First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil

In March 2006, diseased soybean plants (Glycine max) were found in the municipalities of Passo Fundo and Coxilha, state of Rio Grande do Sul, Brazil, showing withered, brown leaves and light to reddish-brown discoloration and necrosis (canker) of the lower half of the stem. Cultural characteristics in potato dextrose agar showed identical patterns to those described for Diaporthe phaseolorum varcaulivora (Dpc). The rDNA-ITS sequence data from the Brazilian strain CH 40/06 (GenBank accession number EU622854) were compared to homologous sequences from the NCBI GenBank database, and a high similarity with Dpc strains was verified. A phylogenetic reconstruction was performed to compare EU622854 with other related sequences and grouped with Dpc. This group was highly supported by the bootstrap test (99%). Morphology of the Brazilian specimen was also similar to that described in the literature for Dpc, but the ascospores were slightly narrower than the American original material of Dpc. In field surveys performed in the 2006/07 crop season, Dpc was also found in five additional municipalities in RS.

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Main Authors: Costamilan,Leila M., Yorinori,José T., Almeida,Álvaro M.R., Seixas,Claudine D.S., Binneck,Eliseu, Araújo,Marcelo R., Carbonari,Jairo A.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Fitopatologia 2008
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762008000500007
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spelling oai:scielo:S1982-567620080005000072009-01-09First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in BrazilCostamilan,Leila M.Yorinori,José T.Almeida,Álvaro M.R.Seixas,Claudine D.S.Binneck,EliseuAraújo,Marcelo R.Carbonari,Jairo A. stem canker Phomopsis phaseoli f.sp. caulivora Glycine max In March 2006, diseased soybean plants (Glycine max) were found in the municipalities of Passo Fundo and Coxilha, state of Rio Grande do Sul, Brazil, showing withered, brown leaves and light to reddish-brown discoloration and necrosis (canker) of the lower half of the stem. Cultural characteristics in potato dextrose agar showed identical patterns to those described for Diaporthe phaseolorum varcaulivora (Dpc). The rDNA-ITS sequence data from the Brazilian strain CH 40/06 (GenBank accession number EU622854) were compared to homologous sequences from the NCBI GenBank database, and a high similarity with Dpc strains was verified. A phylogenetic reconstruction was performed to compare EU622854 with other related sequences and grouped with Dpc. This group was highly supported by the bootstrap test (99%). Morphology of the Brazilian specimen was also similar to that described in the literature for Dpc, but the ascospores were slightly narrower than the American original material of Dpc. In field surveys performed in the 2006/07 crop season, Dpc was also found in five additional municipalities in RS.info:eu-repo/semantics/openAccessSociedade Brasileira de FitopatologiaTropical Plant Pathology v.33 n.5 20082008-10-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762008000500007en10.1590/S1982-56762008000500007
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country Brasil
countrycode BR
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libraryname SciELO
language English
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author Costamilan,Leila M.
Yorinori,José T.
Almeida,Álvaro M.R.
Seixas,Claudine D.S.
Binneck,Eliseu
Araújo,Marcelo R.
Carbonari,Jairo A.
spellingShingle Costamilan,Leila M.
Yorinori,José T.
Almeida,Álvaro M.R.
Seixas,Claudine D.S.
Binneck,Eliseu
Araújo,Marcelo R.
Carbonari,Jairo A.
First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil
author_facet Costamilan,Leila M.
Yorinori,José T.
Almeida,Álvaro M.R.
Seixas,Claudine D.S.
Binneck,Eliseu
Araújo,Marcelo R.
Carbonari,Jairo A.
author_sort Costamilan,Leila M.
title First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil
title_short First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil
title_full First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil
title_fullStr First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil
title_full_unstemmed First report of Diaporthe phaseolorum var. caulivora infecting soybean plants in Brazil
title_sort first report of diaporthe phaseolorum var. caulivora infecting soybean plants in brazil
description In March 2006, diseased soybean plants (Glycine max) were found in the municipalities of Passo Fundo and Coxilha, state of Rio Grande do Sul, Brazil, showing withered, brown leaves and light to reddish-brown discoloration and necrosis (canker) of the lower half of the stem. Cultural characteristics in potato dextrose agar showed identical patterns to those described for Diaporthe phaseolorum varcaulivora (Dpc). The rDNA-ITS sequence data from the Brazilian strain CH 40/06 (GenBank accession number EU622854) were compared to homologous sequences from the NCBI GenBank database, and a high similarity with Dpc strains was verified. A phylogenetic reconstruction was performed to compare EU622854 with other related sequences and grouped with Dpc. This group was highly supported by the bootstrap test (99%). Morphology of the Brazilian specimen was also similar to that described in the literature for Dpc, but the ascospores were slightly narrower than the American original material of Dpc. In field surveys performed in the 2006/07 crop season, Dpc was also found in five additional municipalities in RS.
publisher Sociedade Brasileira de Fitopatologia
publishDate 2008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1982-56762008000500007
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