Phosphate-induced resistance to pathogen infection in Arabidopsis
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INVESTIGACIONMetadatos
Título
Phosphate-induced resistance to pathogen infection in ArabidopsisAutoría
Fecha de publicación
2022-01-21Editor
WileyISSN
0960-7412; 1365-313XCita bibliográfica
Val-Torregrosa, B., Bundó, M., Martín-Cardoso, H., Bach-Pages, M., Chiou, T.-J., Flors, V. and Segundo, B.S. (2022), Phosphate-induced resistance to pathogen infection in Arabidopsis. Plant Journal, 110: 452-469.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In nature, plants are concurrently exposed to a number of abiotic and biotic stresses. Our understanding of convergence points between responses to combined biotic/abiotic stress pathways remains, however, rudimentary. ... [+]
In nature, plants are concurrently exposed to a number of abiotic and biotic stresses. Our understanding of convergence points between responses to combined biotic/abiotic stress pathways remains, however, rudimentary. Here we show that MIR399 overexpression, loss-of-function of PHOSPHATE2 (PHO2), or treatment with high phosphate (Pi) levels is accompanied by an increase in Pi content and accumulation of reactive oxygen species (ROS) in Arabidopsis thaliana. High Pi plants (e.g., miR399 overexpressors, pho2 mutants, and plants grown under high Pi supply) exhibited resistance to infection by necrotrophic and hemibiotrophic fungal pathogens. In the absence of pathogen infection, the expression levels of genes in the salicylic acid (SA)- and jasmonic acid (JA)-dependent signaling pathways were higher in high Pi plants compared to wild-type plants grown under control conditions, which is consistent with increased levels of SA and JA in non-infected high Pi plants. During infection, an opposite regulation in the two branches of the JA pathway (ERF1/PDF1.2 and MYC2/VSP2) occurs in high Pi plants. Thus, while pathogen infection induces PDF1.2 expression in miR399 OE and pho2 plants, VSP2 expression is downregulated by pathogen infection in these plants. This study supports the notion that Pi accumulation promotes resistance to infection by fungal pathogens in Arabidopsis, while providing a basis to better understand interactions between Pi signaling and hormonal signaling pathways for modulation of plant immune responses. [-]
Publicado en
The Plant Journal, 110 (2022)Entidad financiadora
CSIC. Unidad de Recursos de Información Científica para la Investigación | Ministerio de Ciencia, Innovación y Universidades / FEDER/ AEI | Universitat Jaume I | Generalitat de Catalunya | Ministerio de Economía, Industria y Competitividad / AEI
Código del proyecto o subvención
RTI2018-101275-B-I00 | UJI-B2019-2 | SEV-2015-0533 | CEX2019-000902-S | BES-2016-076289
Título del proyecto o subvención
Severo Ochoa Programme for Centres of Excellence in R&D | CERCA Programme
Derechos de acceso
info:eu-repo/semantics/openAccess
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