Effects of nightly warming and nitrogen application on the diversity of soil fungi in winter wheat in the lower reach of the Yangtze River

Jing, Liu; Long, Zhiwei; Zhang, Jun; Chen, Chang

doi:10.1080/03650340.2020.1858477

Cited by 3 publications

(5 citation statements)

References 27 publications

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“…The observations of decreased fungal abundance and the fungi-to-bacteria ratio under daytime warming in the long term do not agree with our Hypothesis 2 and previous findings that nighttime warming increases fungal diversity and changes microbial composition and C use efficiency [8,19,21]. Two potential mechanisms may account for the daytime warming-induced reduction in fungal abundance.…”

Section: Asymmetrically Diurnal Warming On Soil Microbial Compositioncontrasting

confidence: 98%

“…Nighttime warming-induced overcompensation of plant photosynthesis and consequent C assimilation may supply more C sources for microbial growth and activity [8,20]. In addition, the enhanced nitrogen availability and organic matter decomposition rate under nighttime warming can intensify the competition for limited nutrients between plants and soil microorganisms, leading to an increase in fungal diversity, or reductions in bacterial abundance and C use efficiency [8,21]. However, our understanding of the effects of asymmetrically diurnal warming on soil microbial communities is mainly based on some short-term (less than 5 years) field experiments, and little is known about microbial feedbacks to long-term daytime and nighttime warming.…”

Section: Introductionmentioning

confidence: 99%

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Long-Term Daytime Warming Rather Than Nighttime Warming Alters Soil Microbial Composition in a Semi-Arid Grassland

Feng

Song

et al. 2023

Biology

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Climate warming has profoundly influenced community structure and ecosystem functions in the terrestrial biosphere. However, how asymmetric rising temperatures between daytime and nighttime affect soil microbial communities that predominantly regulate soil carbon (C) release remains unclear. As part of a decade-long warming manipulation experiment in a semi-arid grassland, we aimed to examine the effects of short- and long-term asymmetrically diurnal warming on soil microbial composition. Neither daytime nor nighttime warming affected soil microbial composition in the short term, whereas long-term daytime warming instead of nighttime warming decreased fungal abundance by 6.28% (p < 0.05) and the ratio of fungi to bacteria by 6.76% (p < 0.01), which could be caused by the elevated soil temperature, reduced soil moisture, and increased grass cover. In addition, soil respiration enhanced with the decreasing fungi-to-bacteria ratio, but was not correlated with microbial biomass C during the 10 years, indicating that microbial composition may be more important than biomass in modulating soil respiration. These observations highlight the crucial role of soil microbial composition in regulating grassland C release under long-term climate warming, which facilitates an accurate assessment of climate-C feedback in the terrestrial biosphere.

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Section: Asymmetrically Diurnal Warming On Soil Microbial Compositioncontrasting

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Long-Term Daytime Warming Rather Than Nighttime Warming Alters Soil Microbial Composition in a Semi-Arid Grassland

Feng

Song

et al. 2023

Biology

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“…However, we did not find such a result in our experiments, mainly due to the warming time and intensity [39]. Liu et al [28] showed that the interaction between warming and nitrogen application played a significant role in the changes in the soil nitrate nitrogen content, which was consistent with the results of this study.…”

Section: Effects Of Nighttime Warming and Nitrogen Application On Soi...supporting

confidence: 91%

“…Warming visibly i the soil ammonium nitrogen content, which might be because the increase in tem increased the soil mineralization and nutrient conversion rate [35,36], but with e warming times, the rate of this mineralization shows a downwards trend [37] have shown that long-term warming accelerates the decomposition of soil organi leading to a decrease in the organic matter content of the soil [38]. However, w find such a result in our experiments, mainly due to the warming time and inten Liu et al [28] showed that the interaction between warming and nitrogen ap played a significant role in the changes in the soil nitrate nitrogen content, w consistent with the results of this study.…”

Section: Effects Of Nighttime Warming and Nitrogen Application On Soi...contrasting

confidence: 56%

“…Wheat is one of the most important food crops in the world. Research on the effects of temperature or fertilization on wheat generally focus on crop growth and yield, and there are very few studies on soil nutrient and microbial properties [28], which would have deep effects on microbial activity, community composition, and ecosystem function. Moreover, most studies on the impacts of climate change on soil microbes have examined single-factor manipulations [17]; the interactive effects of warming and nitrogen application have rarely been reported.…”

Section: Introductionmentioning

confidence: 99%

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Responses of Bacterial Communities in Soils under Winter Wheat to Nightly Warming and Nitrogen Addition

Wei

Peng

et al. 2022

Agronomy

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Understanding soil bacterial diversity under global warming is necessary because of its crucial role in soil nitrogen cycling. However, the interaction effect of warmer temperatures and nitrogen application on bacterial communities in the soils of winter wheat fields is unclear. In this study, the air temperature was increased with infrared heating, and this heating treatment was combined with nitrogen fertilizer application. The two-year continuous temperature increase significantly decreased the soil’s pH and nitrate nitrogen content, but significantly increased the content of soil available nutrients. Warming changed the community structure of the soil bacteria, and significantly increased the bacterial richness and diversity by 17.77% and 3.52%, respectively. The changes in the physical and chemical properties of the soil caused by the increased nighttime temperature decreased the percentage abundance of Pseudomonadota, which is the largest bacterial phylum, and plays an important role in the global carbon, sulfur, and nitrogen cycles. The structural equation model demonstrated that the influence of soil temperature on bacterial diversity was mediated through soil moisture. Nitrogen application rate directly affected soil bacterial diversity and was the most significant parameter influencing bacterial diversity.

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Response of soil fungal community in winter wheat to warming and fertilization regimes

Han,

Yang,

Liu

et al. 2023

Preprint

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Understanding soil fungal diversity under global warming is significant for the assessment of climate change impacts on soil health and soil nutrient transformation. The interaction effect of warmer temperatures and fertilization regimes on fungal communities in the soils of winter wheat fields is unclear. Two-year potting experiments were conducted under nighttime warming and different fertilization regimes. The two-year continuous temperature increase significantly decreased the soil’s pH. Warming and fertilization did not significantly change the dominant fungal phyla in the soil. However, it significantly increased the soil fungal richness and diversity compared with no warming and no fertilization. Warming increased richness and diversity by 4.15% and 4.24%, respectively, and fertilization increased richness and diversity by 14.15% and 4.27%, respectively. Furthermore, warming significantly increased the relative abundance of Fusarium, which is the causal agent of winter wheat weat root rot, from 1.75–3.62%. However, fertilization reduced the relative abundance of Fusarium, especially under the combined application of organic and inorganic fertilizers, suggesting that organic manure addition could impair soil fungal pathogens under future warming. The structural equation model demonstrated that the influence of soil temperature on fungal diversity was direct and mediated through soil carbon nitrogen ratios. Soil temperature and soil organic matter directly affected soil fungal diversity and were the most significant parameters influencing fungal diversity.

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Effects of nightly warming and nitrogen application on the diversity of soil fungi in winter wheat in the lower reach of the Yangtze River

Cited by 3 publications

References 27 publications

Long-Term Daytime Warming Rather Than Nighttime Warming Alters Soil Microbial Composition in a Semi-Arid Grassland

Long-Term Daytime Warming Rather Than Nighttime Warming Alters Soil Microbial Composition in a Semi-Arid Grassland

Responses of Bacterial Communities in Soils under Winter Wheat to Nightly Warming and Nitrogen Addition

Response of soil fungal community in winter wheat to warming and fertilization regimes

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