Inoculation of phosphate-solubilizing bacteria (Bacillus) regulates microbial interaction to improve phosphorus fractions mobilization during kitchen waste composting

Zhang, Xinjun; Zhan, Yabin; Zhang, Hao; Wang, Ruihong; Tao, Xingling; Zhang, Liping; Zuo, Yilin; Zhang, Lei; Wei, Yuquan; Ji, Li

doi:10.1016/j.biortech.2021.125714

Cited by 59 publications

(19 citation statements)

References 41 publications

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“…Possibly, Bacillus sp. could effectively stimulate the growth of reducing microorganisms and reduce the dissolution of uranium, thereby changing the structure of the microbial community [49]. This result was consistent with the bacterial community analysis, where the functional bacteria richness in the treatment group was significantly higher than in the control group.…”

Section: Microbial Community Structuressupporting

confidence: 85%

Response and Dynamic Change of Microbial Community during Bioremediation of Uranium Tailings by Bacillus sp.

Tang

Zhong

et al. 2021

Minerals

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Bacillus sp. is widely used in the remediation of uranium-contaminated sites. However, little is known about the competitive process of microbial community in the environment during bioremediation. The bioremediation of uranium tailings using Bacillus sp. was explored, and the bacterial community was analyzed by high-throughput sequencing at different stages of remediation. Bacillus sp. reduced the leaching of uranium from uranium tailings. The lowest uranium concentration was 17.25 μg/L. Alpha diversity revealed that the abundance and diversity of microorganisms increased with the extension of the culture time. The microbial abundance and diversity were higher in the treatment group than in the control group. The dominant species at the phyla level were Firmicutes and Proteobacteria in the uranium tailings environment, whereas the phylum of Proteobacteria was significantly increased in the treatment group. Based on the genus level, the proportions of Arthrobacter, Rhodococcus and Paenarthrobacter decreased significantly, whereas those of Clostridium sp., Bacillus and Pseudomonas increased dramatically. Hence, the remediation of uranium contamination in the environment was due to the functional microorganisms, which gradually became the dominant strain in the treatment, such as Desulfotomaculum, Desulfosporporosinus, Anaerocolumna, Ruminiclostridium and Burkholderia. These findings provided a promising outlook of the potential for remediation strategies of soil contaminated by uranium. The dynamic characteristics of the microbial community are likely to provide a foundation for the bioremediation process in practice.

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Section: Microbial Community Structuressupporting

confidence: 85%

Response and Dynamic Change of Microbial Community during Bioremediation of Uranium Tailings by Bacillus sp.

Tang

Zhong

et al. 2021

Minerals

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“…As the accumulated time of Zn fertilizer increases, more microorganisms will become dominant species, thereby lowering the evenness index. After that, competition among the dominant microorganisms may further accelerate the extinction of some bacteria ( Zhang et al, 2021 ), thus decreasing the richness index. The average size of networks (n) decreased after Zn application, in accordance with diversity, but the average links and average connectivity (avgK) increased.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the production of biological fertilizers containing beneficial microorganisms may be an effective alternative to chemical fertilizers. In addition, potential interactions were found among bacterial communities, soil chemical properties, and crop growth status, which affected soil fertility and nutrient resorption characteristics of rice, leading to grain yield and Zn content variations in rice ( Wang et al, 2021 ; Zhang et al, 2021 ). However, soil microorganisms are also shaped by many factors, such as farming manipulation, plant varieties, and soil nutrition ( Berg and Smalla, 2009 ; Hartman et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Microbial mechanism of zinc fertilizer input on rice grain yield and zinc content of polished rice

