Interactions among functional groups in the cycling of,carbon, nitrogen and phosphorus in the rhizosphere of three successional species of tropical woody trees |
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| Institution: | 1. Laboratório de Ecologia Microbiana, Departamento de Microbiologia, Universidade Estadual de Londrina, CCB, Caixa Postal 6001, Londrina, PR 86051-990, Brazil;2. Departamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina, CCB, Caixa Postal 6001, Londrina, PR 86051-990, Brazil;3. Programa de Pós Graduação em Microbiologia;4. Programa de Pós Graduação em Agronomia;5. Bolsista PIBIC;1. University of São Paulo, ESALQ, Soil Science Department, Soil Microbiology Lab, Pádua Dias Ave, no. 11, CEP 13418-900 Piracicaba, SP, Brazil;2. EMBRAPA Environment (Brazilian Agricultural Research Corporation), 340, Highway, km 127,5, CEP 13820-000 Jaguariuna, SP, Brazil;3. ETH Zurich, Institute of Integrative Biology, Department of Environmental Systems Science, Unversitaetstrasse 16, 8092 Zurich, Switzerland;1. Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha 6–Suchdol, 16521 Prague, Czech Republic;2. Dpto. Ciencias del Medio Natural, Universidad Pública de Navarra, Campus de Arrosadía s/n, 31006 Pamplona, Spain;3. Instituto Pirenaico de Ecología (IPE-CSIC), Avda. Montañana 1005, 50059 Zaragoza, Spain;4. Centre Tecnològic Forestal de Catalunya (CTFC-CEMFOR), Ctra. de St. Llorenç de Morunys km 2, E-25280 Solsona, Spain;5. Forest Bioengineering Solutions S.A. Ctra. de Sant Llorenç de Morunys, Km. 2. E-25280 Solsona, Spain;6. Departament de Producció Vegetal i Ciència Forestal, Universitat de Lleida-Agrotecnio Center (UdL-Agrotecnio), Avda. Rovira Roure, 191, E-25198 Lleida, Spain;1. Laboratory of Microbiology, University of Neuchâtel, Neuchâtel 2000, Switzerland;2. Laboratory of Biogeosciences, Institute of Earth Surface Dynamics, University of Lausanne, Lausanne, Switzerland;3. Instituto Nacional de Tecnología Agropecuaria, EEA Cerro Azul, Cerro Azul 3313, Argentina;4. Instituto de Biotecnología Misiones, Universidad Nacional de Misiones, Posadas 3300, Argentina;1. Department of Soil Biology and Plant Nutrition, University of Kassel, Nordbahnhofstr. 1a, 37213 Witzenhausen, Germany;2. Nutrient Management Group, Department of Environmental Control, Northwest German Forest Research Institute, Grätzelstr. 2, 37079 Göttingen, Germany;3. Department of Soil Ecology, University of Bayreuth, Dr.-Hans-Frisch-Str. 1-3, 95448 Bayreuth, Germany;1. Department of Agricultural Soil Science, University of Göttingen, Göttingen, Germany;2. Department of Soil Science of Temperate Ecosystems, University of Göttingen, Göttingen, Germany;3. Department of Soil Sciences, Vietnam National University of Forestry, Hanoi, Viet Nam;4. Institute of Physicochemical and Biological Problems in Soil Science, Pushchino, Russia |
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| Abstract: | During the natural revegetation process, which occurs after rain forest destruction, there are different types of successional groups of woody tree species (pioneer (PN), early secondary (ES), late secondary (LS) and climax). A study of interactions among these plant groups, and the functional groups of microorganisms, is fundamental in improving revegetation programs in south Brazil. The revegetation processes are related directly to the functional communities of microorganisms, because several stages of the nutrient cycle are mediated exclusively by microorganisms, and some of these microorganisms can participate in one or more biogeochemical cycles. The interactions between some successional groups of woody species inoculated with native arbuscular mycorrhizal (AM) fungi and the C, P and N cycling functional groups of microorganisms were assessed. The results showed that the AM fungi play an important role in regulating the cycling functional populations in the plant rhizosphere. The characteristics of the plant successional groups also influenced the functional microbial groups. Two populations of free-living N-fixing bacteria were evaluated. Inhibition occurred in the community that used glucose as a carbon source in the pioneer rhizosphere, whereas no differences were observed in the community of N-fixing bacteria that used malate as carbon source. |
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