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Researchers at Los Alamos National Laboratory screened a variety of fungal isolates obtained from all over the world to look for potential bacterial associations
Image source: Los Alamos National Laboratory
In a novel and extensive assessment of bacteria-fungal interactions, researchers used unique bioinformatics to find that the bacterial diversity of fungal hosts is significant, which makes bacteria-fungal interactions more common and diverse than previously known
"So far, examples of bacterial-fungal interactions have been very limited in number and diversity," said Aaron Robinson, a biologist at Los Alamos National Laboratory
This research contributes to a new understanding of the fungal flora, that is, the presence of bacteria in and closely related to the fungal host, in order to more closely study the interaction and link the research to issues such as ecosystem functions and the impact of climate change.
"This is a starting point for studying the mechanism of bacterial-fungal interaction at a more intimate level," Robinson said
The researchers screened 294 different fungal isolates from four cultures in Europe, North America and South America to look for potential bacterial associations
These fluorescence microscopy examinations complemented the screening and confirmed the presence of a broad and different bacterial association in different fungal isolates, even in the hyphae (fungal tissues) of a single fungal host
In addition to screening cultures, the research team also screened 408 fungal genome sequencing projects from the MycoCosm portal, a fungal genome project library developed and maintained by the Joint Genome Research Institute of the Ministry of Energy
Among the fungal genome projects examined, 79% of bacterial characteristics were detected
Of the 702 fungal isolates tested by the research team, 88% of the bacterial associations were found—an unexpected detection rate compared to previous more limited studies
The study's overview and description of various fungal-bacterial associations provides a way to understand these associations more deeply
In the context of changing climate conditions, understanding how bacteria-fungal interactions affect plants, animals, and general ecosystem functions under different environments and different conditions (such as drought and warming) will also help predict and potentially manipulate The impact of these interactions
