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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
05/12/2018 |
Actualizado : |
05/12/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
QUERO, G.; BONNECARRERE, V.; FERNÁNDEZ, S.; SILVA, P.; SIMONDI, S.; BORSANI, O. |
Afiliación : |
GASTÓN QUERO CORRALLO, Universidad de la República (UdelaR)/ Facultad de Agronomía; INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA VICTORIA BONNECARRERE MARTINEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SEBASTIÁN FERNÁNDEZ, Universidad de la República (UdelaR)/ Facultad de Ingeniería; PEDRO SILVA, Universidad de la República (UdelaR)/ Facultad de Agronomía; SEBASTIÁN SIMONDI, Universidad Nacional de Cuyo (FCEN-UNCuyo), Argentina; OMAR BORSANI, Universidad de la República (UdelaR)/ Facultad de Agronomía. |
Título : |
Light-use efficiency and energy partitioning in rice is cultivar dependent. |
Fecha de publicación : |
2018 |
Fuente / Imprenta : |
Photosynthesis Research, 2018. |
ISSN : |
0166-8595 |
DOI : |
10.1007/s11120-018-0605-x |
Idioma : |
Inglés |
Notas : |
Article history: Received 29 August 2018 // Accepted 12 November 2018 // First Online 17 November 2018.
Electronic supplementary material: The online version of this article contains supplementary material, which is available to authorized users.
Acknowledgements: The authors would like to acknowledge the Agencia Nacional de Investigación e Innovación (ANII) which funded the Doctoral Scholarship of Gaston Quero (POS_NAC_2012_1_8560). This research was also funded by an INIA Project named “Desarrollo de una plataforma de fenotipado como base para la mejora de la tolerancia a estrés ambiental de cultivos y ajuste de modelos de simulación” (L4_10_1_AZ_BT_GT1_8850), and by Grupo Comisión Sectorial de Investigación Científica (CSIC I+D 418). |
Contenido : |
ABSTRACT.
One of the main limitations of rice yield in regions of high productive performance is the light-use efficiency (LUE). LUE can be determined at the whole-plant level or at the photosynthetic apparatus level (quantum yield). Both vary according to the intensity and spectral quality of light. The aim of this study was to analyze the cultivar dependence regarding LUE at the plant level and quantum yield using four rice cultivars and four light environments. To achieve this, two in-house Light Systems were developed: Light System I which generates white light environments (spectral quality of 400?700 nm band) and Light System II which generates a blue-red light environment (spectral quality of 400?500 nm and 600?700 nm bands). Light environment conditioned the LUE and quantum yield in PSII of all evaluated cultivars. In white environments, LUE decreased when light intensity duplicated, while in blue-red environments no differences on LUE were observed. Energy partition in PSII was determined by the quantum yield of three de-excitation processes using chlorophyll fluorescence parameters. For this purpose, a quenching analysis followed by a relaxation analysis was performed. The damage of PSII was only increased by low levels of energy in white environments, leading to a decrease in photochemical processes due to the closure of the reaction centers. In conclusion, all rice cultivars evaluated in this study were sensible to low levels of radiation, but the response was cultivar dependent. There was not a clear genotypic relation between LUE and quantum yield.
© 2018, Springer Nature B.V. MenosABSTRACT.
One of the main limitations of rice yield in regions of high productive performance is the light-use efficiency (LUE). LUE can be determined at the whole-plant level or at the photosynthetic apparatus level (quantum yield). Both vary according to the intensity and spectral quality of light. The aim of this study was to analyze the cultivar dependence regarding LUE at the plant level and quantum yield using four rice cultivars and four light environments. To achieve this, two in-house Light Systems were developed: Light System I which generates white light environments (spectral quality of 400?700 nm band) and Light System II which generates a blue-red light environment (spectral quality of 400?500 nm and 600?700 nm bands). Light environment conditioned the LUE and quantum yield in PSII of all evaluated cultivars. In white environments, LUE decreased when light intensity duplicated, while in blue-red environments no differences on LUE were observed. Energy partition in PSII was determined by the quantum yield of three de-excitation processes using chlorophyll fluorescence parameters. For this purpose, a quenching analysis followed by a relaxation analysis was performed. The damage of PSII was only increased by low levels of energy in white environments, leading to a decrease in photochemical processes due to the closure of the reaction centers. In conclusion, all rice cultivars evaluated in this study were sensible to low levels of radiation, but the response was cu... Presentar Todo |
Palabras claves : |
ENERGY DISSIPATION; QUANTUM YIELDS; QUENCHING ANALYSES; RELAXATION ANALYSES. |
Asunto categoría : |
-- |
Marc : |
