Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans

Detalhes bibliográficos
Autor(a) principal: Kober,Marcia de Vargas
Data de Publicação: 2004
Outros Autores: Sá,Enilson Luiz Saccol de, Freire,João Ruy Jardim, Giongo,Adriana
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000500020
Resumo: Variation in rhizobia strains isn’t a desirable fact based mainly on the possibility of unexpected results on legume inoculation. In this work, we studied the variability on phenotypic characteristics and genetic stability of rhizobia strains recommended for soybean inoculation. Variants with stable colony morphology were obtained from Bradyrhizobium japonicum strain SEMIA 5080 and from B. elkanii SEMIA 5019. Variants from SEMIA 587 obtained by another author were also used. The variants differed on colony characteristics, nodulation capacity, nitrogen fixation efficiency and competitive ability for nodule formation in two soybean varieties (Jacui 7 and IAS 5). Symbiotic behavior varied according to plant variety. Only the variants 5019 G and 5019 P differed on the isoenzymatic profile. There were differences in antibiotic resistance between variants from two strains. Correlation between symbiotic characteristics and colony morphology or antibiotic resistance wasn’t conclusive. The results indicate that the variability in rhizobia strains might be an important factor to be considered in strain selection and preservation of cultures for inoculant production.
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spelling Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeansvariants isolationinoculant productionisoenzymesVariation in rhizobia strains isn’t a desirable fact based mainly on the possibility of unexpected results on legume inoculation. In this work, we studied the variability on phenotypic characteristics and genetic stability of rhizobia strains recommended for soybean inoculation. Variants with stable colony morphology were obtained from Bradyrhizobium japonicum strain SEMIA 5080 and from B. elkanii SEMIA 5019. Variants from SEMIA 587 obtained by another author were also used. The variants differed on colony characteristics, nodulation capacity, nitrogen fixation efficiency and competitive ability for nodule formation in two soybean varieties (Jacui 7 and IAS 5). Symbiotic behavior varied according to plant variety. Only the variants 5019 G and 5019 P differed on the isoenzymatic profile. There were differences in antibiotic resistance between variants from two strains. Correlation between symbiotic characteristics and colony morphology or antibiotic resistance wasn’t conclusive. The results indicate that the variability in rhizobia strains might be an important factor to be considered in strain selection and preservation of cultures for inoculant production.Universidade Federal de Santa Maria2004-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000500020Ciência Rural v.34 n.5 2004reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/S0103-84782004000500020info:eu-repo/semantics/openAccessKober,Marcia de VargasSá,Enilson Luiz Saccol deFreire,João Ruy JardimGiongo,Adrianaeng2004-09-03T00:00:00ZRevista
dc.title.none.fl_str_mv Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
title Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
spellingShingle Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
Kober,Marcia de Vargas
variants isolation
inoculant production
isoenzymes
title_short Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
title_full Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
title_fullStr Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
title_full_unstemmed Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
title_sort Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
author Kober,Marcia de Vargas
author_facet Kober,Marcia de Vargas
Sá,Enilson Luiz Saccol de
Freire,João Ruy Jardim
Giongo,Adriana
author_role author
author2 Sá,Enilson Luiz Saccol de
Freire,João Ruy Jardim
Giongo,Adriana
author2_role author
author
author
dc.contributor.author.fl_str_mv Kober,Marcia de Vargas
Sá,Enilson Luiz Saccol de
Freire,João Ruy Jardim
Giongo,Adriana
dc.subject.por.fl_str_mv variants isolation
inoculant production
isoenzymes
topic variants isolation
inoculant production
isoenzymes
description Variation in rhizobia strains isn’t a desirable fact based mainly on the possibility of unexpected results on legume inoculation. In this work, we studied the variability on phenotypic characteristics and genetic stability of rhizobia strains recommended for soybean inoculation. Variants with stable colony morphology were obtained from Bradyrhizobium japonicum strain SEMIA 5080 and from B. elkanii SEMIA 5019. Variants from SEMIA 587 obtained by another author were also used. The variants differed on colony characteristics, nodulation capacity, nitrogen fixation efficiency and competitive ability for nodule formation in two soybean varieties (Jacui 7 and IAS 5). Symbiotic behavior varied according to plant variety. Only the variants 5019 G and 5019 P differed on the isoenzymatic profile. There were differences in antibiotic resistance between variants from two strains. Correlation between symbiotic characteristics and colony morphology or antibiotic resistance wasn’t conclusive. The results indicate that the variability in rhizobia strains might be an important factor to be considered in strain selection and preservation of cultures for inoculant production.
publishDate 2004
dc.date.none.fl_str_mv 2004-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000500020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000500020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-84782004000500020
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 Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.34 n.5 2004
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Rural
collection Ciência Rural
repository.name.fl_str_mv
repository.mail.fl_str_mv
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