The Unicellular, Parasitic Fungi, Sanchytriomycota, Possess a DNA Sequence Possibly Encoding a Long Tubulin Polymerization Promoting Protein (TPPP) but Not a Fungal-Type One

The unicellular, parasitic fungi of the phylum Sanchytriomycota (sanchytrids) were discovered a few years ago. These unusual chytrid-like fungi parasitize algae. The zoospores of the species of the phylum contain an extremely long kinetosome composed of microtubular singlets or doublets and a non-mo...

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Bibliographic Details
Published in:Microorganisms (Basel) 2023-08, Vol.11 (8), p.2029
Main Author: Orosz, Ferenc
Format: Article
Language:English
Subjects:
Algae
Amoeboradix gromovi
Animals
ciliome
Classification
Deoxyribonucleic acid
DNA
Flagella
flagellum
Fungi
Fungi, Pathogenic
Gene sequencing
Genetic aspects
Identification and classification
Nucleotide sequence
p25 Protein
p25alpha domain
Parasites
Parasitological research
Phylogenetics
Phylogeny
Polymerization
Proteins
pseudocilium
Tubulin
Tubulins
Zoospores
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Summary:The unicellular, parasitic fungi of the phylum Sanchytriomycota (sanchytrids) were discovered a few years ago. These unusual chytrid-like fungi parasitize algae. The zoospores of the species of the phylum contain an extremely long kinetosome composed of microtubular singlets or doublets and a non-motile pseudocilium (i.e., a reduced posterior flagellum). Fungi provide an ideal opportunity to test and confirm the correlation between the occurrence of flagellar proteins (the ciliome) and that of the eukaryotic cilium/flagellum since the flagellum occurs in the early-branching phyla and not in terrestrial fungi. Tubulin polymerization promoting protein (TPPP)-like proteins, which contain a p25alpha domain, were also suggested to belong to the ciliome and are present in flagellated fungi. Although sanchytrids have lost many of the flagellar proteins, here it is shown that they possess a DNA sequence possibly encoding long (animal-type) TPPP, but not the fungal-type one characteristic of chytrid fungi. Phylogenetic analysis of p25alpha domains placed sanchytrids into a sister position to Blastocladiomycota, similarly to species phylogeny, with maximal support.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms11082029