Unveiling the structural properties and induced resistance activity in rice of Chitin/Chitosan-Glucan Complex of Rhizoctonia solani AG1 IA inner cell wall.
Carbohydr Polym
; 337: 122149, 2024 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-38710571
ABSTRACT
Phytopathogen cell wall polysaccharides have important physiological functions. In this study, we isolated and characterized the alkali-insoluble residue on the inner layers of the Rhizoctonia solani AG1 IA cell wall (RsCW-AIR). Through chemical composition and structural analysis, RsCW-AIR was mainly identified as a complex of chitin/chitosan and glucan (ChCsGC), with glucose and glucosamine were present in a molar ratio of 2.71.0. The predominant glycosidic bond linkage of glucan in ChCsGC was ß-1,3-linked Glcp, both the α and ß-polymorphic forms of chitin were presented in it by IR, XRD, and solid-state NMR, and the ChCsGC exhibited a degree of deacetylation measuring 67.08 %. RsCW-AIR pretreatment effectively reduced the incidence of rice sheath blight, and its induced resistance activity in rice was evaluated, such as inducing a reactive oxygen species (ROS) burst, leading to the accumulation of salicylic acid (SA) and the up-regulation of SA-related gene expression. The recognition of RsCW-AIR in rice is partially dependent on CERK1.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de las Plantas
/
Rhizoctonia
/
Oryza
/
Pared Celular
/
Quitina
/
Quitosano
/
Glucanos
Idioma:
En
Revista:
Carbohydr Polym
Año:
2024
Tipo del documento:
Article