LEADER 03097naa a2200265 a 4500 001 1059334 005 2018-12-05 008 2018 bl uuuu u00u1 u #d 022 $a0166-8595 024 7 $a10.1007/s11120-018-0605-x$2DOI 100 1 $aQUERO, G. 245 $aLight-use efficiency and energy partitioning in rice is cultivar dependent.$h[electronic resource] 260 $c2018 500 $aArticle history: Received 29 August 2018 // Accepted 12 November 2018 // First Online 17 November 2018. Electronic supplementary material: The online version of this article contains supplementary material, which is available to authorized users. Acknowledgements: The authors would like to acknowledge the Agencia Nacional de Investigación e Innovación (ANII) which funded the Doctoral Scholarship of Gaston Quero (POS_NAC_2012_1_8560). This research was also funded by an INIA Project named “Desarrollo de una plataforma de fenotipado como base para la mejora de la tolerancia a estrés ambiental de cultivos y ajuste de modelos de simulación” (L4_10_1_AZ_BT_GT1_8850), and by Grupo Comisión Sectorial de Investigación Científica (CSIC I+D 418). 520 $aABSTRACT. One of the main limitations of rice yield in regions of high productive performance is the light-use efficiency (LUE). LUE can be determined at the whole-plant level or at the photosynthetic apparatus level (quantum yield). Both vary according to the intensity and spectral quality of light. The aim of this study was to analyze the cultivar dependence regarding LUE at the plant level and quantum yield using four rice cultivars and four light environments. To achieve this, two in-house Light Systems were developed: Light System I which generates white light environments (spectral quality of 400?700 nm band) and Light System II which generates a blue-red light environment (spectral quality of 400?500 nm and 600?700 nm bands). Light environment conditioned the LUE and quantum yield in PSII of all evaluated cultivars. In white environments, LUE decreased when light intensity duplicated, while in blue-red environments no differences on LUE were observed. Energy partition in PSII was determined by the quantum yield of three de-excitation processes using chlorophyll fluorescence parameters. For this purpose, a quenching analysis followed by a relaxation analysis was performed. The damage of PSII was only increased by low levels of energy in white environments, leading to a decrease in photochemical processes due to the closure of the reaction centers. In conclusion, all rice cultivars evaluated in this study were sensible to low levels of radiation, but the response was cultivar dependent. There was not a clear genotypic relation between LUE and quantum yield. © 2018, Springer Nature B.V. 653 $aENERGY DISSIPATION 653 $aQUANTUM YIELDS 653 $aQUENCHING ANALYSES 653 $aRELAXATION ANALYSES 700 1 $aBONNECARRERE, V. 700 1 $aFERNÁNDEZ, S. 700 1 $aSILVA, P. 700 1 $aSIMONDI, S. 700 1 $aBORSANI, O. 773 $tPhotosynthesis Research, 2018.
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
24/01/2017 |
Tipo de producción científica : |
Serie Técnica |
Autor : |
MEDEROS, A. |
Afiliación : |
AMERICA ESTHER MEDEROS SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Brucelosis ovina: estudio epidemiológico y económico de Brucella ovis en el Departamento de Tacuarembó, Uruguay |
Fecha de publicación : |
1995 |
Fuente / Imprenta : |
Montevideo (Uruguay): INIA, 1995. |
Páginas : |
16 p. |
Serie : |
(INIA Serie Técnica ; 69) |
ISBN : |
9974-38-050-2 |
ISSN : |
1688-9266 |
Idioma : |
Español |
Contenido : |
Un relevamiento epidemiológico de Brucelosis ovina (epididimitis contagiosa de los carneros), ha sido llevado a cabo en el departamento de Tacuarembó, donde la
producción ovina ocupa un lugar preponderante. Mil quinientos veintinueve carneros fueron estudiados tanto clínica como serológicamente. Las muestras de suero
extraídas fueron analizadas por las técnicas de ELISA y Gel Difusión en Agar. De los 1529 carneros estudiados, 179 resultaron positivos a la técnica de ELISA y 168 lo
fueron con la de Gel Difusión. Un resultado de 0,68 en el test estadístico de Kappa, mostró una buena concordancia cuando se compararon los resultados de ambas
pruebas. Los resultados obtenidos de este relevamiento indican que la infección a B. ovis tiene una prevalencia importante en el departamento, causando importantes
pérdidas económicas en la producción ovina. |
Thesagro : |
ANALISIS ECONOMICO; BRUCELLA OVIS; BRUCELOSIS; CONTROL DE ENFERMEDADES; ELISA; ENFERMEDADES DE LOS ANIMALES; OVINOS; TECNICAS INMUNOLOGICAS. |
Asunto categoría : |
-- L73 Enfermedades de los animales |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2974/1/111219240807134949.pdf
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Marc : |
LEADER 01599nam a2200253 a 4500 001 1002782 005 2017-01-24 008 1995 bl uuuu u00u1 u #d 020 $a9974-38-050-2 022 $a1688-9266 100 1 $aMEDEROS, A. 245 $aBrucelosis ovina$bestudio epidemiológico y económico de Brucella ovis en el Departamento de Tacuarembó, Uruguay 260 $aMontevideo (Uruguay): INIA$c1995 300 $a16 p. 490 $a(INIA Serie Técnica ; 69) 520 $aUn relevamiento epidemiológico de Brucelosis ovina (epididimitis contagiosa de los carneros), ha sido llevado a cabo en el departamento de Tacuarembó, donde la producción ovina ocupa un lugar preponderante. Mil quinientos veintinueve carneros fueron estudiados tanto clínica como serológicamente. Las muestras de suero extraídas fueron analizadas por las técnicas de ELISA y Gel Difusión en Agar. De los 1529 carneros estudiados, 179 resultaron positivos a la técnica de ELISA y 168 lo fueron con la de Gel Difusión. Un resultado de 0,68 en el test estadístico de Kappa, mostró una buena concordancia cuando se compararon los resultados de ambas pruebas. Los resultados obtenidos de este relevamiento indican que la infección a B. ovis tiene una prevalencia importante en el departamento, causando importantes pérdidas económicas en la producción ovina. 650 $aANALISIS ECONOMICO 650 $aBRUCELLA OVIS 650 $aBRUCELOSIS 650 $aCONTROL DE ENFERMEDADES 650 $aELISA 650 $aENFERMEDADES DE LOS ANIMALES 650 $aOVINOS 650 $aTECNICAS INMUNOLOGICAS
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