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| Registros recuperados : 19 | |
| 11. |  | AUGSBURGER, H.K.M.; METHOL, M. Henificación Montevideo (Uruguay): INIA, 1992. 79p. (INIA Boletín de divulgación; 27) "9 cuadros; 5 gráficas; 57 ilus., 29 ref."| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas. |
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| 15. | | Augsburger, H.K.M. Maquinaria para siembra directa ln: Reunión Técnica Viabilización de la Siembra Directa en Sistemas Mixtos de Producción, 1998 abr 22-24 : La Estanzuela, Colonia [Memorias]. La Estanzuela, Colonia (Uruguay): INIA ; Programa Cooperativo para el Desarrollo Tecnológico Agropecuario del Cono Sur, 1998. p20-21| Biblioteca(s): INIA La Estanzuela. |
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| 17. | | AUGSBURGER, H.K.M. Mecanización Agrícola. Lima (Peru): FAO, 1981. 233 p. Proyecto de asistencia tecnica e insumos agricolas TF/PER.22. - Bibliografía : p233 .| Biblioteca(s): INIA Tacuarembó; INIA Treinta y Tres. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
10/11/2023 |
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Actualizado : |
10/11/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
CIBILS-STEWART, X.; PUTRA, R.; ISLAM, T.; FANNA, D.J.; WUHRER, R.; MACE, W.J.; HARTLEY, S.E.; POPAY, A.J.; JOHNSON, S.N. |
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Afiliación : |
XIMENA CIBILS-STEWART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; R. PUTRA, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; Department of Chemical Ecology, Faculty of Biology, Bielefeld University, Bielefeld, Germany; T. ISLAM, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; Department of Entomology, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, Bangladesh; D.J. FANNA, Advanced Materials Characterisation Facility, Western Sydney University, Penrith, NSW, Australia; R. WUHRER, Advanced Materials Characterisation Facility, Western Sydney University, Penrith, NSW, Australia; M.J. MACE, AgResearch, Grasslands Research Centre, Palmerston North, New Zealand; S.E. HARTLEY, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom; A.J. POPAY, AgResearch, Ruakura Research Centre, Hamilton, New Zealand; S.N. JOHNSON, Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia. |
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Título : |
Silicon and Epichloë-endophyte defences in a model temperate grass diminish feeding efficiency and immunity of an insect folivore. |
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Fecha de publicación : |
2023 |
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Fuente / Imprenta : |
Functional Ecology, 2023, https://doi.org/10.1111/1365-2435.14453 --OPEN ACCESS. |
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ISSN : |
0269-8463 |
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DOI : |
10.1111/1365-2435.14453 |
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Idioma : |
Inglés |
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Notas : |
Article history: Manuscript received 08 April 2023; Manuscript accepted 21 September 2023; Version of Record online 25 October 2023. -- Correspondnce author: Cibils-Stewart, X.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; email:xcibils@inia.org.uy -- Handling Editor: Adam Frew. -- Research Funding: Australian Research Council Discovery. Grant Number: DP170102278 -- Article Funding:
Open access publishing facilitated by Western Sydney University, as part of the Wiley - Western Sydney University agreement via the Council of Australian University Librarians. -- LICENSE: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/ ) |
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Contenido : |
ABSTRACT.- Plants deploy diverse anti-herbivore defences which reduce feeding and performance of herbivores. Temperate grasses use silicon (Si) accumulation and Epichloë-endophytes for physical and chemical (i.e. endophytic-alkaloids) defence against insect herbivores. Recent studies suggest that Epichloë-endophytes increase Si accumulation in their host grass. It is unknown, however, how this affects Si-deposition on the leaf surface, their impacts on insect herbivore feeding efficiency and their immunity to potential infection/parasitism. To address this knowledge gap, we grew tall fescue (Festuca arundinacea) hydroponically with and without Si, in the absence or presence of the novel AR584 Epichloë-strain. We exposed plants to Helicoverpa armigera (Lepidoptera: Noctuidae) in both in situ (intact leaves) and ex situ (excised leaves) feeding trials and determined the effects of Si and endophyte defences on herbivore feeding efficiency, growth rates and immunity against potential infection/parasitism. Endophytic plants supplied with Si showed 110% and 143% increases in leaf silica density and leaf Si concentrations, respectively, when exposed to herbivory, compared to non-endophytic plants that were herbivore-free. Despite the endophyte-mediated increases in Si concentrations, H. armigera was only affected by Si supply; growth rates decreased by 87% and most feeding efficiency indices decreased by at least 30%. Si supply also increased mandibular wear by 16%, which was negatively correlated with H. armigera growth rates. Cellular and humoral immunity of H. armigera were negatively affected by both Si and endophytes. Endophytic-loline alkaloid concentrations were unaffected by Si supply or herbivory, whereas herbivory increased peramine concentrations by 290%. To our knowledge, this is the first report of Si defences and Epichloë-endophyte derived alkaloids compromising insect immunity via reduced melanisation response. Using tall fescue and H. armigera, our study suggests that deploying both physical (i.e. Si accumulation) and chemical (i.e. endophytic-alkaloids) defences acting against multiple insect herbivore traits, including feeding efficiency, growth and immunity, may be a successful defence strategy in temperate grasses. This multi-faceted defence may be particularly difficult for insect herbivores to overcome. Read the free Plain Language Summary for this article on the Journal blog. © 2023 The Authors. Functional Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society. MenosABSTRACT.