| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela. |
|
Fecha : |
19/11/2021 |
|
Actualizado : |
19/11/2021 |
|
Autor : |
CIBILS-STEWART, X.; MACE, W.J.; POPAY, A.J.; LATTANZI, F.; HARTLEY, S.E; HALL, C.R.; POWELL, J.R.; JOHNSON, S.N. |
|
Afiliación : |
XIMENA CIBILS-STEWART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; WADE J. MACE, AgResearch, Grasslands Research Centre, Palmerston North, New Zealand; ALISON J. POPAY, AgResearch, Ruakura Research Centre, Hamilton, New Zealand.; FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SUSAN (SUE) E. HARTLEY, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK.; CASEY R. HALL, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia.; JEFF R. POWELL, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia.; SCOTT N. JOHNSON, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia. |
|
Título : |
Interactions between silicon and alkaloid defences in endophyte-infected grasses and the consequences for a folivore. |
|
Fecha de publicación : |
2021 |
|
Fuente / Imprenta : |
Functional Ecology, 2021. Doi: https://doi.org/10.1111/1365-2435.13916 |
|
DOI : |
10.1111/1365-2435.13916 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received: 6 April 2021/Accepted: 30 August 2021. |
|
Contenido : |
Abstract:
Grasses have developed a wide range of morphological and physiological mechanisms to resist herbivory. For instance, they accumulate silicon (Si) in tissue, as physical defence, and associate symbiotically with foliar Epichloë-endophytes that provide chemical defence via antiherbivore alkaloids. Recent evidence showed that some Epichloë-endophytes increase foliar Si in forage grasses; however, whether this impacts insect herbivores is unknown. Furthermore, while Si is primarily a physical defence, it also affects production of plant defensive secondary metabolites; Si supply might therefore affect Epichloë-alkaloids, although this remains untested.
We grew endophyte-free (Nil) and Epichloë-infected tall fescue and perennial ryegrass in a factorial combination with or without Si supplementation, in the absence or presence of Helicoverpa armigera. Epichloë-endophyte strains were AR584 for tall fescue, and AR37, AR1 or Wild-type (WT) for perennial ryegrass. We assessed how Si supply and Epichloë-endophytes in interaction with herbivory affected foliar Si and mutualist-derived alkaloid concentrations. Subsequently, their effects on H. armigera relative growth rates (RGRs) were evaluated.
Endophytes generally increased Si concentrations in Si-supplied plants. In tall fescue AR584 and perennial ryegrass AR37, endophytes increased constitutive (herbivore-free) and induced (herbivore-inoculated) Si concentrations by at least 25%; in contrast, in perennial ryegrass, the AR1 endophyte only increased constitutive levels. Si supply did not affect alkaloids produced by AR584 or AR1/WT endophytes; however, in the presence of herbivory, Si supply decreased the induction of alkaloids produced by AR37 endophytes by 33%. For tall fescue, Si supply reduced H. armigera RGR by at least 76%, regardless of endophytic status, whereas, endophyte-alkaloids played a secondary role only reducing herbivore growth in the absence of Si supply. Conversely, in perennial ryegrass, both Si and endophyte-alkaloids (regardless of Si supply) reduced herbivore RGR although not synergised.
Novel interactions between constitutive and induced Si- and alkaloid-based antiherbivore defences in grasses were observed. Overall, Si had a greater effect on the folivore than endophytes in both grasses. Endophyte defences contributed more to herbivore resistance in perennial ryegrass than tall fescue. We demonstrate that Si and endophytes were not antagonistic and highlight that the protective nature of their interaction varies with the grass-endophyte species tested. MenosAbstract:
Grasses have developed a wide range of morphological and physiological mechanisms to resist herbivory. For instance, they accumulate silicon (Si) in tissue, as physical defence, and associate symbiotically with foliar Epichloë-endophytes that provide chemical defence via antiherbivore alkaloids. Recent evidence showed that some Epichloë-endophytes increase foliar Si in forage grasses; however, whether this impacts insect herbivores is unknown. Furthermore, while Si is primarily a physical defence, it also affects production of plant defensive secondary metabolites; Si supply might therefore affect Epichloë-alkaloids, although this remains untested.
