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New Branch in Fungal Evolution Discovered

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A new study by scientists at the University of Alberta helped classify about 600 fungi that were not previously included in the fungal tree.Research led by Dr. Toby Spribillan associate professor in Alberta, is published in biology today.

ascomycete It accounts for about two-thirds of the named fungal species.>98% known ascomycete belongs to pedizomicochinaIt contains many economically important species as well as diverse pathogens, decomposers and mutualists. ” write Spribil and colleagues.

ascomycete It is the phylum of the fungal kingdom.There are three subphyla of Ascomycetes: Pezizomycotina, Saccharomycotina When tafrino mycotina.

our current knowledge pedizomicochina Evolution is based on a sampling of well-defined taxonomic classes.However, Sprivil and colleagues quarrel “There is considerable diversity undersampling And their effects on evolutionary models have not been well studied. These early diverging lineages are the focus of Spribolle and team’s latest study, in which they obtained the genomes of 30 lineages and investigated their evolution using DNA-based dating techniques.

The researchers likened these fungi to Australian creatures called monotremes. They defy the classification system, and at one point debate erupted as to whether they were real. resemble” To tell sprivil.

Find Fungi Taxonomy Home

The researchers found that all but one class descended from a single origin more than 300 million years ago. This data suggests that animals were once “sprinkled” into her seven different classes. This is a “high level grouping” similar to how animals are subgrouped.

“They were classified, but in very different parts of the fungal side of the tree of life, so people never suspected they were related to each other. To tell Dr. David Diaz Escandonconducted research as part of his doctoral dissertation.

The level of fungal diversity was high and included ‘creepy’ tongue fungi that sprout vertically from the ground and fungi found in tree sap in northern Alberta.

“What’s really interesting is that even though these fungi look very different, they have a lot in common at the level of the genome,” says Spribille. “No one saw this coming.”

Researchers hypothesize that this fungal group depends on other organisms for survival. “Their small genomes mean that this class of fungi has lost much of its ability to integrate several complex carbohydrates.” You can see that there is a kind of symbiotic relationship.”

This finding highlights the need for a broader study of fungal evolution, with a particular focus on how fungi inherit biotechnological traits. The team also proposes that the data could help support our understanding of previous extinction events in the fungal tree. And there aren’t many examples of this kind in fungi,” Spribille concludes.

reference: Diaz-Escandon D, Tagiljanova G, Vanderpour D, et al. Genome-level analysis resolves ancient lineages of commensal Ascomycota. biology today. Doi: 10.1016/j.cub.2022.11.014.

This article press release Published by the University of Alberta. The length and content of the material have been redacted.

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