Artículo
A fungal protease named AsES triggers antiviral immune responses and effectively restricts virus infection in arabidopsis and Nicotiana benthamiana plants
Caro, María del Pilar
; Venturuzzi, Andrea Laura
; Moschen, Sebastián Nicolás
; Salazar, Sergio Miguel; Diaz Ricci, Juan Carlos
; Asurmendi, Sebastian
Fecha de publicación:
04/2022
Editorial:
Oxford University Press
Revista:
Annals of Botany
ISSN:
0305-7364
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Background and Aims: Plants have evolved complex mechanisms to fight against pathogens. Among these mechanisms, pattern-triggered immunity (PTI) relies on the recognition of conserved microbe- or pathogen-associated molecular patterns (MAMPs or PAMPs, respectively) by membrane-bound receptors. Indeed, PTI restricts virus infection in plants and, in addition, BRI1-associated kinase 1 (BAK1), a central regulator of PTI, plays a role in antiviral resistance. However, the compounds that trigger antiviral defences, along with their molecular mechanisms of action, remain mostly elusive. Herein, we explore the role of a fungal extracellular subtilase named AsES in its capacity to trigger antiviral responses. Methods: In this study, we obtained AsES by recombinant expression, and evaluated and characterized its capacity to trigger antiviral responses against Tobacco mosaic virus (TMV) by performing time course experiments, analysing gene expression, virus movement and callose deposition. Key Results: The results of this study provide direct evidence that exogenous treatment with recombinant AsES increases a state of resistance against TMV infection, in both arabidopsis and Nicotiana benthamiana plants. Also, the antiviral PTI response exhibited by AsES in arabidopsis is mediated by the BAK1/SERK3 and BKK1/SERK4 co-receptors. Moreover, AsES requires a fully active salicylic acid (SA) signalling pathway to restrict the TMV movement by inducing callose deposition. Additionally, treatment with PSP1, a biostimulant based on AsES as the active compound, showed an increased resistance against TMV in N. benthamiana and tobacco plants. Conclusions: AsES is a fungal serine protease which triggers antiviral responses relying on a conserved mechanism by means of the SA signalling pathway and could be exploited as an effective and sustainable biotechnology strategy for viral disease management in plants.
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Articulos (IABIMO)
Articulos de INSTITUTO DE AGROBIOTECNOLOGIA Y BIOLOGIA MOLECULAR
Articulos de INSTITUTO DE AGROBIOTECNOLOGIA Y BIOLOGIA MOLECULAR
Articulos(INSIBIO)
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Citación
Caro, María del Pilar; Venturuzzi, Andrea Laura; Moschen, Sebastián Nicolás; Salazar, Sergio Miguel; Diaz Ricci, Juan Carlos; et al.; A fungal protease named AsES triggers antiviral immune responses and effectively restricts virus infection in arabidopsis and Nicotiana benthamiana plants; Oxford University Press; Annals of Botany; 129; 5; 4-2022; 593-606
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