We grew endophyte-free (Nil) and Epichloë-infected tall fescue and perennial ryegrass in a factorial combination with or without Si supplementation, in the absence or presence of Helicoverpa armigera. Epichloë-endophyte strains were AR584 for tall fescue, and AR37, AR1 or Wild-type (WT) for perennial ryegrass. We assessed how Si supply and Epichloë-endophytes in interaction with herbivory affected foliar Si and mutualist-derived alkaloid concentrations. Subsequently, their effects on H. armigera relative growth rates (RGRs) were evaluated.
Endophytes generally increased Si concentrations in Si-supplied plants. In tall fescue AR584 and perennial ryegrass AR37, endophytes increased constitutive (herbivore-free) and induced (herbivore-inoculated) Si concentrations by at least 25%; in contrast, in perennial ryegrass, the AR1... Presentar Todo |
|
Palabras claves : |
Antiherbivore defences; Epichloë-endophytes; Helicoverpa armigera; Perennial ryegrass (Lolium perenne L.); Tall fescue (Festuca arundinacea). |
|
Thesagro : |
ENTOMOLOGIA. |
|
Asunto categoría : |
-- |
|
Marc : |
LEADER 03589naa a2200301 a 4500
001 1062530
005 2021-11-19
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1111/1365-2435.13916$2DOI
100 1 $aCIBILS-STEWART, X.
245 $aInteractions between silicon and alkaloid defences in endophyte-infected grasses and the consequences for a folivore.$h[electronic resource]
260 $c2021
500 $aArticle history: Received: 6 April 2021/Accepted: 30 August 2021.
520 $aAbstract: Grasses have developed a wide range of morphological and physiological mechanisms to resist herbivory. For instance, they accumulate silicon (Si) in tissue, as physical defence, and associate symbiotically with foliar Epichloë-endophytes that provide chemical defence via antiherbivore alkaloids. Recent evidence showed that some Epichloë-endophytes increase foliar Si in forage grasses; however, whether this impacts insect herbivores is unknown. Furthermore, while Si is primarily a physical defence, it also affects production of plant defensive secondary metabolites; Si supply might therefore affect Epichloë-alkaloids, although this remains untested. We grew endophyte-free (Nil) and Epichloë-infected tall fescue and perennial ryegrass in a factorial combination with or without Si supplementation, in the absence or presence of Helicoverpa armigera. Epichloë-endophyte strains were AR584 for tall fescue, and AR37, AR1 or Wild-type (WT) for perennial ryegrass. We assessed how Si supply and Epichloë-endophytes in interaction with herbivory affected foliar Si and mutualist-derived alkaloid concentrations. Subsequently, their effects on H. armigera relative growth rates (RGRs) were evaluated. Endophytes generally increased Si concentrations in Si-supplied plants. In tall fescue AR584 and perennial ryegrass AR37, endophytes increased constitutive (herbivore-free) and induced (herbivore-inoculated) Si concentrations by at least 25%; in contrast, in perennial ryegrass, the AR1 endophyte only increased constitutive levels. Si supply did not affect alkaloids produced by AR584 or AR1/WT endophytes; however, in the presence of herbivory, Si supply decreased the induction of alkaloids produced by AR37 endophytes by 33%. For tall fescue, Si supply reduced H. armigera RGR by at least 76%, regardless of endophytic status, whereas, endophyte-alkaloids played a secondary role only reducing herbivore growth in the absence of Si supply. Conversely, in perennial ryegrass, both Si and endophyte-alkaloids (regardless of Si supply) reduced herbivore RGR although not synergised. Novel interactions between constitutive and induced Si- and alkaloid-based antiherbivore defences in grasses were observed. Overall, Si had a greater effect on the folivore than endophytes in both grasses. Endophyte defences contributed more to herbivore resistance in perennial ryegrass than tall fescue. We demonstrate that Si and endophytes were not antagonistic and highlight that the protective nature of their interaction varies with the grass-endophyte species tested.
650 $aENTOMOLOGIA
653 $aAntiherbivore defences
653 $aEpichloë-endophytes
653 $aHelicoverpa armigera
653 $aPerennial ryegrass (Lolium perenne L.)
653 $aTall fescue (Festuca arundinacea)
700 1 $aMACE, W.J.
700 1 $aPOPAY, A.J.
700 1 $aLATTANZI, F.
700 1 $aHARTLEY, S.E
700 1 $aHALL, C.R.
700 1 $aPOWELL, J.R.
700 1 $aJOHNSON, S.N.
