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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/03/2014 |
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Data da última atualização: |
04/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AKAMATSU, H.; YAMANAKA, N.; YAMAOKA, Y.; SOARES, R. M.; MOREL, W.; IVANCOVICH, A. J. G.; BOGADO, A. N.; KATO, M.; YORINORI, J. T.; SUENAGA, K. |
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Afiliação: |
HAJIME AKAMATSU, JIRCAS; NAOKI YAMANAKA, JIRCAS; YUICHI YAMAOKA, Faculty of Life and Environmental Sciences, University of Tsukuba; RAFAEL MOREIRA SOARES, CNPSO; WILFRIDO MOREL, CICM/CRIA/IPTA; ANTONIO JUAN GERARDO IVANCOVICH, EEA-Pergamino/INTA; ALICIA NOELIA BOGADO, CICM/CRIA/IPTA; MASAYASU KATO, JIRCAS; JOSÉ TADASHI YORINORI, CNPSO; KAZUHIRO SUENAGA, JIRCAS. |
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Título: |
Pathogenic diversity of soybean rust in Argentina, Brazil, and Paraguay. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Journal of General Plant Pathology, v. 79, n. 1, p. 28-40, Jan. 2013. |
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ISSN: |
1345-2630 |
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DOI: |
10.1007/s10327-012-0421-7 |
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Idioma: |
Inglês |
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Conteúdo: |
Phakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for identifying resistant plant genotypes and targeting effective cultivars against certain populations. Fifty-nine rust populations from Argentina, Brazil, and Paraguay were evaluated for pathogenicity in three cropping seasons, 2007/2008?2009/2010, using 16 soybean differentials. Only two pairs of P. pachyrhizi populations displayed identical pathogenicity profiles, indicating substantial pathogenic variation in the rust populations. Comparative analysis of 59 South American and five Japanese samples revealed that pathogenic differences were not only detected within South America but also distinct between the P. pachyrhizi populations from South America and Japan. In addition, seasonal changes in rust pathogenicity were detected during the sampling period. The differentials containing resistance genes (Rpp: resistance to P. p achyrhizi) Rpp1, Rpp2, Rpp3, and Rpp4, except for Plant Introduction (PI) 587880A, displayed a resistant reaction to only 1.8?14, 24?28, 22, and 36 % of South American P. pachyrhizi populations, respectively. In contrast, PI 587880A (Rpp1), Shiranui (Rpp5), and 3 Rpp-unknown differentials (PI 587855, PI 587905, and PI 594767A) showed a resistant reaction to 78?96 % of all populations. This study demonstrated that P. pachyrhizi populations from South America vary geographically and temporally in pathogenicity and that the known Rpp genes other than Rpp1 in PI 587880A and Rpp5 have been less effective against recent pathogen populations in the countries studied. MenosPhakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for identifying resistant plant genotypes and targeting effective cultivars against certain populations. Fifty-nine rust populations from Argentina, Brazil, and Paraguay were evaluated for pathogenicity in three cropping seasons, 2007/2008?2009/2010, using 16 soybean differentials. Only two pairs of P. pachyrhizi populations displayed identical pathogenicity profiles, indicating substantial pathogenic variation in the rust populations. Comparative analysis of 59 South American and five Japanese samples revealed that pathogenic differences were not only detected within South America but also distinct between the P. pachyrhizi populations from South America and Japan. In addition, seasonal changes in rust pathogenicity were detected during the sampling period. The differentials containing resistance genes (Rpp: resistance to P. p achyrhizi) Rpp1, Rpp2, Rpp3, and Rpp4, except for Plant Introduction (PI) 587880A, displayed a resistant reaction to only 1.8?14, 24?28, 22, and 36 % of South American P. pachyrhizi populations, respectively. In contrast, PI 587880A (Rpp1), Shiranui (Rpp5), and 3 Rpp-unknown differentials (PI 587855, PI 587905, and PI 594767A) showed a resistant reaction to 78?96 % of all populations. This study demonstrated that P. pachyrhizi populations from South America vary ... Mostrar Tudo |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/98660/1/Pathogenic-diversity-of-soybean-rust-in-Argentina-Brazil.pdf
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Marc: |
LEADER 02446naa a2200265 a 4500
001 1981729
005 2022-04-04
008 2013 bl uuuu u00u1 u #d
022 $a1345-2630
024 7 $a10.1007/s10327-012-0421-7$2DOI
100 1 $aAKAMATSU, H.
245 $aPathogenic diversity of soybean rust in Argentina, Brazil, and Paraguay.$h[electronic resource]
260 $c2013
520 $aPhakopsora pachyrhizi, the cause of soybean rust, is an economically important pathogen of soybean in South America. Understanding the pathogenicity of indigenous fungal populations is useful for identifying resistant plant genotypes and targeting effective cultivars against certain populations. Fifty-nine rust populations from Argentina, Brazil, and Paraguay were evaluated for pathogenicity in three cropping seasons, 2007/2008?2009/2010, using 16 soybean differentials. Only two pairs of P. pachyrhizi populations displayed identical pathogenicity profiles, indicating substantial pathogenic variation in the rust populations. Comparative analysis of 59 South American and five Japanese samples revealed that pathogenic differences were not only detected within South America but also distinct between the P. pachyrhizi populations from South America and Japan. In addition, seasonal changes in rust pathogenicity were detected during the sampling period. The differentials containing resistance genes (Rpp: resistance to P. p achyrhizi) Rpp1, Rpp2, Rpp3, and Rpp4, except for Plant Introduction (PI) 587880A, displayed a resistant reaction to only 1.8?14, 24?28, 22, and 36 % of South American P. pachyrhizi populations, respectively. In contrast, PI 587880A (Rpp1), Shiranui (Rpp5), and 3 Rpp-unknown differentials (PI 587855, PI 587905, and PI 594767A) showed a resistant reaction to 78?96 % of all populations. This study demonstrated that P. pachyrhizi populations from South America vary geographically and temporally in pathogenicity and that the known Rpp genes other than Rpp1 in PI 587880A and Rpp5 have been less effective against recent pathogen populations in the countries studied.
