Data/hora: 08/06/2024 16:33:21

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 08/03/2016
Data da última atualização: | 29/03/2016
Autoria: | CHAPELLE, E; MENDES, R.; BAKKER, P. A. H. M.; RAAIJMAKERS, J. M.
Afiliação: | EMILIE CHAPELLE, Wageningen University; RODRIGO MENDES, CNPMA; PETER A H M BAKKER, Utrecht University; JOS M RAAIJMAKERS, Wageningen University.
Título: | Fungal invasion of the rhizosphere microbiome.
Ano de publicação: | 2016
Fonte/Imprenta: | The ISME Journal, London, v. 10, n. 1, p. 265-268, 2016.
Idioma: | Inglês
Conteúdo: | The rhizosphere is the infection court where soil-borne pathogens establish a parasitic relationship with the plant. To infect root tissue, pathogens have to compete with members of the rhizosphere microbiome for available nutrients and microsites. In disease-suppressive soils, pathogens are strongly restricted in growth by the activities of specific rhizosphere microorganisms. Here, we sequenced metagenomic DNA and RNA of the rhizosphere microbiome of sugar beet seedlings grown in a soil suppressive to the fungal pathogen Rhizoctonia solani. rRNA-based analyses showed that Oxalobacteraceae, Burkholderiaceae, Sphingobacteriaceae and Sphingomonadaceae were significantly more abundant in the rhizosphere upon fungal invasion. Metatranscriptomics revealed that stress-related genes (ppGpp metabolism and oxidative stress) were upregulated in these bacterial families. We postulate that the invading pathogenic fungus induces, directly or via the plant, stress responses in the rhizobacterial community that lead to shifts in microbiome composition and to activation of antagonistic traits that restrict pathogen infection.
Palavras-Chave: | Solo supressivo; Ungal diseases of plants.
Thesagro: | Bactéria não patogênica; Beterraba; Fungo; Rhizoctonia solani; Rizosfera.
Thesaurus Nal: | Microbiome; Rhizosphere bacteria; Sugar beet.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (14995-1) - UPC - AP - DD -  -  -  - DIS