773 $tFunctional Ecology, 2021. Doi: https://doi.org/10.1111/1365-2435.13916
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
|
Registro completo
|
|
Biblioteca (s) : |
INIA Las Brujas. |
|
Fecha actual : |
07/04/2016 |
|
Actualizado : |
16/11/2020 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
Internacional - -- |
|
Autor : |
TISCORNIA, G.; CAL, A.; GIMÉNEZ, A. |
|
Afiliación : |
GUADALUPE TISCORNIA TOSAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ADRIAN TABARE CAL ALVAREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; AGUSTIN EDUARDO GIMÉNEZ FUREST, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
|
Título : |
Análisis y caracterización de la variabilidad climática en algunas regiones de Uruguay. (Analysis and characterization of climate variability in some regions of Uruguay). |
|
Fecha de publicación : |
2016 |
|
Fuente / Imprenta : |
RIA Revista de Investigaciones Agropecuarias, 2016, v.42, no.1, p. 66-71. |
|
Descripción física : |
2-s2.0-84987608668 |
|
ISSN : |
0325-8718 |
|
Idioma : |
Español |
|
Notas : |
Recibido 26 de septiembre de 2015 // Aceptado 28 de diciembre de 2015 // Publicado online 06 de abril de 2016 |
|
Contenido : |
RESUMEN
La variabilidad climática y la ocurrencia de eventos extremos (heladas, granizos, sequías, inundaciones) resultan en perjuicios importantes para la producción agropecuaria requiriendo de varios años para la recuperación económica y financiera del deterioro ocasionado. Un ejemplo de esto es la precipitación registrada a nivel nacional en diciembre de 2013 con anomalías negativas de 100 mm a 200 mm en contraste con las ocurridas al mes siguiente, enero de 2014, cuando se registraron anomalías positivas de 300 mm a
400 mm. Considerando esto, el análisis y caracterización de la variabilidad climática en Uruguay, como uno de los factores más relevantes para la producción agropecuaria, resulta de fundamental importancia para la gestión de riesgos asociados al clima. El presente trabajo tuvo como objetivo cuantificar los componentes de tendencia de largo plazo, decadal e interanual, de las variables climáticas consideradas relevantes para las actividades agropecuarias, en diferentes períodos del año y en determinadas zonas de Uruguay, siguiendo la metodología propuesta por Green et al. (2011) en la que se descompone la variabilidad climática en esas tres dimensiones. Según los resultados obtenidos se puede concluir que para todas las variables estudiadas y en todas las localidades y períodos analizados, la variabilidad interanual es la de mayor incidencia.
ABSTRACT
Climate variability and extreme events associated with its (frost, hail, droughts, floods) result in serious damage to agricultural production, requiring several years for economic and financial recovery. An example of this, was the rainfall recorded during December 2013 with negative anomalies of 100mm to 200mm in contrast to January 2014 when positive anomalies were from 300mm to 400mm. Thus, climate variability in Uruguay is a very relevant factor and it analysis and characterization is critical to climate risk management. This study aimed to quantify the components of long-term trend, decadal and inter-annual variability of climate variables considered relevant in farming systems, in different periods of the year and in certain areas of Uruguay, following the methodology proposed by Green et al. (2011) in which the climate variability is decomposed into those three dimensions. As the main conclusion and according to the results, for every analyzed variable and in every location and period, the inter-annual variability is the most important one. MenosRESUMEN
La variabilidad climática y la ocurrencia de eventos extremos (heladas, granizos, sequías, inundaciones) resultan en perjuicios importantes para la producción agropecuaria requiriendo de varios años para la recuperación económica y financiera del deterioro ocasionado. Un ejemplo de esto es la precipitación registrada a nivel nacional en diciembre de 2013 con anomalías negativas de 100 mm a 200 mm en contraste con las ocurridas al mes siguiente, enero de 2014, cuando se registraron anomalías positivas de 300 mm a
400 mm. Considerando esto, el análisis y caracterización de la variabilidad climática en Uruguay, como uno de los factores más relevantes para la producción agropecuaria, resulta de fundamental importancia para la gestión de riesgos asociados al clima. El presente trabajo tuvo como objetivo cuantificar los componentes de tendencia de largo plazo, decadal e interanual, de las variables climáticas consideradas relevantes para las actividades agropecuarias, en diferentes períodos del año y en determinadas zonas de Uruguay, siguiendo la metodología propuesta por Green et al. (2011) en la que se descompone la variabilidad climática en esas tres dimensiones. Según los resultados obtenidos se puede concluir que para todas las variables estudiadas y en todas las localidades y períodos analizados, la variabilidad interanual es la de mayor incidencia.