et al. 2022

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Zinc is an essential minor element for rice growth and human health, which can also change the structure of the microorganisms. However, it remains unclear for the effects of zinc fertilizer on microbiome function in agricultural soils and crops. To solve this research gap, we investigated the relationship between improving rice (Oryza sativa L.) yield, Zn concentration, soil microbial community diversity, and function by the application of Zn fertilizer. The field trials included three rice varieties (Huanghuazhan, Nanjing9108, and Nuodao-9925) and two soil Zn levels (0 and 30 kg ha–1) in Jiangsu province, China. As a test, we studied the variety of soil bacterial composition, diversity, and function using 16S rRNA gene sequencing. The results showed that soil Zn application reduced the diversity of microbial community, but the bacterial network was more closely linked, and the metabolic function of bacterial community was improved, which increased the grain yield (17.34–19.52%) and enriched the Zn content of polished rice (1.40–20.05%). Specifically, redundancy analysis (RDA) and Mantel’s test results revealed soil total nitrogen (TN) was the primary driver that led to a community shift in the rice rhizosphere bacterial community, and soil organic carbon (SOC) was considered to have a strong influence on dominant phyla. Furthermore, network analysis indicated the most critical bacterial taxa were identified as Actinobacteria, Bacteroidetes, Proteobacteria, and Chloroflexi based on their topological roles of microorganisms. KEGG metabolic pathway prediction demonstrated that soil Zn application significantly (p < 0.05) improved lipid metabolism, amino acid metabolism, carbohydrate metabolism, and xenobiotic biodegradation. Overall, their positive effects were different among rice varieties, of which Nanjing-9108 (NJ9108) performed better. This study opens new avenues to deeply understand the plant and soil–microbe interactions by the application of fertilizer and further navigates the development of Zn-rich rice cultivation strategies.

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“…Mucilaginibacter is known for the degradation of cellulose and hemicellulose (López-mondéjar et al, 2016) while Streptomyces from a disease-suppressive soil produced volatile organic compounds (Cordovez et al, 2015). Bacillus with P solubilizing function may be a potential inoculant to regulate the biotic process of P transformation (Zhang, et al, 2021). Pseudomonas resistance against pathogen growth improves P cycling and also serves as inorganic P solubilizing bacteria that can be cultured (Jones and Oburger, 2011;Panpatte et al, 2016).…”

Section: Effects Of Different P Fertilizer Reduction Systems On Soil ...mentioning

confidence: 99%

Response of Soil Microbial Community Structure to Phosphate Fertilizer Reduction and Combinations of Microbial Fertilizer

Liu

Qiang

et al. 2022

Front. Environ. Sci.

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The excessive application of phosphorus (P) fertilizer is becoming a major agricultural problem, which reduces the utilization rate of the P fertilizer and degrades soil quality. The following five P fertilizer treatments were investigated to know how they affect soil properties, enzyme activity, bacterial and fungal community structure. 1) no P fertilizer (P0); 2) farmers’ traditional P fertilization scheme (FP); 3) 30% reduction in P fertilizer application (P1, microbial blended fertilizer as base fertilizer); 4) 30% reduction in P fertilizer application (P2, diammonium phosphate as starting fertilizer); 5) 30% reduction in P fertilizer application (P3, microbial inoculum seed dressing). The P fertilizer reduction combined with microbial fertilizer significantly increased soil organic matter (SOM), total phosphorus (TP), available phosphorus (AP) available potassium (AK) contents, and acid phosphatase activity (ACP), however, soil urease activity was significantly reduced. Moreover, the P fertilizer reduction combined with microbial fertilizer significantly increased the relative abundance of a potential beneficial genus (i.e., Bacillus, Pseudomonas, Penicillium, and Acremonium) and potentially pathogenic genus (i.e., Fusarium, Gibberella, and Drechslera). The structural equation model (SEM) revealed that different P fertilizer reduction systems had significant indirect effects on bacterial and fungal community structures. The results suggested that the P fertilizer reduction combined with microbial fertilizer systems regulated the pathogenic and beneficial genus which created a microbial community that is favorable for maize growth. Moreover, the findings highlighted the importance of soil properties in determining the soil bacterial and fungal community structure.

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Inoculation of phosphate-solubilizing bacteria (Bacillus) regulates microbial interaction to improve phosphorus fractions mobilization during kitchen waste composting

Cited by 59 publications

References 41 publications

Response and Dynamic Change of Microbial Community during Bioremediation of Uranium Tailings by Bacillus sp.

Response and Dynamic Change of Microbial Community during Bioremediation of Uranium Tailings by Bacillus sp.

Microbial mechanism of zinc fertilizer input on rice grain yield and zinc content of polished rice

Response of Soil Microbial Community Structure to Phosphate Fertilizer Reduction and Combinations of Microbial Fertilizer

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