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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
21/02/2014 |
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Actualizado : |
08/06/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
STEWART, S.; GUILLIN, E. A.; DÍAZ, L. |
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Afiliación : |
SILVINA MARIA STEWART SONEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; E. A. GUILLIN, Instituto Nacional de Tecnología Agropecuaria (INTA), Castelar, Argentina; L. DÍAZ, Dirección General de Servicios Agrícolas (DGSA), Ministerio de Ganadería Agricultura y Pesca (MGAP), Uruguay. |
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Título : |
First report of soybean rust caused by phakopsora pachyrhizi in Uruguay. (Disease Notes). |
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Fecha de publicación : |
2005 |
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Fuente / Imprenta : |
Plant Disease, August 2005, Volume 89, Number 8, Page 909. https://doi.org/10.1094/PD-89-0909C -- OPEN ACCESS. |
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DOI : |
10.1094/PD-89-0909C |
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Idioma : |
Inglés |
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Contenido : |
Phakopsora pachyrhizi is a fairly new pathogen in South America and has become a serious threat for soybean production in the region (3). During May 2004, soybean (Glycine max) leaves with rust symptoms were observed on an experimental trial at La Estanzuela, National Institute for Agricultural Research in Colonia, southwestern Uruguay, on late-maturing genotypes (R7 stage). Small, necrotic, reddish brown lesions, suggestive of soybean rust, were detected on the upper surface of leaves. Uredinia and urediniospores were found on the underside of the leaves. The National Service of Plant Health (DGSA) was informed immediately. There the genus Phakopsora was confirmed on the basis of urediniospore morphology. These spores were minutely equinulated and measured 21 × 26.3 ?m (range 18 to 24 and 22 to 30 ?m, respectively), which was within the range described by Ono et al. (2). Leaf samples showing rust symptoms were submitted to the Instituto Ewald A. Favret (Instituto Nacional de Tecnología Agropecuaria, Argentina) for polymerase chain reaction assay using primer pairs Ppa1/Ppa2 (P. pachyrhizi) and Pme1/Pme2 (P. meibomiae) (1). Results showed P. pachyrhizi as the causal agent of soybean rust, while P. meibomiae tests yielded negative results. Pathogenicity tests were carried out on 10 V4 soybean plants, cv. Don Mario 5800, grown in the greenhouse at 20 to 22°C and a 14-h photoperiod. Urediniospores were collected with a cyclone spore collector into glass tubes, which were then filled with nonphytotoxic light industrial oil. Spore suspension was atomized onto eight plants, while two plants were sprayed only with oil as controls. Plants were placed in a dew chamber at 20°C and 100% relative humidity for 20 h and then returned to prior conditions. Symptoms of the disease were reproduced 10 days after inoculation. Two or three sporulating uredinia were observed only on the inoculated plants. Soybean rust caused by P. pachyrhizi was officially recognized as present in Uruguay in August 2004. © 2007 The American Phytopathological Society MenosPhakopsora pachyrhizi is a fairly new pathogen in South America and has become a serious threat for soybean production in the region (3). During May 2004, soybean (Glycine max) leaves with rust symptoms were observed on an experimental trial at La Estanzuela, National Institute for Agricultural Research in Colonia, southwestern Uruguay, on late-maturing genotypes (R7 stage). Small, necrotic, reddish brown lesions, suggestive of soybean rust, were detected on the upper surface of leaves. Uredinia and urediniospores were found on the underside of the leaves. The National Service of Plant Health (DGSA) was informed immediately. There the genus Phakopsora was confirmed on the basis of urediniospore morphology. These spores were minutely equinulated and measured 21 × 26.3 ?m (range 18 to 24 and 22 to 30 ?m, respectively), which was within the range described by Ono et al. (2). Leaf samples showing rust symptoms were submitted to the Instituto Ewald A. Favret (Instituto Nacional de Tecnología Agropecuaria, Argentina) for polymerase chain reaction assay using primer pairs Ppa1/Ppa2 (P. pachyrhizi) and Pme1/Pme2 (P. meibomiae) (1). Results showed P. pachyrhizi as the causal agent of soybean rust, while P. meibomiae tests yielded negative results. Pathogenicity tests were carried out on 10 V4 soybean plants, cv. Don Mario 5800, grown in the greenhouse at 20 to 22°C and a 14-h photoperiod. Urediniospores were collected with a cyclone spore collector into glass tubes, which were then f... Presentar Todo |
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Palabras claves : |
PHAKOPSORA PACHYRHIZI. |
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Thesagro : |
ROYA; SOJA. |
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Asunto categoría : |
-- |
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URL : |
https://doi.org/10.1094/PD-89-0909C
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Marc : |
LEADER 02691naa a2200193 a 4500
001 1003024
005 2023-06-08
008 2005 bl uuuu u00u1 u #d
024 7 $a10.1094/PD-89-0909C$2DOI
100 1 $aSTEWART, S.
