Response of bacterial communities in coastal mudflat saline soil to sewage sludge amendment

Bai, Yanchao; Mei, Lijuan; Zuo, Wengang; Zhang, Yang; Gu, Chuanhui; Shan, Yuhua; Hu, Jian; Dai, Qigen

doi:10.1016/j.apsoil.2019.07.007

Cited by 45 publications

(13 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent studies report that sewage sludge enhances soil microbial diversity [56] since it ameliorates the soil environment for microbial proliferation and provides macro-and micronutrients including organic matter. Our results confirm a recent hypothesis that sewage sludge compost increases the diversity and abundance of bacterial communities, because it stimulates the microbial activity [41].…”

Section: Discussionsupporting

confidence: 91%

“…The application of sewage sludge compost, especially to soils with low organic matter and nutrients content, has attracted great interest, being a practice that couples the fertilization management to the virtuous recycling of valuable wastes under a perspective of circular economy. If it is well documented that long-term applications of composted wastes improve soil chemical and biological properties [1,2,40], as well as affect microbial population [41], our investigation targeted the possibility to demonstrate that even short-term amendments may contribute rapidly to improve soil fertility and, consequently, crop yields and quality. In literature, different doses of sewage sludge compost were tested, ranging from 3 to 12 Mg/ha, in a typical semiarid Mediterranean soil either to optimize the productivity, phenolic compounds, antioxidant activity and technological quality (protein content) of durum wheat or to maximize the morphometric and physiological growth parameters, grain yield and selected functional compounds of barley [42,43].…”

Section: Discussionmentioning

confidence: 99%

“…One of the main drawbacks of land application with municipal biosolids is the relevant increase in soil pH and electrical conductivity. On the other hand, a slight increase of soil pH may affect trace metals sorption on soil particles and their bioavailability for plant uptake; generally, lower pH values lead to increased bioavailability and potential toxicity in plants [41]. Moreover, pH may modulate microbial structure by controlling nutrients availability and enzymatic processes that are essential to microbial metabolism; it was shown that 1 pH-unit may considerably affect bacterial community structure and composition [44].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Short-Term Effects of Sewage Sludge Compost Amendment on Semiarid Soil

et al. 2020

View full text Add to dashboard Cite

The adoption of sewage sludge as an agricultural management strategy to improve soil properties and crop production is attracting great interest. Despite many positive effects on soil inorganic and organic components reported for different soil types, little information is available on sewage sludge application on Mediterranean soils, as well as on its use at different dose rates. The objectives of the present research was to evaluate, through an integrated approach, the effects of sewage sludge compost from urban wastewater on physicochemical, hydrological, biochemical parameters, and microbiota composition in soil pots under a three-year crop rotation system. Four different doses of sewage sludge compost (C3, C6, C9, C12) from municipal wastewater and a dose of them in combination with mineral fertilizer (C6N) were used. We have used 3-6-9-12 Mg/ha of sewage sludge compost for the treatments C3, C6, C9 and C12, respectively, and 6 Mg/ha of sewage sludge compost in combination with 60 kg/ha of ammonium nitrate for the treatment C6N.The effects were compared to non-fertilized (C0) and mineral fertilized (Min) sets of controls. The electrical conductivity, soil pH, stability of soil aggregates, percent of moisture of the dry soil both at the field capacity and at the wilting point, available P, and exchangeable K were all positively affected by increasing the amounts of composted sludge. The organic carbon and total N increased up to 66% and 39%, respectively. Increased enzymatic activities and microbial biomass were also observed in soil after the application of sewage sludge compost when compared to un-amended control. A higher richness and evenness among the soil plots amended with sewage sludge compost was observed, with no significant differences among the application dose rates, when compared to the un-amended soil control and soil treated with a mineral fertilizer. A three-year amendment was able to separate soil plots amended with high doses of sewage sludge compost from the low dose amended and control samples. Among the microbial groups responsible for such marked separation, bacteria belonging to Actinobacteria, Acidobacteria, Cyanobacteria and Bacteroidetes contribute the most, with a shift from oligotrophic to copiotrophic taxa. Significant changes in bacterial composition and taxonomic structure should be considered in order to properly balance agronomic and economic advantages with environmental concerns. After all, our results have evidenced the effects of sewage sludge amendment on different soil properties, microbial activity, and composition already after a short period of application. The findings are particularly relevant in semiarid soils, where an immediate restoration of soil fertility by short-term compost application is needed.

