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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/3472

Title: Morphogenesis of the Marine Ciliate, Pseudoamphisiella alveolata (Kahl, 1932) Song & Warren, 2000 (Ciliophora, Stichotrichia, Urostylida) During Binary Fission
Authors: Shao, Chen
Song, Weibo
Warren, Alan
AL-Rasheid, Khaled A.S.
YI, Zhenzhen
Gong, Jun
Keywords: Cell division
Protozoa
Pseudoamphisiellidae
SS rRNA gene sequences
Systematic position
Issue Date: 2006
Publisher: International Society of Protistologists
Citation: Journal of Eukaryotic Microbiology: 53 (5);388-396
Abstract: Morphogenesis during the binary fission of the stichotrich ciliate Pseudoamphisiella alveolata, isolated from Jiaozhou Bay near Qingdao, China, was investigated using protargol silver impregnation. The process is characterized as follows: (1) in the proter, only the posterior part of the parental adoral zone of membranelles is renewed, where the membranelles dedifferentiate and then rebuild the UM-anlage and the missing membranelles, (2) the oral primordium in the opisthe and the FVT-anlagen in both dividers are formed de novo on the cell surface, (3) an ‘‘extra’’ anlage, which is generated on the right of the right marginal anlage, develops into three or four ‘‘extra’’ marginal cirri that connect the caudal cirri with the marginal rows, (4) the right marginal anlage is formed within the old structure, (5) the FVT-cirri develop in a primary mode, and (6) unlike most stichotrichs, the right marginal anlagen in both dividers generate closely together. As an additional contribution, the diversity of morphogenetic patterns within the genus Pseudoamphisiella is discussed. Based on both morphogenetic and SS rRNA gene sequencing data, the systematic position of the genus Pseudoamphisiella as well as the family Pseudoamphisiellidae Song et al. 1997 is briefly analyzed. The results indicate that they should very possibly represent a higher evolved group in the order Urostylida.
Description: a) Laboratory of Protozoology, KLM, Ocean University of China, Qingdao, 266003, China, and b) Laboratory of Protozoology, College of Life Sciences, South China Normal University, Guangzhou 510631, China, and c) Department of Zoology, Natural History Museum, Cromwell Road, London SW7 5BD, UK, and d) Zoology Department, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia.
URI: http://hdl.handle.net/123456789/3472
http://dx.doi.org/10.1111/j.1550-7408.2006.00117.x
Appears in Collections:College of Science

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