Artículo
Plant responses underlying nonhost resistance of Citrus limon against Xanthomonas campestris pv. campestris
Chiesa, Maria Amalia
; Roeschlin, Roxana Andrea
; Favaro, María Alejandra
; Uviedo, Facundo
; Campos Beneyto, Laura; D'andrea, Rodrigo Matias
; Gadea, José; Marano, María Rosa
Fecha de publicación:
01/2019
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Molecular Plant Pathology
ISSN:
1464-6722
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Citrus is an economically important fruit crop that is severely afflicted by citrus canker, a disease caused by Xanthomonas citri ssp. citri (X. citri); thus, new sustainable strategies to manage this disease are needed. Although all Citrus spp. are susceptible to this pathogen, they are resistant to other Xanthomonas species, exhibiting non-host resistance (NHR), for example, to the brassica pathogen X. campestris pv. campestris (Xcc) and a gene-for-gene host defence response (HDR) to the canker-causing X. fuscans ssp. aurantifolii (Xfa) strain C. Here, we examine the plant factors associated with the NHR of C. limon to Xcc. We show that Xcc induced asymptomatic type I NHR, allowing the bacterium to survive in a stationary phase in the non-host tissue. In C. limon, this NHR shared some similarities with HDR; both defence responses interfered with biofilm formation, and were associated with callose deposition, induction of the salicylic acid (SA) signalling pathway and the repression of abscisic acid (ABA) signalling. However, greater stomatal closure was seen during NHR than during HDR, together with different patterns of accumulation of reactive oxygen species and phenolic compounds and the expression of secondary metabolites. Overall, these differences, independent of Xcc type III effector proteins, could contribute to the higher protection elicited against canker development. We propose that Xcc may have the potential to steadily activate inducible defence responses. An understanding of these plant responses (and their triggers) may allow the development of a sustained and sustainable resistance to citrus canker.
Palabras clave:
Nonhost
,
cancrosis
,
Xanthomonas
,
respuesta de defensa
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IBR)
Articulos de INST.DE BIOLOGIA MOLECULAR Y CELULAR DE ROSARIO
Articulos de INST.DE BIOLOGIA MOLECULAR Y CELULAR DE ROSARIO
Articulos(IICAR)
Articulos de INST. DE INVESTIGACIONES EN CIENCIAS AGRARIAS DE ROSARIO
Articulos de INST. DE INVESTIGACIONES EN CIENCIAS AGRARIAS DE ROSARIO
Citación
Chiesa, Maria Amalia; Roeschlin, Roxana Andrea; Favaro, María Alejandra; Uviedo, Facundo; Campos Beneyto, Laura; et al.; Plant responses underlying nonhost resistance of Citrus limon against Xanthomonas campestris pv. campestris; Wiley Blackwell Publishing, Inc; Molecular Plant Pathology; 20; 2; 1-2019; 254-269
Compartir
Altmétricas