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Morphogenesis of a unique pseudourostylid ciliate, Trichototaxis songi (Ciliophora, Urostylida).
MedLine Citation:
PMID:  24161604     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Divisional morphogenesis in the freshwater spirotrichous ciliate, Trichototaxis songiChen et al., 2007, was investigated. The main morphogenetic events are characterised as follows: (1) the parental oral apparatus is completely renewed by the independently formed oral primordium in the proter; (2) the oral primordium in the opisthe is formed on the cell surface; (3) several left cirri of the midventral pairs participate in the formation of the oral primordium in the opisthe; (4) FVT-anlage I forms the leftmost pair of the bicorona; (5) the macronuclear nodules fuse into many masses rather than a single or branched mass as described in most pseudokeronopsids; and (6) usually, two marginal anlagen develop within each left marginal row separately. However, the number of left marginal anlagen is highly variable, even differing between the proter and opisthe of the same divider. The increase in the number of left marginal anlagen is by de novo generation of small anlagen to the left of the intrakinetal left marginal anlage, whereas the decrease in number is by resorption of the old marginal row(s). We posit that Trichototaxis is an intermediate form between the Pseudourostylidae and Pseudokeronopsidae as it shares morphogenetic features with both. Additionally, as in Uroleptopsis (Uroleptopsis), FVT-anlage I forms the leftmost pair of the bicorona in Trichototaxis indicating these genera may be closely related.
Authors:
Chen Shao; Zhao Lv; Lipei Jin; Alan Warren
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-9-27
Journal Detail:
Title:  European journal of protistology     Volume:  -     ISSN:  1618-0429     ISO Abbreviation:  Eur. J. Protistol.     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-10-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8917383     Medline TA:  Eur J Protistol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013. Published by Elsevier GmbH.
Affiliation:
The Key Laboratory of Biomedical Information Engineering, Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China.
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