245 $aFirst report of soybean rust caused by phakopsora pachyrhizi in Uruguay. (Disease Notes).$h[electronic resource]
260 $c2005
520 $aPhakopsora pachyrhizi is a fairly new pathogen in South America and has become a serious threat for soybean production in the region (3). During May 2004, soybean (Glycine max) leaves with rust symptoms were observed on an experimental trial at La Estanzuela, National Institute for Agricultural Research in Colonia, southwestern Uruguay, on late-maturing genotypes (R7 stage). Small, necrotic, reddish brown lesions, suggestive of soybean rust, were detected on the upper surface of leaves. Uredinia and urediniospores were found on the underside of the leaves. The National Service of Plant Health (DGSA) was informed immediately. There the genus Phakopsora was confirmed on the basis of urediniospore morphology. These spores were minutely equinulated and measured 21 × 26.3 ?m (range 18 to 24 and 22 to 30 ?m, respectively), which was within the range described by Ono et al. (2). Leaf samples showing rust symptoms were submitted to the Instituto Ewald A. Favret (Instituto Nacional de Tecnología Agropecuaria, Argentina) for polymerase chain reaction assay using primer pairs Ppa1/Ppa2 (P. pachyrhizi) and Pme1/Pme2 (P. meibomiae) (1). Results showed P. pachyrhizi as the causal agent of soybean rust, while P. meibomiae tests yielded negative results. Pathogenicity tests were carried out on 10 V4 soybean plants, cv. Don Mario 5800, grown in the greenhouse at 20 to 22°C and a 14-h photoperiod. Urediniospores were collected with a cyclone spore collector into glass tubes, which were then filled with nonphytotoxic light industrial oil. Spore suspension was atomized onto eight plants, while two plants were sprayed only with oil as controls. Plants were placed in a dew chamber at 20°C and 100% relative humidity for 20 h and then returned to prior conditions. Symptoms of the disease were reproduced 10 days after inoculation. Two or three sporulating uredinia were observed only on the inoculated plants. Soybean rust caused by P. pachyrhizi was officially recognized as present in Uruguay in August 2004. © 2007 The American Phytopathological Society
650 $aROYA
650 $aSOJA
653 $aPHAKOPSORA PACHYRHIZI
700 1 $aGUILLIN, E. A.
700 1 $aDÍAZ, L.
773 $tPlant Disease, August 2005, Volume 89, Number 8, Page 909. https://doi.org/10.1094/PD-89-0909C -- OPEN ACCESS.
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Registro original : |
INIA Las Brujas (LB) |
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| Registros recuperados : 121 | |
| 54. |  | STEWART, S.; ABEYSEKARA, N.; ROBERTSON, A.E. Pathotype and genetic shifts in a population of Phytophthora sojae under cultivar rotation. Plant Disease, Mayo 2014, v. 98, n. 5, p. 614-624. In: OOMYCETE MOLECULAR GENETIC NETWORK MEETING, 14., 2013 Pacific Grove, CA, US. Poster presentations. [s.l.]: OMGN, 2013.
Accepted for publication 16 November 2013.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : A - 1 |
| Biblioteca(s): INIA La Estanzuela. |
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| 55. | | STEWART, S.; ABEYSEKARA, N.; ROBERTSON, A.E. Pathotype and genetic shifts in a population of Phytophthora sojae under soybean cultivar rotation. Plant Disease, 2014, v.98, no.5, p. 614-624. In: OOMYCETE MOLECULAR GENETIC NETWORK MEETING, 14., 2013 Pacific Grove, CA, US. Poster presentations. [s.l.]: OMGN, 2013| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : A - 1 |
| Biblioteca(s): INIA Las Brujas. |
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| 56. | | STEWART, S.; RODRIGUEZ, M.; YAMANAKA, N. Pathotypic variation of Phakopsora pachyrhizi isolates from Uruguay. Tropical Plant Pathology, 2019, Volume 44, pages 309-317. Doi: https://doi.org/10.1007/s40858-018-0269-2 Article History: Received: 24 September 2018/Accepted: 27 November 2018/First Online: 02 January 2019. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s40858-018-0269-2) contains supplementary...| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
| Biblioteca(s): INIA La Estanzuela. |
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| Registros recuperados : 121 | |
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