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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 : |
25/09/2020 |
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Actualizado : |
12/08/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
VANDEGEER, R.K.; ZHAO, C.; CIBILS-STEWART, X.; WUHRER, R.; HALL, C.R.; HARTLEY, S.E.; TISSUE, D.T.; JOHNSON, S.N. |
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Afiliación : |
REBECCA K. VANDEGEERA, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; CHENCHEN ZHAO, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; XIMENA CIBILS-STEWART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RICHARD WUHRER, Advanced Materials Characterisation Facility (AMCF), Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; CASEY R. HALL, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; SUSAN E. HARTLEY, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, UK.; DAVID T. TISSUE, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; SCOTT N. JOHNSON, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia. |
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Título : |
Silicon deposition on guard cells increases stomatal sensitivity as mediated by K+ efflux and consequently reduces stomatal conductance. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Physiologia Plantarum, Volume 171, Issue 3, Pages 358-370, March 2021. Doi: https://doi.org/10.1111/ppl.13202 |
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DOI : |
doi.org/10.1111/ppl.13202 |
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Idioma : |
Inglés |
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Notas : |
Article history: First published: 03 September 2020/Version of Record online:16 September 2020/Accepted manuscript online:
03 September 2020/Manuscript accepted:01 September 2020/Manuscript revised:27 August 2020/Manuscript received:30 June 2020/First published: 03 September 2020. Corresponding author: e-mail: R.Vandegeer@westernsydney.edu.au |
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Contenido : |
Abstract: Silicon (Si) has been widely reported to improve plant resistance to water stress via various mechanisms including cuticular Si deposition to reduce leaf transpiration. However, there is limited understanding of the effects of Si on stomatal physiology, including the underlying mechanisms and implications for resistance to water stress. We grew tall fescue (Festuca arundinacea Schreb. cv. Fortuna) hydroponically, with or without Si, and treated half of the plants with 20% polyethylene glycol (PEG) to impose physiological drought (osmotic stress). Scanning electron microscopy (SEM) in conjunction with X-ray mapping (XRM) found that Si was deposited on stomatal guard cells and as a sub-cuticular layer in Si-treated plants. Plants grown in Si had a 28% reduction in stomatal conductance and a 23% reduction in cuticular conductance. When abscisic acid was applied exogenously to epidermal leaf peels to promote stomatal closure, Si plants had 19% lower stomatal aperture compared to control plants (i.e.increased stomatal sensitivity) and an increased efflux of guard cell K+ ions. However, the changes in stomatal physiology with Si were not substantial enough to improve water stress resistance, as shown by a lack of significant effect of Si on water potential, growth, photosynthesis and water-use efficiency.
Our findings suggest a novel underlying mechanism for reduced stomatal conductance with Si application; specifically, that Si deposition on stomatal guard cells promotes greater stomatal sensitivity as mediated by guard cell K+ efflux. MenosAbstract: Silicon (Si) has been widely reported to improve plant resistance to water stress via various mechanisms including cuticular Si deposition to reduce leaf transpiration. However, there is limited understanding of the effects of Si on stomatal physiology, including the underlying mechanisms and implications for resistance to water stress. We grew tall fescue (Festuca arundinacea Schreb. cv. Fortuna) hydroponically, with or without Si, and treated half of the plants with 20% polyethylene glycol (PEG) to impose physiological drought (osmotic stress). Scanning electron microscopy (SEM) in conjunction with X-ray mapping (XRM) found that Si was deposited on stomatal guard cells and as a sub-cuticular layer in Si-treated plants. Plants grown in Si had a 28% reduction in stomatal conductance and a 23% reduction in cuticular conductance. When abscisic acid was applied exogenously to epidermal leaf peels to promote stomatal closure, Si plants had 19% lower stomatal aperture compared to control plants (i.e.increased stomatal sensitivity) and an increased efflux of guard cell K+ ions. However, the changes in stomatal physiology with Si were not substantial enough to improve water stress resistance, as shown by a lack of significant effect of Si on water potential, growth, photosynthesis and water-use efficiency.