650 $aSoja
700 1 $aYAMANAKA, N.
700 1 $aYAMAOKA, Y.
700 1 $aSOARES, R. M.
700 1 $aMOREL, W.
700 1 $aIVANCOVICH, A. J. G.
700 1 $aBOGADO, A. N.
700 1 $aKATO, M.
700 1 $aYORINORI, J. T.
700 1 $aSUENAGA, K.
773 $tJournal of General Plant Pathology$gv. 79, n. 1, p. 28-40, Jan. 2013.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
22/04/2016 |
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Data da última atualização: |
22/04/2016 |
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Autoria: |
GRESSLER, L. T.; VARGAS, A. C. de; COSTA, M. M. da; SUTILI, F. J.; SCHWAB, M.; PEREIRA, D. I. B.; SANGIONI, L. A.; BOTTON, S. de A. |
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Afiliação: |
LETÍCIA T. GRESSLER, UFSM; AGUEDA C. DE VARGAS, UFSM; MATEUS M. DA COSTA, UNIVASF; FERNANDO JONAS SUTILI, UFSM; MARCELO SCHWAB, UFSM; DANIELA ISABEL B. PEREIRA, UFPEL; LUÍS ANTONIO SANGIONI, UFSM; SÔNIA DE A. BOTTON, UFSM. |
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Título: |
Biofilm formation by Rhodococcus equi and putative association with macrolide resistance. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Brasília, DF, v. 35, n. 10, p. 835-841, out. 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Rhodococcus equi is a facultative intracellular pathogen, which cause severe pyogranulomatous pneumonia in foals and tuberculosis-like lesions in humans. Its ability to form biofilm was described in strains isolated from chronic diseases associated to treatment failures in humans. This study aimed to verify the biofilm formation by 113 R. equi isolated from equine samples (clinical and fecal) using two different methods (biofilm--culturing with and without additional glucose and epifluorescence microscopy). We also aimed to determine the efficacy of azithromycin, clarithromycin and erythromycin on R. equi in established biofilm. We found 80.5% (26/41) and 63% (58/72) biofilm--positive isolates, in fecal and clinical samples, respectively. The additional glucose increased the biofilm formation by R. equi fecal samples, but not by clinical samples. The antimicrobials tested herein were not able to eradicate R. equi in biofilm even at higher concentrations. This is the first study showing the biofilm formation by R. equi isolated from equine samples. Our findings indicate that R. equi biofilm-producers may be more resistant to the antimicrobials evaluated. Further studies are warranted to test this hypothesis. |
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Palavras-Chave: |
DAPI; Macrolídeos; Resistência antimicrobiana. |
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Thesagro: |
Biofilme. |
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Thesaurus NAL: |
Antibiotic resistance; Biofilm; Macrolides; Rhodococcus equi. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/142499/1/Biofilm-formation.pdf
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Marc: |
LEADER 02088naa a2200301 a 4500
001 2043798
005 2016-04-22
008 2015 bl uuuu u00u1 u #d
100 1 $aGRESSLER, L. T.
245 $aBiofilm formation by Rhodococcus equi and putative association with macrolide resistance.
260 $c2015
520 $aRhodococcus equi is a facultative intracellular pathogen, which cause severe pyogranulomatous pneumonia in foals and tuberculosis-like lesions in humans. Its ability to form biofilm was described in strains isolated from chronic diseases associated to treatment failures in humans. This study aimed to verify the biofilm formation by 113 R. equi isolated from equine samples (clinical and fecal) using two different methods (biofilm--culturing with and without additional glucose and epifluorescence microscopy). We also aimed to determine the efficacy of azithromycin, clarithromycin and erythromycin on R. equi in established biofilm. We found 80.5% (26/41) and 63% (58/72) biofilm--positive isolates, in fecal and clinical samples, respectively. The additional glucose increased the biofilm formation by R. equi fecal samples, but not by clinical samples. The antimicrobials tested herein were not able to eradicate R. equi in biofilm even at higher concentrations. This is the first study showing the biofilm formation by R. equi isolated from equine samples. Our findings indicate that R. equi biofilm-producers may be more resistant to the antimicrobials evaluated. Further studies are warranted to test this hypothesis.
650 $aAntibiotic resistance
650 $aBiofilm
650 $aMacrolides
650 $aRhodococcus equi
650 $aBiofilme
653 $aDAPI
653 $aMacrolídeos
653 $aResistência antimicrobiana
700 1 $aVARGAS, A. C. de
700 1 $aCOSTA, M. M. da
700 1 $aSUTILI, F. J.
700 1 $aSCHWAB, M.
700 1 $aPEREIRA, D. I. B.
700 1 $aSANGIONI, L. A.
700 1 $aBOTTON, S. de A.
773 $tPesquisa Veterinária Brasileira, Brasília, DF$gv. 35, n. 10, p. 835-841, out. 2015.
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Embrapa Unidades Centrais (AI-SEDE) |
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