Compost fungi allow for effective dispersal of putative PGP bacteria
Autor
González-González, Susett
Astorga-Eló, Marcia
Campos, Marco A.
Wick, Lukas Y.
Acuña, Jacquelinne J.
Jorquera, Milko A.
Resumen
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.
Colecciones
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Article
Composition and Potential Functions of Rhizobacterial Communities in a Pioneer Plant from Andean Altiplano (2022)
Zhang, Qian; Araya, Macarena A.; Astorga-Eló, Marcia; Velásquez, Gabriela; Rilling, Joaquín Ignacio; Campos, Marco A.; Sadowsky, Michael Jay; Jorquera, Milko A.; Acuña, Jacquelinne J. (MDPI, 2022-01)Plant microbiota that associate with pioneer plants are essential to their growth and adaptation to harsh conditions found in the Central Volcanic Zone of the Andes. In this sense, the rhizosphere of pioneer species ... -
Article
Airborne bacterial community associated with fine particulate matter (PM2.5) under different air quality indices in Temuco city, southern Chile (2022)
Acuña, Jacquelinne J.; Ruiz-Gil, Tay; Marileo, Luis G.; Carrazana, Elizabeth; Rilling, Joaquín Ignacio; Campos, Marco A.; Correa-Araneda, F. J.; Fujiyoshi, So; Jorquera, Milko A. (Springer Science and Business Media Deutschland GmbH, 2022-02)Temuco (Chile) is one of the most polluted cities in Chile and Latin America. Although the fine fraction of particulate matter (PM2.5) has been extensively studied and monitored due to its negative impact on public health, ... -
Article
Pseudomonas atacamensis sp. nov., isolated from the rhizosphere of desert bloom plant in the region of Atacama, Chile (2020)
Poblete-Morales M.; Carvajal D.; Almasia R.; Michea S.; Cantillana C.; Levican A.; Silva-Moreno E. (Springer, 2020)