Plant, fungal, bacterial, and nitrogen interactions in the litter layer of a native Patagonian forest
| Autor: | Nicolás Rascovan, Amy T. Austin, Lucía Vivanco |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine lcsh:Medicine Ecosystem Science 01 natural sciences purl.org/becyt/ford/1 [https] Temperate forest MICROBIAL COMMUNITIES Nothofagus Nitrogen addition biology Chemistry General Neuroscience Litter decomposition Forestry General Medicine Biogeochemistry Plant litter TEMPERATE FOREST BACTERIA General Agricultural and Biological Sciences Temperate rainforest CIENCIAS NATURALES Y EXACTAS LEAF LITTER Biogeochemical cycle Microbial communities 010603 evolutionary biology General Biochemistry Genetics and Molecular Biology LITTER DECOMPOSITION Ciencias Biológicas 03 medical and health sciences Botany Home field advantage NITROGEN ADDITION purl.org/becyt/ford/1.6 [https] PLANT SPECIES EFFECTS Bacteria Plant species effects lcsh:R Fungi Leaf litter FUNGI biology.organism_classification Decomposition 030104 developmental biology Microbial population biology HOME FIELD ADVANTAGE Litter NOTHOFAGUS Conservación de la Biodiversidad |
| Zdroj: | PeerJ No.4 FAUBA Digital (UBA-FAUBA) Universidad de Buenos Aires. Facultad de Agronomía instacron:UBA-FAUBA Vol.6 e4754, 18p. PeerJ, Vol 6, p e4754 (2018) CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| Popis: | Plant-microbial interactions in the litter layer represent one of the most relevant interactions for biogeochemical cycling as litter decomposition is a key first step in carbon and nitrogen turnover. However, our understanding of these interactions in the litter layer remains elusive. In an old-growth mixed Nothofagus forest in Patagonia, we studied the effects of single tree species identity and themixture of three tree species on the fungal and bacterial composition in the litter layer. We also evaluated the effects of nitrogen (N) addition on these plant-microbial interactions. In addition, we compared themagnitude of stimulation of litter decomposition due to home field advantage (HFA, decomposition occurs more rapidly when litter is placed beneath the plant species from which it had been derived than beneath a different plant species) and Naddition that we previously demonstrated in this same forest, and usedmicrobial information to interpret these results. Tree species identity had a strong and significant effect on the composition of fungal communities but not on the bacterial community of the litter layer. The microbial composition of the litter layer under the tree species mixture show an averaged contribution of each single tree species. N addition did not erase the plant species footprint on the fungal community, and neither altered the bacterial community. N addition stimulated litter decomposition asmuch as HFA for certain tree species, but themechanisms behind N and HFA stimulation may have differed. Our results suggest that stimulation of decomposition from N addition might have occurred due to increased microbial activity without large changes in microbial community composition, while HFA may have resulted principally from plant species´ effects on the litter fungal community. Together, our results suggest that plant-microbial interactions can be an unconsidered driver of litter decomposition in temperate forests. Fil: Vivanco, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina Fil: Rascovan, Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Agrobiotecnología de Rosario; Argentina Fil: Austin, Amy Theresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas; Argentina |
| Databáze: | OpenAIRE |
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