show abstract

Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Short-Term Effects of Sewage Sludge Compost Amendment on Semiarid Soil

et al. 2020

View full text Add to dashboard Cite

show abstract

“…On the other hand, in accordance with previous studies ( Lloret et al, 2016 ; Urra et al, 2019a ), the application of SS resulted in reduced soil microbial diversity, with potential negative consequence for soil functioning and resilience ( Delgado-Baquerizo et al, 2016 ). On the contrary, some authors found an increase in diversity in SS-amended soils ( Chen et al, 2016 ; Bai et al, 2019 ).…”

Section: Discussionmentioning

confidence: 90%

Agricultural Soils Amended With Thermally-Dried Anaerobically-Digested Sewage Sludge Showed Increased Risk of Antibiotic Resistance Dissemination

et al. 2021

View full text Add to dashboard Cite

The application of sewage sludge (SS) to agricultural soil can help meet crop nutrient requirements and enhance soil properties, while reusing an organic by-product. However, SS can be a source of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs), resulting in an increased risk of antibiotic resistance dissemination. We studied the effect of the application of thermally-dried anaerobically-digested SS on (i) soil physicochemical and microbial properties, and (ii) the relative abundance of 85 ARGs and 10 MGE-genes in soil. Soil samples were taken from a variety of SS-amended agricultural fields differing in three factors: dose of application, dosage of application, and elapsed time after the last application. The relative abundance of both ARGs and MGE-genes was higher in SS-amended soils, compared to non-amended soils, particularly in those with a more recent SS application. Some physicochemical parameters (i.e., cation exchange capacity, copper concentration, phosphorus content) were positively correlated with the relative abundance of ARGs and MGE-genes. Sewage sludge application was the key factor to explain the distribution pattern of ARGs and MGE-genes. The 30 most abundant families within the soil prokaryotic community accounted for 66% of the total variation of ARG and MGE-gene relative abundances. Soil prokaryotic α-diversity was negatively correlated with the relative abundance of ARGs and MGE-genes. We concluded that agricultural soils amended with thermally-dried anaerobically-digested sewage sludge showed increased risk of antibiotic resistance dissemination.

show abstract

“…During the health examination, we measured animals' body length and weight and also collected fecal samples from the intestine. Besides, a mixture of Chinese traditional herbs, Yunnan Baiyao (a famous Chinese patent medicine made of precious herbs, which can relieve blood stasis, promote blood circulation and ease pain and swelling [15]), and erythromycin ointment (the mixture of Yunnan Baiyao and erythromycin ointment in a ratio of 1 to 5) was applied to the wound site, and then drug coating was implemented for half an hour on a large suitable water-soaked sponge pad ( Table 2). Then, the animals were released back to water in a purse seine (the water surface area of about 500 m 2 ) Figure 1: The typical appearance of YFP before and after treatment.…”

Section: Background Of Animalsmentioning

confidence: 99%

Changes in the fecal microbiome of the Yangtze finless porpoise during a short-term therapeutic treatment

You

Ying

et al. 2020

Open Life Sciences

View full text Add to dashboard Cite

AbstractThe fecal microbiome is an integral part of aquatic mammals, like an inner organ. But we know very little about this inner organ of the threatened aquatic species, Yangtze finless porpoise (YFP). Four YFPs were placed into a purse seine for skin ulceration treatment, and this opportunity was taken to nurse the animals closer. In particular, we collected the feces of the YFPs before and after the paired healing and therapeutic treatment, along with samples of their fish diet and water habitat, to explore the changes in their fecal microbiome. Firmicutes (20.9–96.1%), Proteobacteria (3.8–78.7%), Actinobacteria (0.1–35.0%) and Tenericutes (0.8–17.1%) were the most dominant phyla present in the feces. The proportion of Proteobacteria and Actinobacteria increased after the treatment. Firmicutes showed a significant decrease, and most potential pathogens were absent, which reflected the administration of ciprofloxacin hydrochloride. Moreover, environmental shifts can also contribute to changes in the fecal microbiome. These results indicate that certain microbial interactions can be affected by environmental shifts, dietary changes and health-care treatments, which can also help maintain the internal environment of YFPs. These findings will inform the future enhanced protection and management of endangered YFPs and other vulnerable aquatic animals.

show abstract

Response of bacterial communities in coastal mudflat saline soil to sewage sludge amendment

Cited by 45 publications

References 25 publications

Short-Term Effects of Sewage Sludge Compost Amendment on Semiarid Soil

Short-Term Effects of Sewage Sludge Compost Amendment on Semiarid Soil

Agricultural Soils Amended With Thermally-Dried Anaerobically-Digested Sewage Sludge Showed Increased Risk of Antibiotic Resistance Dissemination

Changes in the fecal microbiome of the Yangtze finless porpoise during a short-term therapeutic treatment

Contact Info

Product

Resources

About