期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 71, 期 10, 页码 -出版社
MICROBIOLOGY SOC
DOI: 10.1099/ijsem.0.005071
关键词
biodiversity; ciliature; new taxon; peniculids; SSU rRNA gene
类别
资金
- Natural Science Foundation of China [32030015, 32070432, 32100404]
- China Postdoctoral Science Foundation [2020M672141]
- Fundamental Research Funds for the Central Universities
The newly identified freshwater ciliate named Frontonia apoacuminata sp. nov. displays distinct cellular morphology and ciliature, with notable differences from its congeners in aspects such as cell shape and arrangement of ophryokineties. Additionally, the study offers an improved diagnosis for Frontonia acuminata. Phylogenetic analysis based on the SSU rRNA gene shows that F. apoacuminata sp. nov. clusters with several other Frontonia species and groups with Disematostoma, Marituja, and Stokesia, indicating polyphyly within the genus Frontonia.
The morphology and ciliature of a new freshwater ciliate, Frontonia apoacuminata sp. nov., isolated from an artificial pond in Qingdao, PR China, were investigated using live observation and silver staining methods. The main features separating F. apoacuminata sp. nov. from its congeners are as follows: a broad elliptical body that is slightly pointed at the posterior end, four ophryokineties, one or two spherical micronuclei of a 'compact' type, a dorsally positioned contractile vacuole, and peniculi 1-3 each with five kinetosome rows though the left -most two rows in peniculus 3 are extremely shortened (with only two or three kinetosomes each). Additionally, an improved diagnosis of F. acuminata is provided. Phylogenetic analyses based on the small subunit ribosomal RNA (SSU rRNA) gene show that F. apoacuminata sp. nov. clusters with F. atra, F. minuta, F. acuminata and F. terricola. These five species group with Disematostoma, Marituja and Stokesia rather than with other Frontonia species, causing polyphyly of the genus Frontonia.
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