PLANT MICROBIOME. Salicylic acid modulates colonization of the root microbiome by specific bacterial taxa.
Science
; 349(6250): 860-4, 2015 Aug 21.
Article
em En
| MEDLINE
| ID: mdl-26184915
ABSTRACT
Immune systems distinguish "self" from "nonself" to maintain homeostasis and must differentially gate access to allow colonization by potentially beneficial, nonpathogenic microbes. Plant roots grow within extremely diverse soil microbial communities but assemble a taxonomically limited root-associated microbiome. We grew isogenic Arabidopsis thaliana mutants with altered immune systems in a wild soil and also in recolonization experiments with a synthetic bacterial community. We established that biosynthesis of, and signaling dependent on, the foliar defense phytohormone salicylic acid is required to assemble a normal root microbiome. Salicylic acid modulates colonization of the root by specific bacterial families. Thus, plant immune signaling drives selection from the available microbial communities to sculpt the root microbiome.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Reguladores de Crescimento de Plantas
/
Microbiologia do Solo
/
Raízes de Plantas
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Ácido Salicílico
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Microbiota
Tipo de estudo:
Incidence_studies
Idioma:
En
Revista:
Science
Ano de publicação:
2015
Tipo de documento:
Article