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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
21/10/2014 |
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Actualizado : |
28/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
STEWART, S.; ABEYSEKARA, N.; ROBERTSON, A.E. |
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Afiliación : |
SILVINA MARIA STEWART SONEIRA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Pathotype and genetic shifts in a population of Phytophthora sojae under soybean cultivar rotation. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
Plant Disease, 2014, v.98, no.5, p. 614-624. |
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DOI : |
10.1094/PDIS-05-13-0575-RE |
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Idioma : |
Inglés |
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Notas : |
In: OOMYCETE MOLECULAR GENETIC NETWORK MEETING, 14., 2013 Pacific Grove, CA, US. Poster presentations. [s.l.]: OMGN, 2013 |
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Contenido : |
ABSTRACT.
Changes in pathotype structure of Phytophthora sojae populations have been attributed to deployment of race-specific resistant Rps genes in soybean that have been incorporated into commercial cultivars to reduce losses due to Phytophthora root and stem rot. To test this hypothesis, a cultivar rotation study was established from 2007 through 2010 in microplots at a site in Iowa with no history of soybean cultivation. All microplots were inoculated with P. sojae isolate PR1, race 1 (vir 7) prior to planting in year 1. Six rotations were tested: (i) continuous planting of a P. sojae-susceptible cultivar, (ii) continuous planting of a cultivar with high partial resistance to the pathogen, (iii) continuous planting of a cultivar with the Rps 1k gene, (iv) annual rotation of a susceptible with a resistant cultivar, (v) annual rotation of a partially resistant cultivar with a cultivar with the Rps 1k gene, and (vi) 4-year rotation of cultivars with Rps 1k, 1c, 3a, and 1k genes in year one, two, three, and four, respectively. The diversity of 121 isolates of P. sojae that were recovered by baiting from soil samples collected from the experiment were assessed using pathotyping and eight microsatellite markers, and compared with PR1. Changes in pathotype and multilocus genotypes (MLGs) were recorded at the second sampling date, indicating that P. sojae has the ability to evolve quickly. In total, 14 pathotypes and 21 MLGs were recovered over the 4-year experiment, and only 49 and 22% of the isolates had the same pathotype and MLG, respectively, as PR1. The number of isolates of P. sojae recovered varied among rotations, with more isolates recovered from rotations that included a cultivar with partial resistance. Gain of virulence was detected on Rps 1a, 1b, 1c, 1d, and 3a and was not dependent on rotation. Using simple-sequence repeat analysis, 10 alleles that were different from those of PR1 were detected throughout the 4-year period. Cultivar rotation affected the genetic structure of the P. sojae population. Recovery of isolates with different MLGs, genotypic diversity (G = 4.7), and gene diversity (UHe = 0.45) were greater under continuous rotation with partial resistance. Phytophthora root and stem rot causes economic losses in the north-central region of the United States annually. An improved understanding of the effect of Rps gene deployment on P. sojae diversity would lead to improved management practices and reduced losses.
© 2014 The American Phytopathological Society. MenosABSTRACT.
Changes in pathotype structure of Phytophthora sojae populations have been attributed to deployment of race-specific resistant Rps genes in soybean that have been incorporated into commercial cultivars to reduce losses due to Phytophthora root and stem rot. To test this hypothesis, a cultivar rotation study was established from 2007 through 2010 in microplots at a site in Iowa with no history of soybean cultivation. All microplots were inoculated with P. sojae isolate PR1, race 1 (vir 7) prior to planting in year 1. Six rotations were tested: (i) continuous planting of a P. sojae-susceptible cultivar, (ii) continuous planting of a cultivar with high partial resistance to the pathogen, (iii) continuous planting of a cultivar with the Rps 1k gene, (iv) annual rotation of a susceptible with a resistant cultivar, (v) annual rotation of a partially resistant cultivar with a cultivar with the Rps 1k gene, and (vi) 4-year rotation of cultivars with Rps 1k, 1c, 3a, and 1k genes in year one, two, three, and four, respectively. The diversity of 121 isolates of P. sojae that were recovered by baiting from soil samples collected from the experiment were assessed using pathotyping and eight microsatellite markers, and compared with PR1. Changes in pathotype and multilocus genotypes (MLGs) were recorded at the second sampling date, indicating that P. sojae has the ability to evolve quickly. In total, 14 pathotypes and 21 MLGs were recovered over the 4-year experiment, and only... Presentar Todo |
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Palabras claves : |
CULTIVAR ROTATION; GENETIC SHIFTS; PHYTOPHTORA SOJAE. |
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Thesagro : |
FITOPATOLOGÍA; PHYTOPHTHORA; SOJA. |
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Asunto categoría : |
H20 Enfermedades de las plantas |
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URL : |
https://apsjournals.apsnet.org/doi/pdf/10.1094/PDIS-05-13-0575-RE
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Marc : |
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001 1051215
005 2019-10-28
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1094/PDIS-05-13-0575-RE$2DOI
100 1 $aSTEWART, S.
