 153 publications

References 52 publications

The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits

The microbiology of rebuilding soils with water treatment residual co‐amendments: Risks and benefits

Artificial Plantation Responses to Periodic Submergence in Massive Dam and Reservoir Riparian Zones: Changes in Soil Properties and Bacterial Community Characteristics

Soil Texture Distribution for East Wasit Province, Iraq

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