Reconsideration of the phylogenetic positions of three stichotrichous genera Holosticha,Anteholosticha and Pseudokeronopsis (Spirotrichea:Ciliophora) inferred from complete SSU rRNA gene sequences

作     者：Mann Kyoon Shin Alan Warren Khaled A.S.Al-Rasheid Abdulaziz A.Al-Khedhairy Saud Al-Arifi 

作者机构：Department of BiologyUniversity of Ulsan Department of ZoologyThe Natural History Museum  3. Zoology DepartmentKing Saud University 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2009年第19卷第6期

页      面：769-773页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 08[工学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.30670280 and 40676076) partially supported by the Center of Excellence in Biodiversity Research and the DNA Research Chair,King Saud University 

主　　题：Urostylidae Clade Evolution Taxonomy 

摘      要：The small subunit rRNA (SSU rRNA) gene for six marine stichotrichs, Pseudokeronopsis carnea, P. flava, Holosticha heterofoissneri, H. diademata, H. bradburyae and Anteholosticha manca, was sequenced and characterized. Using this molecular information, the phylogenetic positions of three related genera, Pseudokeronopsis, Holosticha and Anteholosticha were determined. The results indicate that the family Urostylidae is clearly separated from the family Pseudokeronopsidae. The present phylogenetic analyses unambiguously placed Pseudokeronopsis close to Holosticha, and support the conclusion that these genera should be regarded as the members of the order Urostylidae within the stichotrich clade. Furthermore, the results of this study also support the monophyly of the genus Pseud-okeronopsis, the redefinition of Holosticha s. str. and the placement of Anteholosticha in a clade separate from Holosticha.