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题名: Evolution of the Germline Actin Gene in Hypotrichous Ciliates: Multiple Nonscrambled IESs at Extremely Conserved Locations in Two Urostylids
作者: Chen, Tianbing1; Yi, Zhenzhen1; Huang, Jie2; Lin, Xiaofeng1
通讯作者: Yi, ZZ (reprint author), S China Normal Univ, Key Lab Ecol & Environm Sci Guangdong Higher Educ, Guangzhou 510631, Guangdong, Peoples R China.
关键词: Actin ; ciliates ; macronuclear ; MDS ; micronuclear
刊名: JOURNAL OF EUKARYOTIC MICROBIOLOGY
发表日期: 2015-03-01
DOI: 10.1111/jeu.12158
卷: 62, 期:2, 页:188-195
收录类别: SCI
文章类型: Article
部门归属: [Chen, Tianbing ; Yi, Zhenzhen ; Lin, Xiaofeng] S China Normal Univ, Sch Life Sci, Lab Protozool, Guangzhou 510631, Guangdong, Peoples R China ; [Huang, Jie] Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Microbiology
研究领域[WOS]: Microbiology
英文摘要: In hypotrichous ciliates, macronuclear chromosomes are gene-sized, and micronuclear genes contain short, noncoding internal eliminated segments (IESs) as well as macronuclear-destined segments (MDSs). In the present study, we characterized the complete macronuclear gene and two to three types of micronuclear actin genes of two urostylid species, i.e. Pseudokeronopsis rubra and Uroleptopsis citrina. Our results show that (1) the gain/loss of IES happens frequently in the subclass Hypotrichia (formerly Stichotrichia), and high fragmentation of germline genes does not imply for gene scrambling; and (2) the micronuclear actin gene is scrambled in the order Sporadotrichida but nonscrambled in the orders Urostylida and Stichotrichida, indicating the independent evolution of MIC-actin gene patterns in different orders of hypotrichs; (3) locations of MDS-IES junctions of micronuclear actin gene in coding regions are conserved among closely related species.
关键词[WOS]: TELOMERE-BINDING-PROTEIN ; DNA-POLYMERASE-ALPHA ; RIBOSOMAL-RNA GENE ; SCRAMBLED GENE ; OXYTRICHA-NOVA ; CHILODONELLA-UNCINATA ; I GENE ; MACRONUCLEAR ; CILIOPHORA ; PROTOZOA
语种: 英语
WOS记录号: WOS:000350501600003
ISSN号: 1066-5234
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23880
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.S China Normal Univ, Sch Life Sci, Lab Protozool, Guangzhou 510631, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
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