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Diurnal dynamics can modify plant-microbial competition for N uptake via C allocation
Liu, Min1,2; Xu, Xingliang1,3; Nannipieri, Paolo4; Kuzyakov, Yakov1,5,6; Gunina, Anna7,8
2021-07-13
Source PublicationBIOLOGY AND FERTILITY OF SOILS
ISSN0178-2762
Pages10
Corresponding AuthorXu, Xingliang(xuxingl@hotmail.com) ; Gunina, Anna(guninaann@gmail.com)
AbstractPlant-microbial competition for N in the rhizosphere affects net primary production and N cycling, and depends on plant physiological factors, including photosynthesis and transpiration. Here, we studied the diurnal competition for N between plants and microorganisms and quantified plant C allocation by maize (Zea mays) and wheat (Triticum aestivum) in a nutrient-poor soil. In situ concurrent pulse (NO3-)-N-15 and (CO2)-C-13 labeling was carried out to trace the N uptake from the soil and C allocation to plant-microorganisms-soil system in the first 12 and 24 h after labeling, corresponding to daytime and nighttime. Plants outcompeted microorganisms for NO3- uptake from the rhizosphere during daytime and nighttime. Diurnal dynamics had a low effect on microbial NO3- uptake, which varied between 7 and 15% of added N for maize and between 3 and 6% of added N for wheat after the first 12 and 24 hours. NO3- uptake by maize was not affected by diurnal dynamics, but NO3- uptake by wheat was higher during daytime than that during nighttime. The C-13 allocation to plants and microorganisms was similar between daytime and nighttime. N utilization was closely related to photosynthate partitioning in plant shoots and roots, indicating coupling between C allocation and N utilization. These findings indicate that plants grown in nutrient-poor soils (as used in this study) dominate over microorganisms for N uptake and release newly photosynthesized C for rhizosphere microorganisms. The diurnal dynamics of these plant-microbial interactions are plant species-specific: important for wheat but irrelevant for maize.
KeywordDiurnal plant-microbial interactions C-13 and (15) N dual labeling N-15 recovery Microorganisms Newly assimilated C Rhizosphere processes
DOI10.1007/s00374-021-01585-x
WOS KeywordORGANIC-NITROGEN ; SOIL MICROBES ; INORGANIC NITROGEN ; EXTRACTION METHOD ; NITRATE UPTAKE ; NO3-UPTAKE ; K+ UPTAKE ; RHIZOSPHERE ; MICROORGANISMS ; GROWTH
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41877089] ; China Scholarship Council (CSC) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation[19-77-30012]
Funding OrganizationNational Natural Science Foundation of China ; China Scholarship Council (CSC) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000673050600002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163840
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Xingliang; Gunina, Anna
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Univ Florence, Dept Agr Food Environm & Forest Sci & Technol, Ple Cascine 28, I-50144 Florence, Italy
5.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, Busgenweg 2, D-37077 Gottingen, Germany
6.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia
7.Univ Kassel, Dept Environm Chem, D-37213 Witzenhausen, Germany
8.Tyumen State Univ, 6 Volodarskogo St, Tyumen 625003, Russia
Recommended Citation
GB/T 7714
Liu, Min,Xu, Xingliang,Nannipieri, Paolo,et al. Diurnal dynamics can modify plant-microbial competition for N uptake via C allocation[J]. BIOLOGY AND FERTILITY OF SOILS,2021:10.
APA Liu, Min,Xu, Xingliang,Nannipieri, Paolo,Kuzyakov, Yakov,&Gunina, Anna.(2021).Diurnal dynamics can modify plant-microbial competition for N uptake via C allocation.BIOLOGY AND FERTILITY OF SOILS,10.
MLA Liu, Min,et al."Diurnal dynamics can modify plant-microbial competition for N uptake via C allocation".BIOLOGY AND FERTILITY OF SOILS (2021):10.
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