Fungalpedia – Note 10 Crispospora
Crispospora Y.S. Tokarev, V.N. Voronin, E.V. Seliverstova, O.A. Pavlova & I.V. Issi
Citation if using this entry: Fahalli et al. (2023) New genera in 2010-2011. Mycosphere (in press)
Index Fungorum Identifier 646569, Facesoffungi, MycoBank, GenBank, Fig 1.
The monotypic genus Crispospora with type species Crispospora chironomid was established in Microsporidia, Protozoa by Tokarev et al. (2010). Crispospora chironomid was isolated from larval adipose tissue of Chironomus plumosus in northwest European Russia. The parasite invades the gut epithelium of the host larvae and has two types of sporogonies, polysporoblastic and disporoblastic, both develop within the same host cell. A thick-walled capsule with several spherical monokaryotic spores is generated in the first type of sporogonial sequence (Tokarev et al. 2010). Diplokaryotic oval spores in the second type of sporogonial, form within a compartment that is partially encircled with multilayered membranes. The genus name reflects the exospore protrusions that resemble curls (Crispus in Latin) in the spores of the first type. Exospores of monokaryotic spores have bundles of tubular protrusions, and both types of spores have highly developed extrusion apparatus despite their very small diameters. These characteristics and phylogenetic analyses based on SSU allowed the establishment of the new microsporidium genus (Tokarev et al. 2010).
Fig 1 – Crispospora chironomi sp. n. (Photo credits: Collection of Prof. Irma V. Issi, provided by Yuri Tokarev, All-Russian Institute of Plant Protection, St. Petersburg). a Several spore-bearing capsules on a smear from heavily infected host tissue. b Monokaryotic spore (first type of spore) of Crispospora chironomid. AD anchoring disk, En endospore, Ex exospore, Pp1 anterior part of the polaroplast, Pp2 posterior part of the polaroplast, PS polar sac. c Diplokaryotic spore (second type of spore) of Crispospora chironomid, DK diplokaryon. d Exospore in first type of spore. Scale bars: a=10 μm, b-c=0.76 μm, d=0.38 μm.
Type species: Crispospora chironomi Y.S. Tokarev, V.N. Voronin, E.V. Seliverstova, O.A. Pavlova & I.V. Issi
Reference
Tokarev YS, Voronin VN, Seliverstova EV, Pavlova OA, Issi IV. 2010- Life cycle, ultrastructure, and molecular phylogeny of Crispospora chironomi gn sp. n. (Microsporidia: Terresporidia), a parasite of Chironomus plumosus L. (Diptera: Chironomidae). Parasitology research 107, 1381-1389. https://doi.org/10.1007/s00436-010-2012-x
Entry by
Maryam Fallahi, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
(Edited by Kevin D Hyde)