Warmer and drier conditions alter the nitrifier and denitrifier communities and reduce N2O emissions in fertilized vegetable soils

Xu, Xiaoya; Yu, Ran; Li, Yong; Zhang, Qichun; Liu, Yapeng; Pan, Hong; Guan, Xiaoxu; Li, Jiangye; Shi, Jiachun; Li, Dong; Li, Zheng; Di, Hongjie; Xu, Jianming

doi:10.1016/j.agee.2016.06.026

Cited by 50 publications

(16 citation statements)

References 45 publications

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“…Similar to our findings, the denitrifying microbes harbouring the nirK and nosZ genes may play a predominant functional role in denitrification in such farmland and plant‐focussed restoration systems. This result is consistent with previous studies showing that gene abundances (i.e., nirK and nosZ genes) can serve as integrative ecological variables to predict and explain the dynamics of PDR (Petersen et al, ; Xu et al, ).…”

Section: Discussionsupporting

confidence: 93%

Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes

et al. 2020

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Ecological restorations of abandoned farmland have been performed in degraded ecosystems with the goal of increasing ecosystem sustainability. The environmental benefits of ecological restoration can at least be partially neutralized by enhanced nitrogen (N) loss and potential nitrous oxide (N 2 O) emissions via denitrification. However, few studies have focussed on comparative analysis of the contributions of ecological resto-

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Section: Discussionsupporting

confidence: 93%

Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes

et al. 2020

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“…Although the warming caused a drier condition and that condition could be restrictive to AOB growth ( Chen et al, 2013 ), the AOB abundance was higher in warmed plot than in control, which might be due to the adaptive tendency of AOB to drier conditions. This result supported by Xu et al (2016) , who showed that under the simulated warmer and drier condition, the AOB community displayed rapid and significantly higher growth rate than that of AOA, with the population abundance being one order of magnitude higher than the control. Moreover, the previous study found that soil warming for +0–5 °C significantly increased the AOB abundance under N fertilization in boreal forest soil ( Long et al, 2012 ).…”

Section: Discussionsupporting

confidence: 72%

“…The decreased ratio of AOA to AOB in the warmed plot was mainly due to the increase in AOB growth at elevated soil temperature. The previous study also indicated that the ratio of AOA to AOB significantly decreased under the warmer and drier condition ( Xu et al, 2016 ), which corroborated that the AOB community more rapidly adapted to the warmer and drier condition than did AOA community.…”

Section: Discussionsupporting

confidence: 61%

“…In the previous study, Rui et al (2015) also found a low abundance of Nitrospira at a high temperature. The lower abundance of Nitrospira could be due to its sensitivity to drier conditions and, also outcompetition with other AOB species (i.e., Nitrosomonas ) under high oxygen and substrate (NO 3 - ) concentrations ( Xu et al, 2016 ). Compared with AOB, the relative abundance of AOA was slightly lower in the warmed than the control plots.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, warming is responsible for moderate natural drought and decreased microbial diversity, with significant changes in community composition ( Sheik et al, 2011 ). Xu et al (2016) reported that simulated warming and drying conditions are responsible for altering the nitrifier and denitrifier community in vegetable soil. However, these field experiments mainly focused on grasslands, grass prairies, alpine forest, and vegetable soil to explain how the community composition of N cycling microorganisms was altered by simulated warming.…”

Section: Introductionmentioning

confidence: 99%

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Response of Nitrifier and Denitrifier Abundance and Microbial Community Structure to Experimental Warming in an Agricultural Ecosystem

Waghmode

Chen

et al. 2018

Front. Microbiol.

