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
作者： Dong, Xingshui 1 ; Lin, Hui 2 ; Wang, Feng 2 ; Shi, Songmei 1 ; Sharifi, Sharifullah 1 ; Wang, Shuai 1 ; Ma, Junwei 2 ; He, Xinhua 1 ;
作者机构： 1.Southwest Univ, Ctr Excellence Soil Biol, Sch Resource & Environm, Chongqing 400715, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizers, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
3.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 90616 USA
4.Univ Western Australia, Sch Biol Sci, Perth 6009, Australia
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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