Nitrogen acquisition by plants and microorganisms in a temperate grassland
Liu, QY; Qiao, N; Xu, XL; Xin, XP; Han, JY; Tian, YQ; Ouyang, H; Kuzyakov, Y
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Pages:-
AbstractNitrogen (N) limitation is common in most terrestrial ecosystems, often leading to strong competition between microorganisms and plants. The mechanisms of niche differentiation to reduce this competition remain unclear. Short-term N-15 experiments with NH4+, NO3-, and glycine were conducted in July, August and September in a temperate grassland to evaluate the chemical, spatial and temporal niche differentiation by competition between plants and microorganisms for N. Microorganisms preferred NH4+ and NO3-, while plants preferred NO3-. Both plants and microorganisms acquired more N in August and September than in July. The soil depth had no significant effects on microbial uptake, but significantly affected plant N uptake. Plants acquired 67% of their N from the 0-5 cm soil layer and 33% from the 5-15 cm layer. The amount of N taken up by microorganisms was at least seven times than plants. Although microorganisms efficiently compete for N with plants, the competition is alleviated through chemical partitioning mainly in deeper soil layer. In the upper soil layer, neither chemical nor temporal niche separation is realized leading to strong competition between plants and microorganisms that modifies N dynamics in grasslands.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordSOIL-MICROORGANISMS ; INORGANIC NITROGEN ; ORGANIC-NITROGEN ; INNER-MONGOLIA ; AMINO-ACIDS ; COMPETITION ; MICROBES ; DIVERSITY ; NUTRIENTS ; AMMONIUM
Indexed BySCI
Language英语
WOS IDWOS:000371683200001
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44262
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Liu, QY,Qiao, N,Xu, XL,et al. Nitrogen acquisition by plants and microorganisms in a temperate grassland[J]. SCIENTIFIC REPORTS,2016,6:-.
APA Liu, QY.,Qiao, N.,Xu, XL.,Xin, XP.,Han, JY.,...&Kuzyakov, Y.(2016).Nitrogen acquisition by plants and microorganisms in a temperate grassland.SCIENTIFIC REPORTS,6,-.
MLA Liu, QY,et al."Nitrogen acquisition by plants and microorganisms in a temperate grassland".SCIENTIFIC REPORTS 6(2016):-.
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