Fecha/hora: 16/06/2024 10:51:17

Biblioteca(s): 	INIA La Estanzuela.	
Fecha corriente: 	09/08/2021	
Fecha de la última actualización: 	06/09/2022	
Autoria: 	WATERMAN, J.M.; CIBILS-STEWART, X.; CAZZONELLI, C.I.; HARTLEY, S.E.; JOHNSON, S.N.	
Afiliación: 	JAMIE M. WATERMAN, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, New South Wales 2751 Australia.; XIMENA CIBILS-STEWART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./ Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, New South Wales 2751 Australia.; CHRISTOPHER I. CAZZONELLI, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, New South Wales 2751 Australia.; SUSAN E. HARTLEY, Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield S10 2TN UK.; SCOTT N. JOHNSON, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, New South Wales 2751 Australia.	
Título: 	Short-term exposure to silicon rapidly enhances plant resistance to herbivory.	
Año de publicación: 	2021	
Fuente/Imprenta: 	Ecology, 2021. Open Access. Doi: https://doi.org/10.1002/ecy.3438.	
DOI: 	10.1002/ecy.3438.	
Idioma: 	Inglés	
Notas: 	Article history: Manuscript received 25 February 2021; Revised 29 April 2021; Accepted 25 May 2021.	
Contenido: 	Abstract: Silicon (Si) can adversely affect insect herbivores, particularly in plants that evolved the ability to accumulate large quantities of Si. Very rapid herbivore-induced accumulation of Si has recently been demonstrated, but the level of protection against herbivory this affords plants remains unknown. Brachypodium distachyon, a model Si hyperaccumulating grass, was exposed to the chewing herbivore, Helicoverpa armigera, and grown under three
conditions: supplied Si over 34 d (+Si), not supplied Si (-Si), or supplied Si once herbivory began (-Si +Si). We evaluated the effectiveness of each Si treatment at reducing herbivore performance and measured Si-based defenses and phenolics (another form of defense often reduced by Si). Although Si concentrations remained lower, within 72 h of exposure to Si, -Si +Si plants were as resistant to herbivory as +Si plants. Both +Si and -Si ? +Si treatments reduced herbivore damage and growth, and increased mandible wear compared to Si. After 6 h, herbivory increased filled Si cell density in -Si ? +Si plants, and within 24 h, -Si ? +Si plants reached similar filled Si cell densities to +Si plants, although decreased phenolics only occurred in +Si plants. We demonstrate that plants with short-term Si exposure can rapidly accumulate Si-based antiherbivore defenses as effectively as plants with long-term exposure.	
Palabras-Clave: 	Helicoverpa armigera; Herbivory; Plant defense; Silica cells; Silicon.	
Thesagro: 	ENTOMOLOGIA.	
Categoría del tema: 	H10 Plagas de las plantas	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/16719/1/Ecology-2021-Waterman-Short8208term-exposure-to-silicon-rapidly-enhances-plant-resistance-to-herbivory.pdf
https://esajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.3438	
Registro original: 	INIA La Estanzuela (LE)	
Ejemplares: 	LE - (103427-1) - PXI - AP - DD - PP/Ecology/2021 -  -  - DIS