Elevated CO2 and Nitrogen Supply Boost N Use Efficiency and Wheat (T. aestivum cv. Yunmai) Growth and Differentiate Soil Microbial Communities Related to Ammonia Oxidization

文献类型： 外文期刊

第一作者： Dong, Xingshui

作者： Dong, Xingshui;Shi, Songmei;Sharifi, Sharifullah;Wang, Shuai;He, Xinhua;Lin, Hui;Wang, Feng;Ma, Junwei;He, Xinhua;He, Xinhua

作者机构：

关键词： nitrogen accumulation; Nitrosomonadaceae; Nitrosospira; Nitrosomonas; Triticum aestivum L.

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 17 期

页码：

收录情况： SCI

摘要： Elevated CO2 levels (eCO(2)) pose challenges to wheat (Triticum aestivum L.) growth, potentially leading to a decline in quality and productivity. This study addresses the effects of two ambient CO2 concentrations (aCO(2), daytime/nighttime = 410/450 +/- 30 ppm and eCO(2), 550/600 +/- 30 ppm) and two nitrogen (N) supplements (without N supply-N0 and with 100 mg N supply as urea per kg soil-N100) on wheat (T. aestivum cv. Yunmai) growth, N accumulation, and soil microbial communities related to ammonia oxidization. The data showed that the N supply effectively mitigated the negative impacts of eCO(2) on wheat growth by reducing intercellular CO2 concentrations while enhancing photosynthesis parameters. Notably, the N supply significantly increased N concentrations in wheat tissues and biomass production, thereby boosting N accumulation in seeds, shoots, and roots. eCO(2) increased the agronomic efficiency of applied N (AE(N)) and the physiological efficiency of applied N (PEN) under N supply. Plant tissue N concentrations and accumulations are positively related to plant biomass production and soil NO3--N. Additionally, the N supply increased the richness and evenness of the soil microbial community, particularly Nitrososphaeraceae, Nitrosospira, and Nitrosomonas, which responded differently to N availability under both aCO(2) and eCO(2). These results underscore the importance and complexity of optimizing N supply and eCO(2) for enhancing crop tissue N accumulation and yield production as well as activating nitrification-related microbial activities for soil inorganic N availability under future global environment change scenarios.

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