ABSTRACT
Climate variability and extreme events associated with its (frost, hail, droughts, floods) result in seriou... Presentar Todo |
|
Palabras claves : |
CLIMATE CHANGE; CLIMATIC TREND; DECADAL VARIABILITY; INTER-ANNUAL VARIABILITY; TENDENCIA CLIMÁTICA DE LARGO PLAZO; VARIABILIDAD CLIMÁTICA DECADAL; VARIABILIDAD CLIMÁTICA INTERANUAL. |
|
Thesagro : |
CAMBIO CLIMÁTICO; URUGUAY. |
|
Asunto categoría : |
P40 Meteorología y climatología |
|
URL : |
http://ria.inta.gob.ar/trabajos/analisis-y-caracterizacion-de-la-variabilidad-climatica-en-algunas-regiones-de-uruguay
http://www.ainfo.inia.uy/digital/bitstream/item/5852/1/Tiscornia-G.-2015.-RIA.pdf
|
|
Marc : |
LEADER 03559naa a2200289 a 4500
001 1054621
005 2020-11-16
008 2016 bl uuuu u00u1 u #d
022 $a0325-8718
100 1 $aTISCORNIA, G.
245 $aAnálisis y caracterización de la variabilidad climática en algunas regiones de Uruguay. (Analysis and characterization of climate variability in some regions of Uruguay).$h[electronic resource]
260 $c2016
300 $c2-s2.0-84987608668
500 $aRecibido 26 de septiembre de 2015 // Aceptado 28 de diciembre de 2015 // Publicado online 06 de abril de 2016
520 $aRESUMEN La variabilidad climática y la ocurrencia de eventos extremos (heladas, granizos, sequías, inundaciones) resultan en perjuicios importantes para la producción agropecuaria requiriendo de varios años para la recuperación económica y financiera del deterioro ocasionado. Un ejemplo de esto es la precipitación registrada a nivel nacional en diciembre de 2013 con anomalías negativas de 100 mm a 200 mm en contraste con las ocurridas al mes siguiente, enero de 2014, cuando se registraron anomalías positivas de 300 mm a 400 mm. Considerando esto, el análisis y caracterización de la variabilidad climática en Uruguay, como uno de los factores más relevantes para la producción agropecuaria, resulta de fundamental importancia para la gestión de riesgos asociados al clima. El presente trabajo tuvo como objetivo cuantificar los componentes de tendencia de largo plazo, decadal e interanual, de las variables climáticas consideradas relevantes para las actividades agropecuarias, en diferentes períodos del año y en determinadas zonas de Uruguay, siguiendo la metodología propuesta por Green et al. (2011) en la que se descompone la variabilidad climática en esas tres dimensiones. Según los resultados obtenidos se puede concluir que para todas las variables estudiadas y en todas las localidades y períodos analizados, la variabilidad interanual es la de mayor incidencia. ABSTRACT Climate variability and extreme events associated with its (frost, hail, droughts, floods) result in serious damage to agricultural production, requiring several years for economic and financial recovery. An example of this, was the rainfall recorded during December 2013 with negative anomalies of 100mm to 200mm in contrast to January 2014 when positive anomalies were from 300mm to 400mm. Thus, climate variability in Uruguay is a very relevant factor and it analysis and characterization is critical to climate risk management. This study aimed to quantify the components of long-term trend, decadal and inter-annual variability of climate variables considered relevant in farming systems, in different periods of the year and in certain areas of Uruguay, following the methodology proposed by Green et al. (2011) in which the climate variability is decomposed into those three dimensions. As the main conclusion and according to the results, for every analyzed variable and in every location and period, the inter-annual variability is the most important one.
650 $aCAMBIO CLIMÁTICO
650 $aURUGUAY
653 $aCLIMATE CHANGE
653 $aCLIMATIC TREND
653 $aDECADAL VARIABILITY
653 $aINTER-ANNUAL VARIABILITY
653 $aTENDENCIA CLIMÁTICA DE LARGO PLAZO
653 $aVARIABILIDAD CLIMÁTICA DECADAL
653 $aVARIABILIDAD CLIMÁTICA INTERANUAL
700 1 $aCAL, A.
700 1 $aGIMÉNEZ, A.
773 $tRIA Revista de Investigaciones Agropecuarias, 2016$gv.42, no.1, p. 66-71.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
