1. Strains of the Morphospecies Ploeotia costata (Euglenozoa) Isolated from the Western North Pacific (Taiwan) Reveal Substantial Genetic Differences.
- Author
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Chan, Ya‐Fan, Chiang, Kuo‐Ping, Chang, Jeng, Moestrup, Øjvind, and Chung, Chih‐Ching
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ZOOFLAGELLATES , *EUGLENOIDS , *ULTRASTRUCTURE (Biology) , *COASTS , *MICROTUBULES - Abstract
Two phagotrophic euglenid strains (Strains Pac and Tam) were isolated from coastal locations in Taiwan. Ultrastructural characteristics of the strains included five pellicle strips joined at the posterior end. The strips were formed by major grooves with bifurcated edges. At the cell anterior, the feeding structure formed a lip. Underneath the lip was a comb composed of layers of microtubules. Farther back, two supporting rods tapered toward the posterior end, and a number of vanes with attached microtubules were present between the rods. The morphological characteristics agree with Ploeotia costata Strain CCAP 1265/1. However, the 18S r DNA sequences of Strains Pac/Tam lacked a group I intron and possessed three extra insertions of 116, 67, and 53 bp. Phylogenetic analysis indicated low sequence similarity between Strains Pac/Tam and CCAP 1265/1 (92%). The morphospecies P. costata apparently includes a substantial level of DNA sequence divergence, and likely represents multiple molecular species units. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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