Arbuscular mycorrhiza improve growth, nitrogen uptake, and nitrogen use efficiency in wheat grown under elevated CO2
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Arbuscular mycorrhiza improve growth, nitrogen uptake, and nitrogen use efficiency in wheat grown under elevated CO2. / Zhu, Xiancan; Song, Fengbin; Liu, Shengqun; Liu, Fulai.
In: Mycorrhiza, Vol. 26, No. 2, 2016, p. 133-140.Research output: Contribution to journal › Journal article › peer-review
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TY - JOUR
T1 - Arbuscular mycorrhiza improve growth, nitrogen uptake, and nitrogen use efficiency in wheat grown under elevated CO2
AU - Zhu, Xiancan
AU - Song, Fengbin
AU - Liu, Shengqun
AU - Liu, Fulai
PY - 2016
Y1 - 2016
N2 - Effects of the arbuscular mycorrhizal (AM) fungus Rhizophagus irregularis on plant growth, carbon (C) and nitrogen (N) accumulation, and partitioning was investigated in Triticum aestivum L. plants grown under elevated CO2 in a pot experiment. Wheat plants inoculated or not inoculated with the AM fungus were grown in two glasshouse cells with different CO2 concentrations (400 and 700 ppm) for 10 weeks. A (15)N isotope labeling technique was used to trace plant N uptake. Results showed that elevated CO2 increased AM fungal colonization. Under CO2 elevation, AM plants had higher C concentration and higher plant biomass than the non-AM plants. CO2 elevation did not affect C and N partitioning in plant organs, while AM symbiosis increased C and N allocation into the roots. In addition, plant C and N accumulation, (15)N recovery rate, and N use efficiency (NUE) were significantly higher in AM plants than in non-AM controls under CO2 enrichment. It is concluded that AM symbiosis favors C and N partitioning in roots, increases C accumulation and N uptake, and leads to greater NUE in wheat plants grown at elevated CO2.
AB - Effects of the arbuscular mycorrhizal (AM) fungus Rhizophagus irregularis on plant growth, carbon (C) and nitrogen (N) accumulation, and partitioning was investigated in Triticum aestivum L. plants grown under elevated CO2 in a pot experiment. Wheat plants inoculated or not inoculated with the AM fungus were grown in two glasshouse cells with different CO2 concentrations (400 and 700 ppm) for 10 weeks. A (15)N isotope labeling technique was used to trace plant N uptake. Results showed that elevated CO2 increased AM fungal colonization. Under CO2 elevation, AM plants had higher C concentration and higher plant biomass than the non-AM plants. CO2 elevation did not affect C and N partitioning in plant organs, while AM symbiosis increased C and N allocation into the roots. In addition, plant C and N accumulation, (15)N recovery rate, and N use efficiency (NUE) were significantly higher in AM plants than in non-AM controls under CO2 enrichment. It is concluded that AM symbiosis favors C and N partitioning in roots, increases C accumulation and N uptake, and leads to greater NUE in wheat plants grown at elevated CO2.
KW - Biomass
KW - Carbon
KW - Carbon Dioxide
KW - Glomeromycota
KW - Isotope Labeling
KW - Mycorrhizae
KW - Nitrogen
KW - Symbiosis
KW - Triticum
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
U2 - 10.1007/s00572-015-0654-3
DO - 10.1007/s00572-015-0654-3
M3 - Journal article
C2 - 26148451
VL - 26
SP - 133
EP - 140
JO - Mycorrhiza
JF - Mycorrhiza
SN - 0940-6360
IS - 2
ER -
ID: 169104898