Multiple origins of the ascidian-Prochloron symbiosis: Molecular phylogeny of photosymbiotic and non-symbiotic colonial ascidians inferred from 18S rDNA sequences

In the present study, we described a novel myxosporean species, Myxobolus jialingensis n. sp. (Myxozoa: Myxobolidae), which infected the urinary bladder and hepatopancreas of yellowhead catfish Tachysurus fulvidraco in China. The mature spores of M. jialingensis n. sp. were pyriform with the length of 15.8 ± 0.7 (15.4–17.0) μm and width of 8.0 ± 0.3 (7.8–8.9) μm. Two pyriform polar capsules were slightly unequal in size: the larger polar capsule was 7.4 ± 0.3 (6.7–8.0) μm in length and 3.1 ± 0.2 (2.8–3.6) μm in width; and the smaller polar capsule measured 7.3 ± 0.3 (6.6–8.1) μm in length and 3.3 ± 0.2 (2.9–3.6) μm in width. The polar capsules were directed toward the apex of the spore, packing seven to eight spirals of the polar filaments. The small subunit ribosomal RNA gene (18S rDNA) sequence of M. jialingensis n. sp. was unique among all myxozoans, and the highest similarity was 96.1% with M. voremkhai. Phylogenetic analysis based on 18S rDNA sequences revealed that myxosporeans infecting the close host affinity (belonging to the same order) had close phylogenetic relationship and, some myxosporeans infecting the same host order might have multiple origins.

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Molecular Phylogeny of the Family Ophryscolecidae (Ciliophora, Litostomatea) Inferred from 18S rDNA Sequences

Journal of Eukaryotic Microbiology ◽

10.1111/jeu.12211 ◽

2015 ◽

Vol 62 (5) ◽

pp. 584-590 ◽

Cited By ~ 3

Author(s):

Mariana F. Rossi ◽

Roberto Júnio. P. Dias ◽

Marcus V. X. Senra ◽

Isabel Martinele ◽

Carlos A. G. Soares ◽

...

Keyword(s):

Molecular Phylogeny ◽

18S Rdna ◽

Rdna Sequences ◽

The Family ◽

18S Rdna Sequences

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Molecular phylogeny of the Bivalvia inferred from 18S rDNA sequences with particular reference to the Pteriomorphia

Geological Society London Special Publications ◽

10.1144/gsl.sp.2000.177.01.02 ◽

2000 ◽

Vol 177 (1) ◽

pp. 11-29 ◽

Cited By ~ 23

Author(s):

Gerhard Steiner ◽

Sabine Hammer

Keyword(s):

Molecular Phylogeny ◽

18S Rdna ◽

Rdna Sequences ◽

18S Rdna Sequences

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Molecular phylogeny of the family Bacillariaceae based on 18S rDNA sequences: focus on freshwaterNitzschiaof the sectionLanceolatae

Diatom Research ◽

10.1080/0269249x.2011.597988 ◽

2011 ◽

Vol 26 (3) ◽

pp. 273-291 ◽

Cited By ~ 36

Author(s):

Frédéric Rimet ◽

Lenaïg Kermarrec ◽

Agnès Bouchez ◽

Lucien Hoffmann ◽

Luc Ector ◽

...

Keyword(s):

Molecular Phylogeny ◽

18S Rdna ◽

Rdna Sequences ◽

The Family ◽

18S Rdna Sequences

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Morphology and Molecular Phylogeny of the Soil Ciliate Cyrtohymena seorakensis sp. n. (Ciliophora, Hypotricha, Oxytrichidae)

Zootaxa ◽

10.11646/zootaxa.4758.3.8 ◽

2020 ◽

Vol 4758 (3) ◽

pp. 561-572

Author(s):

ATEF OMAR ◽

JAE-HO JUNG

Keyword(s):

Phylogenetic Analysis ◽

New Species ◽

Molecular Phylogeny ◽

18S Rdna ◽

Indian Population ◽

Cortical Granules ◽

Moss Sample ◽

Rdna Sequences ◽

18S Rdna Sequences ◽

Soil Ciliate

The morphology and infraciliature of a new ciliate, Cyrtohymena seorakensis sp. n., discovered in a moss sample from South Korea, were investigated. The new species is distinguished from congeners by having rather fewer, randomly scattered, yellowish cortical granules, 23–30 adoral membranelles, invariably four transverse cirri in morphostatic specimens, and a total of 62 dorsal bristles on average. Phylogenetic analysis based on 18S rDNA sequences showed that the new species clusters with an Indian population of C. citrina.

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