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dc.contributor.author
Arancibia, Natalia B.  
dc.contributor.author
Solans, Mariana  
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Mestre, María Cecilia  
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Chaia, Eugenia Esther  
dc.date.available
2020-01-09T18:38:22Z  
dc.date.issued
2018-10-15  
dc.identifier.citation
Arancibia, Natalia B.; Solans, Mariana; Mestre, María Cecilia; Chaia, Eugenia Esther; Effect of Pinus ponderosa afforestation on soilborne Frankia and saprophytic Actinobacteria in Northwest Patagonia, Argentina; Springer; Symbiosis; 76; 2; 15-10-2018; 129-137  
dc.identifier.issn
0334-5114  
dc.identifier.uri
http://hdl.handle.net/11336/94166  
dc.description.abstract
Large areas in the extra-Andean region in the forest - steppe ecotone in “Northwestern Argentinean Patagonia” have been replaced by plantations of the exotic conifer Pinus ponderosa which modify soils physical and chemical factors and alter the biodiversity. Considering that in the region occur saprophytic soilborne actinobacteria that play important role as the fixation of atmospheric nitrogen (N2) in symbiosis with native plant species and the production of bioactive molecules in plants rhizosphere, we aimed to study the effect of the plantation on the abundance of the N2 fixer Frankia and on the genus diversity of cultivable rhizospheric actinobacteria. The study was performed with soils of six paired sites with pine plantations and natural neighbor areas (including steppes or shrublands). Abundance of infective Frankia was estimated by evaluating the nodulation capacity of soils, through a plant bioassay using Ochetophila trinervis as trap plant. Isolation trials for saprophytic actinobacteria were performed by applying chemotactic and successive soils dilutions methods. We concluded that P. ponderosa afforestation affect soil actinobacteria. This was mainly evidenced by a decrease in the Frankia nodulation capacity in O. trinervis, which was related to plantation age, to lower soil carbon and nitrogen content, higher available phosphorus, and to a slight decrease in soils pH. Pine plantation influence on the cultivable saprophytic actinobacteria was less clear. The study highlights the importance of soils as source of Frankia and rhizospheric actinobacteria in relation to disturbance caused by pine plantation in natural environments with native actinorhizal plant species.  
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application/pdf  
dc.language.iso
eng  
dc.publisher
Springer  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ACTINOPLANES  
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DISCARIA  
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FRANKIA POPULATION  
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NODULATION CAPACITY  
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OCHETOPHILA TRINERVIS  
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Otros Tópicos Biológicos  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Effect of Pinus ponderosa afforestation on soilborne Frankia and saprophytic Actinobacteria in Northwest Patagonia, Argentina  
dc.type
info:eu-repo/semantics/article  
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info:ar-repo/semantics/artículo  
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info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-10-10T13:46:18Z  
dc.identifier.eissn
1878-7665  
dc.journal.volume
76  
dc.journal.number
2  
dc.journal.pagination
129-137  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlín  
dc.description.fil
Fil: Arancibia, Natalia B.. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina  
dc.description.fil
Fil: Solans, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina  
dc.description.fil
Fil: Mestre, María Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales.; Argentina  
dc.description.fil
Fil: Chaia, Eugenia Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina  
dc.journal.title
Symbiosis  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s13199-018-0538-3  
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info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs13199-018-0538-3