Research output: Contribution to journal › Article › peer-review
The Ultrastructure of Sanchytrium tribonematis (Sanchytriaceae, Fungi incertae sedis) Confirms its Close Relationship to Amoeboradix. / Karpov, Sergey A.; Vishnyakov, Andrey E.; Moreira, David; López-García, Purificación.
In: Journal of Eukaryotic Microbiology, Vol. 66, No. 6, 11.2019, p. 892-898.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - The Ultrastructure of Sanchytrium tribonematis (Sanchytriaceae, Fungi incertae sedis) Confirms its Close Relationship to Amoeboradix
AU - Karpov, Sergey A.
AU - Vishnyakov, Andrey E.
AU - Moreira, David
AU - López-García, Purificación
PY - 2019/11
Y1 - 2019/11
N2 - Fungi encompass, in addition to classically well-studied lineages, an ever-expanding diversity of poorly known lineages that include, among others, zoosporic chytrid-like parasites. According to recent phylogenetic analysis based on 18S + 28S rRNA concatenated genes two unusual chytrid-like fungi Amoeboradix gromovi and Sanchytrium tribonematis form a monophyletic group, the family Sanchytriaceae, which represents a new divergent taxon that remains incertae sedis within Fungi. Zoospores of Amoeboradix gromovi contain one of the longest kinetosomes known in eukaryotic cells, which are composed of microtubular singlets or doublets. However, the ultrastructure of S. tribonematis, the type species of the genus had not been yet studied. Here, we provide the results of TEM investigations of zoospores and sporangia from two strains of S. tribonematis. The two strains are endowed with unusual features. Like in A. gromovi, amoeboid zoospores of S. tribonematis contain a long kinetosome composed of microtubular singlets, and the two orthogonal centrioles in their sporangia have nine microtubular singlets with an internal ring. The morphological and ultrastructural features of S. tribonematis are now included in the improved taxonomic diagnosis for this species.
AB - Fungi encompass, in addition to classically well-studied lineages, an ever-expanding diversity of poorly known lineages that include, among others, zoosporic chytrid-like parasites. According to recent phylogenetic analysis based on 18S + 28S rRNA concatenated genes two unusual chytrid-like fungi Amoeboradix gromovi and Sanchytrium tribonematis form a monophyletic group, the family Sanchytriaceae, which represents a new divergent taxon that remains incertae sedis within Fungi. Zoospores of Amoeboradix gromovi contain one of the longest kinetosomes known in eukaryotic cells, which are composed of microtubular singlets or doublets. However, the ultrastructure of S. tribonematis, the type species of the genus had not been yet studied. Here, we provide the results of TEM investigations of zoospores and sporangia from two strains of S. tribonematis. The two strains are endowed with unusual features. Like in A. gromovi, amoeboid zoospores of S. tribonematis contain a long kinetosome composed of microtubular singlets, and the two orthogonal centrioles in their sporangia have nine microtubular singlets with an internal ring. The morphological and ultrastructural features of S. tribonematis are now included in the improved taxonomic diagnosis for this species.
KW - Flagellar apparatus
KW - kinetosome
KW - taxonomy
KW - zoospore
KW - zoosporic fungi
KW - ORDER
KW - SP-NOV
KW - GEN.
UR - http://www.scopus.com/inward/record.url?scp=85066461942&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/ultrastructure-sanchytrium-tribonematis-sanchytriaceae-fungi-incertae-sedis-confirms-close-relations
U2 - 10.1111/jeu.12740
DO - 10.1111/jeu.12740
M3 - Article
AN - SCOPUS:85066461942
VL - 66
SP - 892
EP - 898
JO - Journal of Eukaryotic Microbiology
JF - Journal of Eukaryotic Microbiology
SN - 1066-5234
IS - 6
ER -
ID: 42958381