Our findings suggest a novel underlying mechanism for reduced stomatal conductance with Si application; specifically, that Si deposition on stomatal guard cells promote... Presentar Todo |
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Palabras claves : |
LEAF WATER POTENTIAL; PHOTOSYNTHESIS; RELATIVE WATER CONTENT; SCANNNG ELECTON MICROSCOPY. |
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Thesagro : |
FESTUCA ARUNDINACEA. |
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Asunto categoría : |
H01 Protección de plantas - Aspectos generales |
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Marc : |
LEADER 02859naa a2200289 a 4500
001 1061345
005 2021-08-12
008 2021 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1111/ppl.13202$2DOI
100 1 $aVANDEGEER, R.K.
245 $aSilicon deposition on guard cells increases stomatal sensitivity as mediated by K+ efflux and consequently reduces stomatal conductance.$h[electronic resource]
260 $c2021
500 $aArticle history: First published: 03 September 2020/Version of Record online:16 September 2020/Accepted manuscript online: 03 September 2020/Manuscript accepted:01 September 2020/Manuscript revised:27 August 2020/Manuscript received:30 June 2020/First published: 03 September 2020. Corresponding author: e-mail: R.Vandegeer@westernsydney.edu.au
520 $aAbstract: Silicon (Si) has been widely reported to improve plant resistance to water stress via various mechanisms including cuticular Si deposition to reduce leaf transpiration. However, there is limited understanding of the effects of Si on stomatal physiology, including the underlying mechanisms and implications for resistance to water stress. We grew tall fescue (Festuca arundinacea Schreb. cv. Fortuna) hydroponically, with or without Si, and treated half of the plants with 20% polyethylene glycol (PEG) to impose physiological drought (osmotic stress). Scanning electron microscopy (SEM) in conjunction with X-ray mapping (XRM) found that Si was deposited on stomatal guard cells and as a sub-cuticular layer in Si-treated plants. Plants grown in Si had a 28% reduction in stomatal conductance and a 23% reduction in cuticular conductance. When abscisic acid was applied exogenously to epidermal leaf peels to promote stomatal closure, Si plants had 19% lower stomatal aperture compared to control plants (i.e.increased stomatal sensitivity) and an increased efflux of guard cell K+ ions. However, the changes in stomatal physiology with Si were not substantial enough to improve water stress resistance, as shown by a lack of significant effect of Si on water potential, growth, photosynthesis and water-use efficiency. Our findings suggest a novel underlying mechanism for reduced stomatal conductance with Si application; specifically, that Si deposition on stomatal guard cells promotes greater stomatal sensitivity as mediated by guard cell K+ efflux.
650 $aFESTUCA ARUNDINACEA
653 $aLEAF WATER POTENTIAL
653 $aPHOTOSYNTHESIS
653 $aRELATIVE WATER CONTENT
653 $aSCANNNG ELECTON MICROSCOPY
700 1 $aZHAO, C.
700 1 $aCIBILS-STEWART, X.
700 1 $aWUHRER, R.
700 1 $aHALL, C.R.
700 1 $aHARTLEY, S.E.
700 1 $aTISSUE, D.T.
700 1 $aJOHNSON, S.N.
773 $tPhysiologia Plantarum, Volume 171, Issue 3, Pages 358-370, March 2021. Doi: https://doi.org/10.1111/ppl.13202
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Registro original : |
INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó; INIA Treinta y Tres. |
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Fecha actual : |
08/04/2015 |
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Actualizado : |
03/02/2018 |
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Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
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Autor : |
DE BARBIERI, I.; MONTOSSI, F.; LUZARDO, S.; SILVEIRA, C.; MEDEROS, A.; PLATERO, P.; BOTTERO, D.; BENTANCURT, M.; ROVIRA, F.; CUADRO, P.; SANCRISTOBAL, L.; MARTINEZ, H.; FRUGONI, J.; LEVRATTO, J. |
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Afiliación : |
LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO FELIPE LUZARDO VILLAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA INES SILVEIRA ROJAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; AMERICA ESTHER MEDEROS SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PABLO NICOLAS PLATERO CLAVIER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SERGIO DANIEL BOTTERO REGGI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MAURO ANDRES BENTANCURT PONTTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FERNANDO ROVIRA GALARRAGA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PABLO ANDRES CUADRO BRAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIS EMILIO SANCRISTOBAL RODRIGUEZ SOTTO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; H. MARTINEZ, INIA; JULIO CESAR FRUGONI SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN CARLOS LEVRATTO CORTES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Mejora de la eficiencia reproductiva ovina en sistemas ganaderos extensivos: estrategias de alimentación y manejo de ovejas y corderos durante la gestación y lactancia. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
In: BERRETTA, E.; MONTOSSI, F.; BRITO, G. (Ed.). Alternativas tecnológicas para los sistemas ganaderos del basalto. Montevideo, UY: INIA, 2014. |
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Páginas : |
p. 359-377 |
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Serie : |
(Serie Técnica; 217) |
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ISSN : |
1688-9266 |
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Idioma : |
Español |
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Contenido : |
Todos los experimentos que se presentan a continuación fueron realizados en la Unidad Experimental Glencoe, ubicada en la región agroecológica de Basalto (32º 01?
