Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul

Detalhes bibliográficos
Autor(a) principal: Oliveira,Andréia M. R.
Data de Publicação: 2003
Outros Autores: Duarte,Valmir, Silveira,José R. P., Moraes,Marcelo G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Fitopatologia Brasileira
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000100007
Resumo: Erwinia carotovora subsp. atroseptica (Eca), E. carotovora subsp. carotovora (Ecc) and E. chrysanthemi (Ech) may cause potato (Solanum tuberosum) blackleg. To determine the occurrence of these pathogens in the conditions found in the State of Rio Grande do Sul (RS), potato plants showing blackleg symptoms were harvested from 22 fields in nine counties in Serra do Nordeste, Planalto, Depressão Central, and Grandes Lagoas, from September to December of 1999 (Spring-Summer season). Green pepper (Capsicum annuum) fruits were used as a host to enrich for pectolytic erwinia from potato stems with blackleg symptoms. Bacteria were subsequently isolated on non-selective medium. Isolates that were Gram-negative, facultatively anaerobic, and pitted crystal-violet-pectate medium were tested for biochemical traits to identify the species and subspecies. Four hundred strains were identified as either Eca, Ecc or Ech. Although the three erwinias were found in RS potato fields, only three strains of Ech were found in one field. Frequencies of Eca and Ecc were 55 and 42%, respectively. Eight strains could not be assigned based on the biochemical characterization.
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spelling Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do SulErwinia carotovora subsp. atrosepticaE. carotovora subsp. carotovoraErwinia chrysanthemiepidemiologySolanum tuberosumsoft rotErwinia carotovora subsp. atroseptica (Eca), E. carotovora subsp. carotovora (Ecc) and E. chrysanthemi (Ech) may cause potato (Solanum tuberosum) blackleg. To determine the occurrence of these pathogens in the conditions found in the State of Rio Grande do Sul (RS), potato plants showing blackleg symptoms were harvested from 22 fields in nine counties in Serra do Nordeste, Planalto, Depressão Central, and Grandes Lagoas, from September to December of 1999 (Spring-Summer season). Green pepper (Capsicum annuum) fruits were used as a host to enrich for pectolytic erwinia from potato stems with blackleg symptoms. Bacteria were subsequently isolated on non-selective medium. Isolates that were Gram-negative, facultatively anaerobic, and pitted crystal-violet-pectate medium were tested for biochemical traits to identify the species and subspecies. Four hundred strains were identified as either Eca, Ecc or Ech. Although the three erwinias were found in RS potato fields, only three strains of Ech were found in one field. Frequencies of Eca and Ecc were 55 and 42%, respectively. Eight strains could not be assigned based on the biochemical characterization.Sociedade Brasileira de Fitopatologia2003-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000100007Fitopatologia Brasileira v.28 n.1 2003reponame:Fitopatologia Brasileirainstname:Sociedade Brasileira de Fitopatologia (SBF)instacron:SBF10.1590/S0100-41582003000100007info:eu-repo/semantics/openAccessOliveira,Andréia M. R.Duarte,ValmirSilveira,José R. P.Moraes,Marcelo G.eng2003-06-03T00:00:00Zoai:scielo:S0100-41582003000100007Revistahttp://www.scielo.br/fbONGhttps://old.scielo.br/oai/scielo-oai.php||sbf-revista@ufla.br1678-46770100-4158opendoar:2003-06-03T00:00Fitopatologia Brasileira - Sociedade Brasileira de Fitopatologia (SBF)false
dc.title.none.fl_str_mv Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
title Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
spellingShingle Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
Oliveira,Andréia M. R.
Erwinia carotovora subsp. atroseptica
E. carotovora subsp. carotovora
Erwinia chrysanthemi
epidemiology
Solanum tuberosum
soft rot
title_short Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
title_full Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
title_fullStr Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
title_full_unstemmed Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
title_sort Incidence of pectolytic erwinias associated with blackleg of potato in Rio Grande do Sul
author Oliveira,Andréia M. R.
author_facet Oliveira,Andréia M. R.
Duarte,Valmir
Silveira,José R. P.
Moraes,Marcelo G.
author_role author
author2 Duarte,Valmir
Silveira,José R. P.
Moraes,Marcelo G.
author2_role author
author
author
dc.contributor.author.fl_str_mv Oliveira,Andréia M. R.
Duarte,Valmir
Silveira,José R. P.
Moraes,Marcelo G.
dc.subject.por.fl_str_mv Erwinia carotovora subsp. atroseptica
E. carotovora subsp. carotovora
Erwinia chrysanthemi
epidemiology
Solanum tuberosum
soft rot
topic Erwinia carotovora subsp. atroseptica
E. carotovora subsp. carotovora
Erwinia chrysanthemi
epidemiology
Solanum tuberosum
soft rot
description Erwinia carotovora subsp. atroseptica (Eca), E. carotovora subsp. carotovora (Ecc) and E. chrysanthemi (Ech) may cause potato (Solanum tuberosum) blackleg. To determine the occurrence of these pathogens in the conditions found in the State of Rio Grande do Sul (RS), potato plants showing blackleg symptoms were harvested from 22 fields in nine counties in Serra do Nordeste, Planalto, Depressão Central, and Grandes Lagoas, from September to December of 1999 (Spring-Summer season). Green pepper (Capsicum annuum) fruits were used as a host to enrich for pectolytic erwinia from potato stems with blackleg symptoms. Bacteria were subsequently isolated on non-selective medium. Isolates that were Gram-negative, facultatively anaerobic, and pitted crystal-violet-pectate medium were tested for biochemical traits to identify the species and subspecies. Four hundred strains were identified as either Eca, Ecc or Ech. Although the three erwinias were found in RS potato fields, only three strains of Ech were found in one field. Frequencies of Eca and Ecc were 55 and 42%, respectively. Eight strains could not be assigned based on the biochemical characterization.
publishDate 2003
dc.date.none.fl_str_mv 2003-01-01
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=S0100-41582003000100007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582003000100007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-41582003000100007
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 Brasileira de Fitopatologia
publisher.none.fl_str_mv Sociedade Brasileira de Fitopatologia
dc.source.none.fl_str_mv Fitopatologia Brasileira v.28 n.1 2003
reponame:Fitopatologia Brasileira
instname:Sociedade Brasileira de Fitopatologia (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Fitopatologia (SBF)
instacron_str SBF
institution SBF
reponame_str Fitopatologia Brasileira
collection Fitopatologia Brasileira
repository.name.fl_str_mv Fitopatologia Brasileira - Sociedade Brasileira de Fitopatologia (SBF)
repository.mail.fl_str_mv ||sbf-revista@ufla.br
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