Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?

Detalhes bibliográficos
Autor(a) principal: Soares,Ricardo
Data de Publicação: 2014
Outros Autores: Fernandéz,Concepción, Carranca,Corina, Madeira,Manuel, Castro,Isabel Videira e
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2014000400013
Resumo: The present study aimed to monitor the rhizobial population present in four “montado“ ecosystems from two different locations, Vaiamonte and Estremoz in the South of Portugal, with natural and sown pastures. The influence of tree canopy of Quercus suber was evaluated in relation to rhizobial population abundance, symbiotic effectiveness and genetic diversity. Results showed that the size of natural rhizobial population in the two older improved pastures analyzed, having more than 30 and 12 years, had the highest values outside the influence of cork tree canopy. However, under the canopy, the population size in these two improved pastures decreased. Also, rhizobial abundance in the youngest sown pastures (>5-years-old) had high values, either beneath the tree canopy or outside its influence. Concerning the effectiveness of symbiotic fixation, results revealed the existence of N2 fixing strains in the four pastures, the highest values being observed in the youngest improved pasture and under the tree canopy. A high genetic diversity of rhizobial population was also found in all pastures, especially outside the influence of the tree canopy.
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spelling Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?canopy of Quercus suber L.diversityeffectivenesspopulation sizerhizobiaThe present study aimed to monitor the rhizobial population present in four “montado“ ecosystems from two different locations, Vaiamonte and Estremoz in the South of Portugal, with natural and sown pastures. The influence of tree canopy of Quercus suber was evaluated in relation to rhizobial population abundance, symbiotic effectiveness and genetic diversity. Results showed that the size of natural rhizobial population in the two older improved pastures analyzed, having more than 30 and 12 years, had the highest values outside the influence of cork tree canopy. However, under the canopy, the population size in these two improved pastures decreased. Also, rhizobial abundance in the youngest sown pastures (>5-years-old) had high values, either beneath the tree canopy or outside its influence. Concerning the effectiveness of symbiotic fixation, results revealed the existence of N2 fixing strains in the four pastures, the highest values being observed in the youngest improved pasture and under the tree canopy. A high genetic diversity of rhizobial population was also found in all pastures, especially outside the influence of the tree canopy.Sociedade de Ciências Agrárias de Portugal2014-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2014000400013Revista de Ciências Agrárias v.37 n.4 2014reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2014000400013Soares,RicardoFernandéz,ConcepciónCarranca,CorinaMadeira,ManuelCastro,Isabel Videira einfo:eu-repo/semantics/openAccess2023-07-27T12:21:03ZPortal AgregadorONG
dc.title.none.fl_str_mv Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
title Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
spellingShingle Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
Soares,Ricardo
canopy of Quercus suber L.
diversity
effectiveness
population size
rhizobia
title_short Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
title_full Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
title_fullStr Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
title_full_unstemmed Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
title_sort Does tree environment in agro-forestry ecosystems influence the population of N2 fixing soil bacteria?
author Soares,Ricardo
author_facet Soares,Ricardo
Fernandéz,Concepción
Carranca,Corina
Madeira,Manuel
Castro,Isabel Videira e
author_role author
author2 Fernandéz,Concepción
Carranca,Corina
Madeira,Manuel
Castro,Isabel Videira e
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Soares,Ricardo
Fernandéz,Concepción
Carranca,Corina
Madeira,Manuel
Castro,Isabel Videira e
dc.subject.por.fl_str_mv canopy of Quercus suber L.
diversity
effectiveness
population size
rhizobia
topic canopy of Quercus suber L.
diversity
effectiveness
population size
rhizobia
description The present study aimed to monitor the rhizobial population present in four “montado“ ecosystems from two different locations, Vaiamonte and Estremoz in the South of Portugal, with natural and sown pastures. The influence of tree canopy of Quercus suber was evaluated in relation to rhizobial population abundance, symbiotic effectiveness and genetic diversity. Results showed that the size of natural rhizobial population in the two older improved pastures analyzed, having more than 30 and 12 years, had the highest values outside the influence of cork tree canopy. However, under the canopy, the population size in these two improved pastures decreased. Also, rhizobial abundance in the youngest sown pastures (>5-years-old) had high values, either beneath the tree canopy or outside its influence. Concerning the effectiveness of symbiotic fixation, results revealed the existence of N2 fixing strains in the four pastures, the highest values being observed in the youngest improved pasture and under the tree canopy. A high genetic diversity of rhizobial population was also found in all pastures, especially outside the influence of the tree canopy.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2014000400013
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2014000400013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2014000400013
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade de Ciências Agrárias de Portugal
publisher.none.fl_str_mv Sociedade de Ciências Agrárias de Portugal
dc.source.none.fl_str_mv Revista de Ciências Agrárias v.37 n.4 2014
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv
repository.mail.fl_str_mv
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