32?? latitud Sur, 57º 00? 39?? longitud Oeste y 124 m SNM). El diseño estadístico de los experimentos fue de parcelas al azar. Los resultados de las animales y pasturas
fueron analizados por el procedimiento GLM (SAS Institute Inc. 9.1, 2002-2003) y las medias se contrastaron con el test LSD (P<0,05). Dadas las características de los experimentos, se consideró conveniente utilizar el error del tipo III en los análisis de varianza. Las variables que tuvieron mediciones seriadas en el tiempo se analizaron mediante el procedimiento PROC MIXED y las discretas por el procedimiento CATMOD del SAS (SAS Institute Inc. 9.1, 2002-2003). Cuando correspondió (peso vivo, condición corporal), fue incluida la covariable de estos parámetros. |
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Thesagro : |
CORDERO; GANADERIA EXTENSIVA; GESTACION; NUTRICION ANIMAL; OVEJA; OVINOS. |
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Asunto categoría : |
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L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/4242/1/ST-217p359-377.pdf
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Marc : |
LEADER 02085naa a2200385 a 4500
001 1052428
005 2018-02-03
008 2014 bl uuuu u00u1 u #d
022 $a1688-9266
100 1 $aDE BARBIERI, I.
245 $aMejora de la eficiencia reproductiva ovina en sistemas ganaderos extensivos$bestrategias de alimentación y manejo de ovejas y corderos durante la gestación y lactancia.
260 $c2014
300 $ap. 359-377
490 $a(Serie Técnica; 217)
520 $aTodos los experimentos que se presentan a continuación fueron realizados en la Unidad Experimental Glencoe, ubicada en la región agroecológica de Basalto (32º 01? 32?? latitud Sur, 57º 00? 39?? longitud Oeste y 124 m SNM). El diseño estadístico de los experimentos fue de parcelas al azar. Los resultados de las animales y pasturas fueron analizados por el procedimiento GLM (SAS Institute Inc. 9.1, 2002-2003) y las medias se contrastaron con el test LSD (P<0,05). Dadas las características de los experimentos, se consideró conveniente utilizar el error del tipo III en los análisis de varianza. Las variables que tuvieron mediciones seriadas en el tiempo se analizaron mediante el procedimiento PROC MIXED y las discretas por el procedimiento CATMOD del SAS (SAS Institute Inc. 9.1, 2002-2003). Cuando correspondió (peso vivo, condición corporal), fue incluida la covariable de estos parámetros.
650 $aCORDERO
650 $aGANADERIA EXTENSIVA
650 $aGESTACION
650 $aNUTRICION ANIMAL
650 $aOVEJA
650 $aOVINOS
700 1 $aMONTOSSI, F.
700 1 $aLUZARDO, S.
700 1 $aSILVEIRA, C.
700 1 $aMEDEROS, A.
700 1 $aPLATERO, P.
700 1 $aBOTTERO, D.
700 1 $aBENTANCURT, M.
700 1 $aROVIRA, F.
700 1 $aCUADRO, P.
700 1 $aSANCRISTOBAL, L.
700 1 $aMARTINEZ, H.
700 1 $aFRUGONI, J.
700 1 $aLEVRATTO, J.
773 $tIn: BERRETTA, E.; MONTOSSI, F.; BRITO, G. (Ed.). Alternativas tecnológicas para los sistemas ganaderos del basalto. Montevideo, UY: INIA, 2014.
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