| Autor: |
Ashish A. Malik, Somak Chowdhury, Veronika Schlager, Anna Oliver, Jeremy Puissant, Perla Griselle Mellado Vázquez, Nico Jehmlich, Martin von Bergen, Robert Iwan Griffiths, Gerd Gleixner |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Frontiers in Microbiology, Vol 7 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
1664-302X |
| DOI: |
10.3389/fmicb.2016.01247 |
| Popis: |
Despite several lines of observational evidence, there is a lack of consensus on whether higher fungal:bacterial (F:B) ratios directly cause higher soil carbon (C) storage. We employed RNA sequencing, protein profiling and isotope tracer techniques to evaluate whether differing F:B ratios are associated with differences in C storage. A mesocosm 13C labeled foliar litter decomposition experiment was performed in two soils that were similar in their physico-chemical properties but differed in microbial community structure, specifically their F:B ratio (determined by PLFA analyses, RNA sequencing and protein profiling; all three corroborating each other). Following litter addition, we observed a consistent increase in abundance of fungal phyla; and greater increases in the fungal dominated soil; implicating the role of fungi in litter decomposition. Litter derived 13C in respired CO2 was consistently lower, and residual 13C in bulk SOM was higher in high F:B soil demonstrating greater C storage potential in the fungal:bacterial dominated soil. We conclude that in this soil system, the increased abundance of fungi in both soils and the altered C cycling patterns in the fungal:bacterial dominated soils highlight the significant role of fungi in litter decomposition and indicate that F:B ratios are linked to higher C storage potential. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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