- Plants deploy diverse anti-herbivore defences which reduce feeding and performance of herbivores. Temperate grasses use silicon (Si) accumulation and Epichloë-endophytes for physical and chemical (i.e. endophytic-alkaloids) defence against insect herbivores. Recent studies suggest that Epichloë-endophytes increase Si accumulation in their host grass. It is unknown, however, how this affects Si-deposition on the leaf surface, their impacts on insect herbivore feeding efficiency and their immunity to potential infection/parasitism. To address this knowledge gap, we grew tall fescue (Festuca arundinacea) hydroponically with and without Si, in the absence or presence of the novel AR584 Epichloë-strain. We exposed plants to Helicoverpa armigera (Lepidoptera: Noctuidae) in both in situ (intact leaves) and ex situ (excised leaves) feeding trials and determined the effects of Si and endophyte defences on herbivore feeding efficiency, growth rates and immunity against potential infection/parasitism. Endophytic plants supplied with Si showed 110% and 143% increases in leaf silica density and leaf Si concentrations, respectively, when exposed to herbivory, compared to non-endophytic plants that were herbivore-free. Despite the endophyte-mediated increases in Si concentrations, H. armigera was only affected by Si supply; growth rates decreased by 87% and most feeding efficiency indices decreased by at least 30%. Si supply also increased mandibular wear by 16%, which was negat... Presentar Todo |
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Palabras claves : |
Antiherbivore alkaloids; Endophytes; Festuca arundinacea; Helicoverpa armigera; Insect immunity; Physical defences. |
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Asunto categoría : |
H01 Protección de plantas - Aspectos generales |
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URL : |
https://besjournals.onlinelibrary.wiley.com/doi/pdfdirect/10.1111/1365-2435.14453
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Marc : |
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001 1064367
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022 $a0269-8463
024 7 $a10.1111/1365-2435.14453$2DOI
100 1 $aCIBILS-STEWART, X.
245 $aSilicon and Epichloë-endophyte defences in a model temperate grass diminish feeding efficiency and immunity of an insect folivore.$h[electronic resource]
260 $c2023
500 $aArticle history: Manuscript received 08 April 2023; Manuscript accepted 21 September 2023; Version of Record online 25 October 2023. -- Correspondnce author: Cibils-Stewart, X.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; email:xcibils@inia.org.uy -- Handling Editor: Adam Frew. -- Research Funding: Australian Research Council Discovery. Grant Number: DP170102278 -- Article Funding: Open access publishing facilitated by Western Sydney University, as part of the Wiley - Western Sydney University agreement via the Council of Australian University Librarians. -- LICENSE: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/ )
520 $aABSTRACT.- Plants deploy diverse anti-herbivore defences which reduce feeding and performance of herbivores. Temperate grasses use silicon (Si) accumulation and Epichloë-endophytes for physical and chemical (i.e. endophytic-alkaloids) defence against insect herbivores. Recent studies suggest that Epichloë-endophytes increase Si accumulation in their host grass. It is unknown, however, how this affects Si-deposition on the leaf surface, their impacts on insect herbivore feeding efficiency and their immunity to potential infection/parasitism. To address this knowledge gap, we grew tall fescue (Festuca arundinacea) hydroponically with and without Si, in the absence or presence of the novel AR584 Epichloë-strain. We exposed plants to Helicoverpa armigera (Lepidoptera: Noctuidae) in both in situ (intact leaves) and ex situ (excised leaves) feeding trials and determined the effects of Si and endophyte defences on herbivore feeding efficiency, growth rates and immunity against potential infection/parasitism. Endophytic plants supplied with Si showed 110% and 143% increases in leaf silica density and leaf Si concentrations, respectively, when exposed to herbivory, compared to non-endophytic plants that were herbivore-free. Despite the endophyte-mediated increases in Si concentrations, H. armigera was only affected by Si supply; growth rates decreased by 87% and most feeding efficiency indices decreased by at least 30%. Si supply also increased mandibular wear by 16%, which was negatively correlated with H. armigera growth rates. Cellular and humoral immunity of H. armigera were negatively affected by both Si and endophytes. Endophytic-loline alkaloid concentrations were unaffected by Si supply or herbivory, whereas herbivory increased peramine concentrations by 290%. To our knowledge, this is the first report of Si defences and Epichloë-endophyte derived alkaloids compromising insect immunity via reduced melanisation response. Using tall fescue and H. armigera, our study suggests that deploying both physical (i.e. Si accumulation) and chemical (i.e. endophytic-alkaloids) defences acting against multiple insect herbivore traits, including feeding efficiency, growth and immunity, may be a successful defence strategy in temperate grasses. This multi-faceted defence may be particularly difficult for insect herbivores to overcome. Read the free Plain Language Summary for this article on the Journal blog. © 2023 The Authors. Functional Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society.
653 $aAntiherbivore alkaloids
653 $aEndophytes
653 $aFestuca arundinacea
653 $aHelicoverpa armigera
653 $aInsect immunity
653 $aPhysical defences
700 1 $aPUTRA, R.
700 1 $aISLAM, T.
700 1 $aFANNA, D.J.
700 1 $aWUHRER, R.
700 1 $aMACE, W.J.
700 1 $aHARTLEY, S.E.
700 1 $aPOPAY, A.J.
700 1 $aJOHNSON, S.N.
773 $tFunctional Ecology, 2023, https://doi.org/10.1111/1365-2435.14453 --OPEN ACCESS.
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