245 $aPathotype and genetic shifts in a population of Phytophthora sojae under soybean cultivar rotation.$h[electronic resource]
260 $c2014
500 $aIn: OOMYCETE MOLECULAR GENETIC NETWORK MEETING, 14., 2013 Pacific Grove, CA, US. Poster presentations. [s.l.]: OMGN, 2013
520 $aABSTRACT. Changes in pathotype structure of Phytophthora sojae populations have been attributed to deployment of race-specific resistant Rps genes in soybean that have been incorporated into commercial cultivars to reduce losses due to Phytophthora root and stem rot. To test this hypothesis, a cultivar rotation study was established from 2007 through 2010 in microplots at a site in Iowa with no history of soybean cultivation. All microplots were inoculated with P. sojae isolate PR1, race 1 (vir 7) prior to planting in year 1. Six rotations were tested: (i) continuous planting of a P. sojae-susceptible cultivar, (ii) continuous planting of a cultivar with high partial resistance to the pathogen, (iii) continuous planting of a cultivar with the Rps 1k gene, (iv) annual rotation of a susceptible with a resistant cultivar, (v) annual rotation of a partially resistant cultivar with a cultivar with the Rps 1k gene, and (vi) 4-year rotation of cultivars with Rps 1k, 1c, 3a, and 1k genes in year one, two, three, and four, respectively. The diversity of 121 isolates of P. sojae that were recovered by baiting from soil samples collected from the experiment were assessed using pathotyping and eight microsatellite markers, and compared with PR1. Changes in pathotype and multilocus genotypes (MLGs) were recorded at the second sampling date, indicating that P. sojae has the ability to evolve quickly. In total, 14 pathotypes and 21 MLGs were recovered over the 4-year experiment, and only 49 and 22% of the isolates had the same pathotype and MLG, respectively, as PR1. The number of isolates of P. sojae recovered varied among rotations, with more isolates recovered from rotations that included a cultivar with partial resistance. Gain of virulence was detected on Rps 1a, 1b, 1c, 1d, and 3a and was not dependent on rotation. Using simple-sequence repeat analysis, 10 alleles that were different from those of PR1 were detected throughout the 4-year period. Cultivar rotation affected the genetic structure of the P. sojae population. Recovery of isolates with different MLGs, genotypic diversity (G = 4.7), and gene diversity (UHe = 0.45) were greater under continuous rotation with partial resistance. Phytophthora root and stem rot causes economic losses in the north-central region of the United States annually. An improved understanding of the effect of Rps gene deployment on P. sojae diversity would lead to improved management practices and reduced losses. © 2014 The American Phytopathological Society.
650 $aFITOPATOLOGÍA
650 $aPHYTOPHTHORA
650 $aSOJA
653 $aCULTIVAR ROTATION
653 $aGENETIC SHIFTS
653 $aPHYTOPHTORA SOJAE
700 1 $aABEYSEKARA, N.
700 1 $aROBERTSON, A.E.
773 $tPlant Disease, 2014$gv.98, no.5, p. 614-624.
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Registro original : |
INIA Las Brujas (LB) |
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| 386. |  | BOU, N.; DARDANELLI, S.; OLIVERA, L.; TELLECHEA, G.; ADDY ORDUNA, L.; CANAVELLI, S.; RODRÍGUEZ, E. Desarrollo de un método para evaluar el daño ocasionado por aves en cultivos comerciales de soja recién emergida. [Development of a method for assessing damage caused by birds in sprouting soybean in commercial crops.] IDESIA (Chile), 2016, v.34, no.6, p.67-74. OPEN ACCESS.| Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : B - 2 |
| Biblioteca(s): INIA Las Brujas. |
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| 389. | | DIAZ, R. Investigación en labranza reducida en Uruguay. ln: Caballero Delpino, H. ; Díaz, R. (eds). Seminario Labranza Reducida en el Cono Sur. La Estanzuela, Colonia (Uruguay): CIAAB, IICA, Mayo 1982. p.139-148.| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA La Estanzuela. |
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| 393. | | ZERBINO, M.S.; ALZUGARAY, R. Soja: Plagas In: GIMÉNEZ, A.; RESTAINO, E. (Eds.). Girasol y soja : algunos aspectos tecnológicos de producción para el litoral oeste de Uruguay. Montevideo (Uruguay): INIA, 1994. p119-142 (INIA Boletin de Divulgación; 47) Convenio INIA - Cámara de Aceites Comestibles - Facultad de Agronomía| Tipo: Capítulo en Libro Técnico-Científico |
| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
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| 395. | | GASO, D.; CAPURRO, M.C. Potential yield of contrasting soybean maturity groups in Southern Uruguayan conditions: abstract. Agrociencia Uruguay, v. 19, special issue "Inter-Regional CIGR Conference on Land and Water Challenges, 3., La Estanzuela, Colonia, UY. Tools for developing; "Dr. Mario García Petillo"", p. 36, 2015. En versión electrónica difiere la paginación: Agrociencia Uruguay, v. 19, special issue, p. 39, 2015.| Tipo: Trabajos en Congresos/Conferencias |
| Biblioteca(s): INIA La Estanzuela. |
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| 396. | | 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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| 399. | | CIAAB (CENTRO DE INVESTIGACIONES AGRICOLAS "ALBERTO BOERGER"); OLMOS, F.; FORMOSO, F.; ALLEGRI, M.; PITTALUGA, O.; PÉREZ GOMAR, E.; CHEBATAROFF, N.; DEAMBROSI, E.; BLANCO, P.H. Trabajos presentados. JORNADA AGRÍCOLA - GANADERA DE CARAGUATÁ, 1., 31 AGOSTO, 1983, TACUAREMBÓ, URUGUAY. Tacuarembó (Uruguay): CIAAB, 1983. 130 p.| Biblioteca(s): INIA Tacuarembó. |
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| Registros recuperados : 478 | |
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