Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3390/agronomy11081567
Lizenz creative commons licence
Titel (primär) Compost fungi allow for effective dispersal of putative PGP bacteria
Autor González-González, S.; Astorga-Eló, M.; Campos, M.; Wick, L.Y.; Acuña, J.J.; Jorquera, M.A.
Quelle Agronomy
Erscheinungsjahr 2021
Department UMB
Band/Volume 11
Heft 8
Seite von art. 1567
Sprache englisch
Topic T7 Bioeconomy
Keywords bacteria-fungi interactions; compost; bacterial dispersion; plant growth-promoting bacteria; rhizosphere soil
Abstract Use of compost is a common agricultural practice. It improves soil fertility by adding nutrients and plant growth promoting (PGP) microorganisms. The role of bacterial-fungal interactions for compost-driven fertilization, however, is still poorly understood. In this study, we investigated whether putative PGP bacteria associate to and disperse along mycelia of fungal isolates. A ‘Fungal highway column system’ was used to isolate and characterize fungal—bacterial couples derived from commercial compost (C), non-composted bulk soil (BS) and rhizosphere soil with compost application (RSC). Bacterial-fungal couples were identified by 16S and 18S rRNA gene sequencing and isolated bacteria were tested for representative PGP traits. Couples of fungi and associated migrator bacteria were isolated from C and RSC only. They included the fungal genera Aspergillus, Mucor, Ulocladium, Rhizopus and Syncephalastrum, and the bacterial genera Rhodococcus, Bacillus, Pseudomonas, Agrobacterium, Glutamicibacter and Microbacterium. Many of migrator bacteria in RSC and C showed PGP traits (e.g., tryptophane—induced auxin synthesis or phytate mineralizing activity) suggesting that fungi contained in C and RSC allow for dispersal of putative PGP bacteria. Next to being provider of nutrients, compost may therefore be source for PGP bacteria and fungal mycelia serving as networks for their efficient dispersal.
dauerhafte UFZ-Verlinkung
González-González, S., Astorga-Eló, M., Campos, M., Wick, L.Y., Acuña, J.J., Jorquera, M.A. (2021):
Compost fungi allow for effective dispersal of putative PGP bacteria
Agronomy-Basel 11 (8), art. 1567 10.3390/agronomy11081567