Metabolism characteristics of nitrogen functional microorganisms in bioretention system under multiple dry-wet alternation

Wu, Qingyu; Tang, Yinghui; Chen, Renyu; Xu, Fei; Wu, Qiong; He, Ya‐Ling; Xiao, Wenyu; Li, Juncheng; Liu, Zhen; Chen, Yao

doi:10.1016/j.jwpe.2023.103685

Cited by 11 publications

(1 citation statement)

References 63 publications

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“…Nitrogen is one of the most important nutrients affecting the growth of crops and micro-organisms [3], and different forms of nitrogen undergo a complex transformation process in the soil environment [4]. It has been shown that soil nitrogen transformation is influenced by numerous environmental factors such as moisture [5], temperature [6], reactive substrates [7,8], organic matter (OM) [9,10], pH [11], among others. Most scholars proved that soil micro-organisms related to the nitrogen cycle play a major role in regulating nitrogen transformation processes, including mineralization, nitrification, denitrification and fixation [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Manures in Combination with Fulvic Acid on the Abundance of N-Cycling Functional Genes in Greenhouse Soils

Zhao,

Li,

Liu

et al. 2023

Agriculture

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To investigate the effects of different manures in combination with fulvic acid on the abundance of N-cycling functional genes in greenhouse soils, Chinese cabbage was planted for three growing seasons. A total of six treatments—pig manure (P), pig manure + fulvic acid (PH), chicken manure (C), chicken manure + fulvic acid (CH), sheep manure (S), sheep manure + fulvic acid (SH) and no fertilization (CK)—were set up. The abundance of 13 soil N-cycling functional genes (gdhA, amoA-1, amoA-2, amoB, narG, nirK-1, nirK-2, nirK-3, nirS-1, nirS-2, nirS-3, nosZ and nifH) were investigated after the harvest of the third growing season using a gene chip approach. The results showed that fertilization treatments increased the abundance of most N-cycling functional genes in the soil, such as nitrification genes amoA-2 and amoB as well as denitrification genes narG, nirK-1, nirS-1 and nirS-2, with the stronger influence of sheep and pig manure than chicken manure. Fortunately, the additional fulvic acid reduced the increasing effect resulting from pig, chicken and sheep manure application. The abundance of functional genes for nitrogen cycling in soil was positively correlated with the content of soil organic matter, available phosphorus and NO3−-N, and negatively correlated with electrical conductivity. Overall, fertilization treatments increased soil nitrification and denitrification genes abundance, with a risk of increasing soil nitrogen loss, but the supplementary fulvic acid could limit the increase. In this study, it was concluded that the sheep manure (31.3 t/ha) + fulvic acid (7.5 kg/ha) treatment was more powerful in regulating the abundance of N-cycling functional genes in soil.

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Section: Introductionmentioning

confidence: 99%

Effects of Different Manures in Combination with Fulvic Acid on the Abundance of N-Cycling Functional Genes in Greenhouse Soils

Zhao,

Li,

Liu

et al. 2023

Agriculture

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Mechanisms underlying the interactions and adaptability of nitrogen removal microorganisms in freshwater sediments

Zhang,

Yu,

et al. 2024

Adv. Biotechnol.

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Microorganisms in eutrophic water play a vital role in nitrogen (N) removal, which contributes significantly to the nutrient cycling and sustainability of eutrophic ecosystems. However, the mechanisms underlying the interactions and adaptation strategies of the N removal microorganisms in eutrophic ecosystems remain unclear. We thus analyzed field sediments collected from a eutrophic freshwater ecosystem, enriched the N removal microorganisms, examined their function and adaptability through amplicon, metagenome and metatranscriptome sequencing. We found that the N removal activities could be affected through potential competition and inhibition among microbial metabolic pathways. High-diversity microbial communities generally increased the abundance and expression of N removal functional genes. Further enrichment experiments showed that the enrichment of N removal microorganisms led to a development of simplified but more stable microbial communities, characterized by similar evolutionary patterns among N removal microorganisms, tighter interactions, and increased adaptability. Notably, the sustained provision of NH4+ and NO2− during the enrichment could potentially strengthen the interconnections among denitrification, anaerobic ammonium oxidation (anammox) and dissimilatory nitrate reduction to ammonium (DNRA) processes. Moreover, the identification of shared metabolic traits among denitrification, anammox and DNRA implies important cooperative associations and adaptability of N removal microorganisms. Our findings highlight the microbial interactions affect the adaptive strategies of key microbial taxa involved in N removal.

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Enhancing bioretention efficiency for pollutant mitigation in stormwater runoff: Exploring ecosystem cycling dynamics amidst temporal variability

Chen,

Zhang,

Zheng

et al. 2024

Bioresource Technology

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Metabolism characteristics of nitrogen functional microorganisms in bioretention system under multiple dry-wet alternation

Cited by 11 publications

References 63 publications

Effects of Different Manures in Combination with Fulvic Acid on the Abundance of N-Cycling Functional Genes in Greenhouse Soils

Effects of Different Manures in Combination with Fulvic Acid on the Abundance of N-Cycling Functional Genes in Greenhouse Soils

Mechanisms underlying the interactions and adaptability of nitrogen removal microorganisms in freshwater sediments

Enhancing bioretention efficiency for pollutant mitigation in stormwater runoff: Exploring ecosystem cycling dynamics amidst temporal variability

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