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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
29/09/2014 |
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Actualizado : |
24/06/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
FEDERICI, M.; MARCONDES, J.A.; PICCHI, S.C.; STUCHI, E.S.; FADEL, A.L.; LAIA, M.L.; LEMOS, M.V.F. |
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Afiliación : |
MARIA TERESA FEDERICI RODRIGUEZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Xylella fastidiosa: An in vivo system to study possible survival strategies within citrus xylem vessels based on global gene expression analysis. |
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Fecha de publicación : |
2012 |
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Fuente / Imprenta : |
Electronic Journal of Biotechnology, 2012, v.15, no.3, p.1-33. |
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ISSN : |
0717-3458 |
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DOI : |
http://dx.doi.org/10.2225/vol15-issue3-fulltext-4 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT.
Xylella fastidiosa inhabits the plant xylem, a nutrient-poor environment, so that mechanisms to sense and respond to adverse environmental conditions are extremely important for bacterial survival in the plant host. Although the complete genome sequences of different Xylella strains have been determined, little is known about stress responses and gene regulation in these organisms. In this work, a DNA microarray was constructed containing 2,600 ORFs identified in the genome sequencing project of Xylella fastidiosa 9a5c strain, and used to check global gene expression differences in the bacteria when it is infecting a symptomatic and a tolerant citrus tree. Different patterns of expression were found in each variety, suggesting that bacteria are responding differentially according to each plant xylem environment. The global gene expression profile was determined and several genes related to bacterial survival in stressed conditions were found to be differentially expressed between varieties, suggesting the involvement of different strategies for adaptation to the environment. The expression pattern of some genes related to the heat shock response, toxin and detoxification processes, adaptation to atypical conditions, repair systems as well as some regulatory genes are discussed in this paper. DNA microarray proved to be a powerful technique for global transcriptome analyses. This is one of the first studies of Xylella fastidiosa gene expression in vivo which helped to increase insight into stress responses and possible bacterial survival mechanisms in the nutrient-poor environment of xylem vessels. MenosABSTRACT.
Xylella fastidiosa inhabits the plant xylem, a nutrient-poor environment, so that mechanisms to sense and respond to adverse environmental conditions are extremely important for bacterial survival in the plant host. Although the complete genome sequences of different Xylella strains have been determined, little is known about stress responses and gene regulation in these organisms. In this work, a DNA microarray was constructed containing 2,600 ORFs identified in the genome sequencing project of Xylella fastidiosa 9a5c strain, and used to check global gene expression differences in the bacteria when it is infecting a symptomatic and a tolerant citrus tree. Different patterns of expression were found in each variety, suggesting that bacteria are responding differentially according to each plant xylem environment. The global gene expression profile was determined and several genes related to bacterial survival in stressed conditions were found to be differentially expressed between varieties, suggesting the involvement of different strategies for adaptation to the environment. The expression pattern of some genes related to the heat shock response, toxin and detoxification processes, adaptation to atypical conditions, repair systems as well as some regulatory genes are discussed in this paper. DNA microarray proved to be a powerful technique for global transcriptome analyses. This is one of the first studies of Xylella fastidiosa gene expression in vivo which helped... Presentar Todo |
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Thesagro : |
CITRUS; CYDIA. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02405naa a2200241 a 4500
001 1050705
005 2021-06-24
008 2012 bl uuuu u00u1 u #d
022 $a0717-3458
024 7 $ahttp://dx.doi.org/10.2225/vol15-issue3-fulltext-4$2DOI
100 1 $aFEDERICI, M.
245 $aXylella fastidiosa$bAn in vivo system to study possible survival strategies within citrus xylem vessels based on global gene expression analysis.$h[electronic resource]
260 $c2012
520 $aABSTRACT. Xylella fastidiosa inhabits the plant xylem, a nutrient-poor environment, so that mechanisms to sense and respond to adverse environmental conditions are extremely important for bacterial survival in the plant host. Although the complete genome sequences of different Xylella strains have been determined, little is known about stress responses and gene regulation in these organisms. In this work, a DNA microarray was constructed containing 2,600 ORFs identified in the genome sequencing project of Xylella fastidiosa 9a5c strain, and used to check global gene expression differences in the bacteria when it is infecting a symptomatic and a tolerant citrus tree. Different patterns of expression were found in each variety, suggesting that bacteria are responding differentially according to each plant xylem environment. The global gene expression profile was determined and several genes related to bacterial survival in stressed conditions were found to be differentially expressed between varieties, suggesting the involvement of different strategies for adaptation to the environment. The expression pattern of some genes related to the heat shock response, toxin and detoxification processes, adaptation to atypical conditions, repair systems as well as some regulatory genes are discussed in this paper. DNA microarray proved to be a powerful technique for global transcriptome analyses. This is one of the first studies of Xylella fastidiosa gene expression in vivo which helped to increase insight into stress responses and possible bacterial survival mechanisms in the nutrient-poor environment of xylem vessels.
650 $aCITRUS
650 $aCYDIA
700 1 $aMARCONDES, J.A.
