Morphogenesis of a unique pseudourostylid ciliate,Trichototaxis songi (Ciliophora,Urostylida) |
| |
| Institution: | 1. 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;2. School of Life Sciences, SunYat-Sen (Zhongshan) University, Guangzhou 510275, PR China;3. Department of Life Sciences, Natural History Museum, London SW7 5BD, UK;1. Department of Pathology and Parasitology, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic;2. Central European Institute of Technology, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic;3. Department of Bacteriology, Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic;4. Department of Biology and Wildlife Diseases, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic;5. Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Brno and Studenec, Czech Republic;1. Department of Business Administration, University of Barcelona, Av. Diagonal 690, 08034 Barcelona, Spain;2. Manchester Business School, University of Manchester, Booth Street West, M15 6PB Manchester, UK;1. Clinical Laboratory of China Meitan General Hospital, Beijing, PR China;2. Department of Abdominal Surgery, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China;3. Department of Thoracic Surgery, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China;4. Department of Thoracic Surgery, Navy General Hospital of Chinese PLA, Beijing, PR China;5. Center for Basic Medical Science, Navy General Hospital of Chinese PLA, Beijing, PR China;6. State Key Laboratory of Molecular Oncology, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China;1. STC “Institute for Single Crystals”, NAS of Ukraine, 60 Lenin Ave., 61001 Kharkov, Ukraine;2. Frantsevich Institute for Problems of Materials Science, NAS of Ukraine, 3 Krzhizhanovsky Str., 03680 Kyiv, Ukraine;3. Ural Federal University, 19 Mira Str., 620002 Yekaterinburg, Russia;4. V.Bakul Institute for Superhard Materials, NAS of Ukraine, 2 Avtozavodskaya Str., 04074 Kyiv, Ukraine |
| |
| Abstract: | Divisional morphogenesis in the freshwater spirotrichous ciliate, Trichototaxis songi Chen 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. |
| |
| Keywords: | Freshwater species Hypotrichia Morphogenesis Pseudourostylidae Reorganisation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
