Arbuscular Mycorrhizal Fungi Alter Plant and Soil C:N:P Stoichiometries Under Warming and Nitrogen Input in a Semiarid Meadow of China
| Autor: | Xue Yang, Linlin Mei, Hongbing Cao, Jixun Guo, Tao Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
China Nitrogen Health Toxicology and Mutagenesis Climate Change chemistry.chemical_element phosphorus limitation lcsh:Medicine arbuscular mycorrhizal fungi Poaceae 01 natural sciences Article Soil Nutrient Symbiosis Species Specificity Mycorrhizae Ecological stoichiometry Chenopodiaceae global change biology Chemistry Setaria viridis Phosphorus fungi lcsh:R Public Health Environmental and Occupational Health food and beverages 04 agricultural and veterinary sciences Leymus Nutrients biology.organism_classification Grassland stoichiometry Agronomy grassland ecosystem 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Microcosm 010606 plant biology & botany |
| Zdroj: | International Journal of Environmental Research and Public Health, Vol 16, Iss 3, p 397 (2019) International Journal of Environmental Research and Public Health Volume 16 Issue 3 |
| ISSN: | 1660-4601 |
| Popis: | Ecological stoichiometry has been widely used to determine how plant-soil systems respond to global change and to reveal which factors limit plant growth. Arbuscular mycorrhizal fungi (AMF) can increase plants&rsquo uptake of nutrients such as nitrogen (N) and phosphorus (P), thereby altering plant and soil stoichiometries. To understand the regulatory effect of AMF feedback on plants and soil stoichiometry under global change, a microcosm experiment was conducted with warming and N input. The C4 grass Setaria viridis, C3 grass Leymus chinensis, and Chenopodiaceae species Suaeda corniculata were studied. The results showed that the mycorrhizal benefits for the C4 grass S. viridis were greater than those for the C3 grass L. chinensis, whereas for the Chenopodiaceae species S. corniculata, AMF symbiosis was antagonistic. Under N input and a combination of warming and N input, AMF significantly decreased the N:P ratios of all three species. Under N input, the soil N content and the N:P ratio were decreased significantly in the presence of AMF, whereas the soil C:N ratio was increased. These results showed that AMF can reduce the P limitation caused by N input and improve the efficiency of nutrient utilization, slow the negative influence of global change on plant growth, and promote grassland sustainability. |
| Databáze: | OpenAIRE |
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