700 1 $aPICCHI, S.C.
700 1 $aSTUCHI, E.S.
700 1 $aFADEL, A.L.
700 1 $aLAIA, M.L.
700 1 $aLEMOS, M.V.F.
773 $tElectronic Journal of Biotechnology, 2012$gv.15, no.3, p.1-33.
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Registro original : |
INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
08/09/2014 |
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Actualizado : |
04/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
B - 1 |
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Autor : |
HOFFMAN, E.; VIEGA, L.; GLISON, N.; CASTRO, A.; PEREYRA, S.; PÉREZ, C. |
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Afiliación : |
SILVIA ANTONIA PEREYRA CORREA, INIA La Estanzuela. |
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Título : |
Differential effects of spot blotch on photosynthesis and grain yield in two barley cultivars. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
European Journal of Plant Pathology, v. 139, n. 3, p. 471-480, 2014. |
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ISSN : |
0929-1873. |
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DOI : |
10.1007/s10658-014-0404-y |
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Idioma : |
Inglés |
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Notas : |
Article history: Accepted: 12 February 2014 /Published online: 27 February 2014. |
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Contenido : |
ABSTRACT.
Barley spot blotch (SB), caused by Cochliobolus sativus, is an important barley disease which causes extensive grain yield losses. These losses may not always correlate directly with the amount of diseased leaf area. Two barley cultivars, Quebracho (susceptible to SB) and Carumbé (with intermediate susceptibility to SB), were compared in field experiments in 2003, 2004 and 2006. Plots of each cultivar were either inoculated with C. sativus or protected with fungicide under field conditions to generate contrasting treatments: i) diseased, and ii) free of disease, respectively. SB severity over the growing season, photosynthetic rate on leaves with no visible symptoms and grain yield were assessed for each treatment and year. There was no treatment effect on cv. Carumbé, while cv. Quebracho showed a significant yield reduction, even though SB severity during the grain filling period was <10 %. This yield reduction was associated with a reduced photosynthetic rate at the beginning of the grain filling period in cv. Quebracho. A similar experiment was conducted under greenhouse conditions, adding a treatment without inoculum or fungicide. There were no differences in photosynthetic rate or grain yield per plant among treatments. These results suggest a distinct physiological response to SB infection among cultivars affecting leaf photosynthetic rate, and SB severity may not be the best estimator of yield losses caused by SB. |
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Palabras claves : |
COCHLIOBOLUS SATIVUS; HORDEUM; PHOTOSYNTHESIS; RENDIMIENTO EN GRANO; YIELD LOSSES. |
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Thesagro : |
FITOPATOLOGÍA. |
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Asunto categoría : |
H20 Enfermedades de las plantas |
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Marc : |
LEADER 02358naa a2200289 a 4500
001 1050032
005 2019-10-04
008 2014 bl uuuu u00u1 u #d
022 $a0929-1873.
024 7 $a10.1007/s10658-014-0404-y$2DOI
100 1 $aHOFFMAN, E.
245 $aDifferential effects of spot blotch on photosynthesis and grain yield in two barley cultivars.$h[electronic resource]
260 $c2014
500 $aArticle history: Accepted: 12 February 2014 /Published online: 27 February 2014.
520 $aABSTRACT. Barley spot blotch (SB), caused by Cochliobolus sativus, is an important barley disease which causes extensive grain yield losses. These losses may not always correlate directly with the amount of diseased leaf area. Two barley cultivars, Quebracho (susceptible to SB) and Carumbé (with intermediate susceptibility to SB), were compared in field experiments in 2003, 2004 and 2006. Plots of each cultivar were either inoculated with C. sativus or protected with fungicide under field conditions to generate contrasting treatments: i) diseased, and ii) free of disease, respectively. SB severity over the growing season, photosynthetic rate on leaves with no visible symptoms and grain yield were assessed for each treatment and year. There was no treatment effect on cv. Carumbé, while cv. Quebracho showed a significant yield reduction, even though SB severity during the grain filling period was <10 %. This yield reduction was associated with a reduced photosynthetic rate at the beginning of the grain filling period in cv. Quebracho. A similar experiment was conducted under greenhouse conditions, adding a treatment without inoculum or fungicide. There were no differences in photosynthetic rate or grain yield per plant among treatments. These results suggest a distinct physiological response to SB infection among cultivars affecting leaf photosynthetic rate, and SB severity may not be the best estimator of yield losses caused by SB.
650 $aFITOPATOLOGÍA
653 $aCOCHLIOBOLUS SATIVUS
653 $aHORDEUM
653 $aPHOTOSYNTHESIS
653 $aRENDIMIENTO EN GRANO
653 $aYIELD LOSSES
700 1 $aVIEGA, L.
700 1 $aGLISON, N.
700 1 $aCASTRO, A.
700 1 $aPEREYRA, S.
700 1 $aPÉREZ, C.
773 $tEuropean Journal of Plant Pathology$gv. 139, n. 3, p. 471-480, 2014.
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