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Soil microbial community plays an important role in terrestrial carbon and nitrogen cycling. However, the response of the soil nitrifier and denitrifier communities to climate warming is poorly understood. A long-term field warming experiment has been conducted for 8 years at Luancheng Experimental Farm Station on the North China Plain; we used this field to examine how soil microbial community structure, nitrifier, and denitrifier abundance respond to warming under regular irrigation (RI) and high irrigation (HI) at different soil depths (0-5, 5-10, and 10-20 cm). Nitrifier, denitrifier, and the total bacterial abundance were assessed by quantitative polymerase chain reaction of the functional genes and 16S rRNA gene, respectively. Bacterial community structure was studied through high throughput sequencing of the 16S rRNA gene. Under RI, warming significantly (P < 0.05) increased the potential nitrification rate and nitrate concentration and decreased the soil moisture. In most of the samples, warming increased the ammonia-oxidizing bacteria abundance but decreased the ammonia-oxidizing archaea (AOA) and denitrifier (nirK, nirS, and nosZ genes) abundance. Under HI, there was a highly increased AOA and 16S rRNA gene abundance and a slightly higher denitrifier abundance compared with RI. Warming decreased the bacterial diversity and species richness, and the microbial community structure differed greatly between the warmed and control plots. The decrease in bacterial diversity was higher in RI than HI and at the 0-5 cm depths than at the 5-10 and 10-20 cm soil depths. Warming led to an increase in the relative abundance of Actinobacteria, Bacteroidetes, and TM7 but a decrease in Acidobacteria, Alphaproteobacteria, Deltaproteobacteria, Nitrospira, and Planctomycetes. The greater shift in microbial community structure was observed only in RI at the 0-5 cm soil depth. This study provides new insight into our understanding of the nitrifier and denitrifier activity and microbial community response to climate warming in agricultural ecosystems.

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Potentilla parvifolia strongly influenced soil microbial community and environmental effect along an altitudinal gradient in central Qilian Mountains in western China

Cheng,

Song,

et al. 2023

Ecology and Evolution

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The Qilian Mountains (QLMs) form an important ecological security barrier in western China and a priority area for biodiversity conservation. Potentilla parvifolia is a widespread species in the mid‐high altitudes of the QLMs and has continuously migrated to higher altitudes in recent years. Understanding the effects of P. parvifolia on microbial community characteristics is important for exploring future changes in soil biogeochemical processes in the QLMs. This study found that P. parvifolia has profound effects on the community structure and ecological functions of soil microorganisms. The stability and complexity of the root zone microbial co‐occurrence network were significantly higher than those of bare soils. There was a distinct altitudinal gradient in the effect of P. parvifolia on soil microbial community characteristics. At an elevation of 3204 m, P. parvifolia promoted the accumulation of carbon, nitrogen, and phosphorus and increased sucrase activity and soil C/N while significantly improving the community richness index of fungi (p < .05) compared with that of bacteria and the relative abundance of Ascomycota. The alpha diversity of fungi in the root zone soil of P. parvifolia was also significantly increased at 3550 m altitude. Furthermore, the community similarity distance matrix of fungi showed an evident separation at 3204 m. However, at an altitude of 3750 m, P. parvifolia mainly affected the bacterial community. Potentilla parvifolia increased the bacterial community richness. This is in agreement with the findings based on the functional prediction that P. parvifolia favors the growth and enrichment of denitrifying communities at 3550 and 3750 m. The results provide a scientific basis for predicting the evolutionary trends of the effects of P. parvifolia on soil microbial communities and functions and have important implications for ecological governance in the QLMs.

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Warmer and drier conditions alter the nitrifier and denitrifier communities and reduce N2O emissions in fertilized vegetable soils

Cited by 50 publications

References 45 publications

Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes

Passive and active ecological restoration strategies for abandoned farmland leads to shifts in potential soil nitrogen loss by denitrification and soil denitrifying microbes

Response of Nitrifier and Denitrifier Abundance and Microbial Community Structure to Experimental Warming in an Agricultural Ecosystem

Potentilla parvifolia strongly influenced soil microbial community and environmental effect along an altitudinal gradient in central Qilian Mountains in western China

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