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| Registros recuperados : 13 | |
| 1. |  | PUTRA, R.; ISLAM, T.; CIBILS-STEWART, X.; HARTLEY, S.E.; JOHNSON, S.N. Agroecological consequences of silicon supplementation for a legume cultivation: Two-year-long field observations. Agriculture, Ecosystems and Environment. 2024, Volume 365, Article 108893. https://doi.org/10.1016/j.agee.2024.108893 -- OPEN ACCESS. Article history: Received 25 October 2023; Revised 28 December 2023; Accepted 12 January 2024; Available online 7 February 2024; Version of Record 7 February 2024. -- Correspondence: Putra, R.; Department of Chemical Ecology, Faculty of...| Biblioteca(s): INIA Las Brujas. |
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| 2. | | BIRU, F.N; ISLAM, T.; CIBILS-STEWART, X.; CAZZONELLI, CH.I.; ELBAUM, R.; JOHNSON, S.N. Anti-herbivore silicon defences in a model grass are greatest under Miocene levels of atmospheric CO2. Global Change Biology, Volume 27, Issue 12, Pages 2959-2969, June 2021. Doi: https://doi.org/10.1111/gcb.15619 Article history: Received: 8 February 2021/Accepted: 12 March 2021./ First published: 27 March 2021: Email: f.biru@westernsydney.edu.au.| Biblioteca(s): INIA La Estanzuela. |
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| 4. | | JOHNSON, S.N.; POWELL, J.R.; FREW, A.; CIBILS-STEWART, X. Silicon accumulation suppresses arbuscular mycorrhizal fungal colonisation in the model grass Brachypodium distachyon. Plant and Soil, August 2022, Volume 477, Issue 1-2, pages 219-232. OPEN ACCESS. doi: https://doi.org/10.1007/s11104-022-05463-9 Article history: Received 22 December 2021; Accepted 26 April 2022; Published online 17 May 2022. -- Corresponding author: Johnson, S.N.; Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW,...| Biblioteca(s): INIA Las Brujas. |
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| 5. | | JOHNSON, S.N; CIBILS-STEWART, X.; WATERMAN, J.M.; BIRU, F.N.; ROWE, R.C.; HARTLEY, S.E. Elevated atmospheric CO 2 changes defence allocation in wheat but herbivore resistance persists. Proceedings of the Royal Society B: Biological Sciences, 2022, Volume 289, Issue 1969, Article number 20212536. doi: https://doi.org/10.6084/m9.figshare.c.5833004 Article history: Received: 23 November 2021/Accepted: 14 January 2022. Electronic supplementary material is available online at https://doi.org/10.6084/m9.figshare.c.5833004.| Biblioteca(s): INIA La Estanzuela. |
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| 6. | | VANDEGEER, R.K.; CIBILS-STEWART, X.; WUHRER, R.; HARTLEY, S.E.; TISSUE, D.T.; JOHNSON, S.N. Leaf silicification provides herbivore defence regardless of the extensive impacts of water stress. Functional Ecology, 2021. Volume 35, Issue 6, Pages 1200-1211, June 2021. Doi: https://doi.org/10.1111/1365-2435.13794 Article history: Received: 5 October 2020/Accepted: 11 March 2021/ First published: 24 March 2021.
Correspondence: Email: R.Vandegeer@westernsydney.edu.au.| Biblioteca(s): INIA La Estanzuela. |
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| 9. | | JOHNSON, S.N; BARTON, C.V.M.; BIRU, F.N.; ISLAM , T.; MACE, W.J.; ROWE, R.C.; CIBILS-STEWART, X. Elevated atmospheric CO2 suppresses silicon accumulation and exacerbates endophyte reductions in plant phosphorus. [Dataset]. DRYAD Dataset, 2023. https://doi.org/10.5061/dryad.6m905qg4p Article history: Publication date 12 April 12 2023. -- Correspondence author: Johnson, S.N.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia; email:scott.johnson@westernsydney.edu.au --...| Biblioteca(s): INIA Las Brujas. |
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| 10. | | JOHNSON, S.N.; BARTON, C.V.M.; BIRU, F.N.; ISLAM , T.; MACE, W.J.; ROWE, R.C.; CIBILS-STEWART, X. Elevated atmospheric CO2 suppresses silicon accumulation and exacerbates endophyte reductions in plant phosphorus. Functional Ecology, 2023. https://doi.org/10.1111/1365-2435.14342 -- [Article in Press] Article history: Accepted 28 March 2023, Received 15 January 2023, First published 27 April 2023. -- Correspondence author:Johnson, S.N.; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia;...| Biblioteca(s): INIA Las Brujas. |
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| 12. | | VANDEGEER, R.K.; ZHAO, C.; CIBILS-STEWART, X.; WUHRER, R.; HALL, C.R.; HARTLEY, S.E.; TISSUE, D.T.; JOHNSON, S.N. Silicon deposition on guard cells increases stomatal sensitivity as mediated by K+ efflux and consequently reduces stomatal conductance. Physiologia Plantarum, Volume 171, Issue 3, Pages 358-370, March 2021. Doi: https://doi.org/10.1111/ppl.13202 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...| Biblioteca(s): INIA La Estanzuela. |
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| 13. | | CIBILS-STEWART, X.; PUTRA, R.; ISLAM, T.; FANNA, D.J.; WUHRER, R.; MACE, W.J.; HARTLEY, S.E.; POPAY, A.J.; JOHNSON, S.N. Silicon and Epichloë-endophyte defences in a model temperate grass diminish feeding efficiency and immunity of an insect folivore. Functional Ecology, 2023, https://doi.org/10.1111/1365-2435.14453 --OPEN ACCESS. 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...| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 13 | |
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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 actual : |
19/11/2021 |
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Actualizado : |
19/11/2021 |
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Autor : |
CIBILS-STEWART, X.; MACE, W.J.; POPAY, A.J.; LATTANZI, F.; HARTLEY, S.E; HALL, C.R.; POWELL, J.R.; 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; 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. |
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Título : |
Interactions between silicon and alkaloid defences in endophyte-infected grasses and the consequences for a folivore. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Functional Ecology, 2021. Doi: https://doi.org/10.1111/1365-2435.13916 |
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DOI : |
10.1111/1365-2435.13916 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 6 April 2021/Accepted: 30 August 2021. |
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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 |
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Palabras claves : |
Antiherbivore defences; Epichloë-endophytes; Helicoverpa armigera; Perennial ryegrass (Lolium perenne L.); Tall fescue (Festuca arundinacea). |
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Thesagro : |
ENTOMOLOGIA. |
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Asunto categoría : |
-- |
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Marc : |
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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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