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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
21/02/2014 |
Actualizado : |
03/08/2015 |
Tipo de producción científica : |
Documentos |
Autor : |
REAL, D.; FRANCO, J.; CROSSA, J.; IBAÑEZ, V. |
Afiliación : |
DANIEL REAL FERREIRO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JORGE FRANCO, Universidad de la República (UdelaR)/ Facultad de Agronomía; JOSE CROSSA, CIMMYT (Centro Internacional de Mejoramiento de Maíz y Trigo); VILFREDO ARIEL IBAÑEZ ALVEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Estudio de caso: metodología empleada por INIA para la evaluación de leguminosas forrajeras para mejoramientos de campo en la región basáltica del Uruguay. |
Fecha de publicación : |
2001 |
Fuente / Imprenta : |
ln: CERETTA, S.; ALTIER, N.; ABADIE, T., (Coord). Interacción genotipo x ambiente: avances y aplicaciones para el desarrollo de la genética vegetal. Coloquio. Las Brujas, Canelones (Uruguay): INIA, 2001. |
Páginas : |
p. 12-13 |
Idioma : |
Español |
Thesagro : |
LEGUMINOSAS FORRAJERAS; METODOS ESTADÍSTICOS. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/4900/1/Coloquio.-Genotipo-x-Ambiente.-2001..pdf
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Marc : |
LEADER 00750naa a2200181 a 4500 001 1010753 005 2015-08-03 008 2001 bl uuuu u00u1 u #d 100 1 $aREAL, D. 245 $aEstudio de caso$bmetodología empleada por INIA para la evaluación de leguminosas forrajeras para mejoramientos de campo en la región basáltica del Uruguay. 260 $c2001 300 $ap. 12-13 650 $aLEGUMINOSAS FORRAJERAS 650 $aMETODOS ESTADÍSTICOS 700 1 $aFRANCO, J. 700 1 $aCROSSA, J. 700 1 $aIBAÑEZ, V. 773 $tln: CERETTA, S.; ALTIER, N.; ABADIE, T., (Coord). Interacción genotipo x ambiente: avances y aplicaciones para el desarrollo de la genética vegetal. Coloquio. Las Brujas, Canelones (Uruguay): INIA, 2001.
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha actual : |
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
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