Temporal shifts of fungal communities in the rhizosphere and on tubers in potato fields.
Fungal Biol
; 122(9): 928-934, 2018 09.
Article
en En
| MEDLINE
| ID: mdl-30115327
ABSTRACT
Soil fungal communities perform important ecological roles determining, at least in part, agricultural productivity. This study aimed at examining the fungal community dynamics in the potato rhizosphere across different development stages in two consecutive growing seasons (winter and summer). Microbial fingerprinting of rhizosphere soil samples collected at pre-planting, tuber initiation, flowering and at senescence was performed using ARISA in conjunction with Next Generation Sequencing (Illumina MiSeq). The epiphytic fungal communities on tubers at harvest were also investigated. Alpha-diversity was stable over time within and across the two seasons. In contrast, rhizospheric fungal community structure and composition were different between the two seasons and in the different plant growth stages within a given season, indicating the significance of the rhizosphere in shaping microbial communities. The phylum Ascomycota was dominant in the potato fungal rhizosphere, with Operational Taxonomic Units (OTUs) belonging to the genus Peyronellaea being the most abundant in all samples. Important fungal pathogens of potato, together with potential biological control agents and saprophytic species, were identified as indicator OTUs at different plant growth stages. These findings indicate that potato rhizosphere fungal communities are functionally diverse, which may contribute to soil health.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Solanum tuberosum
/
Rizosfera
/
Hongos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Fungal Biol
Asunto de la revista:
MICROBIOLOGIA
Año:
2018
Tipo del documento:
Article
País de afiliación:
Sudáfrica