Molecular, morphological and phylogenetic characterization of six chlorarachniophyte strains
Molecular, morphological and phylogenetic characterization of six chlorarachniophyte strains
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DOI：
10.1046/j.1440-1835.1999.00146.x
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发表时间：
1999-03-01
影响因子：
1.5
通讯作者：
McFadden, Geoff I.
中科院分区：
文献类型：
--
作者：
Gilson, Paul R.;McFadden, Geoff I.
我们比较和对比的形态和分子特征的六个绿藻菌株，并检查其进化起源。电子显微镜研究的核型和叶绿体，核型核型的表征，和小亚基核糖体RNA（srRNA）基因的系统发育分析，来自核型和宿主细胞基因组已被用来分离成三个不同的组的六个菌株。其中一组被称为“野兽组”，包含Chlorarachnion sp. 242，Chlorarachnion sp. 621，Chlorarachnion sp. 1408和Chlorarachnion sp. 1481菌株。该动物群的成员有一种新的鞭毛虫形式，显然是皮科动物。其他两个组目前只包含一个物种：Chlorarachnion reptans和Lotharella sp. 240。所有的绿藻核型检查房子三个小的线性染色体，每个配备端粒和srRNA基因。
We compare and contrast the morphological and molecular features of six chlorarachniophyte strains, and examine their evolutionary origins. Electron microscopical studies of nucleomorphs and chloroplasts, characterization of nucleomorph karyotypes, and phylogenetic analyses of small subunit ribosomal RNA (srRNA) genes derived from the nucleomorph and host cell genomes have been used to separate the six strains into three distinct groups. One group, dubbed the 'beast group', contains the strains Chlorarachnion sp. 242, Chlorarachnion sp. 621, Chlorarachnion sp. 1408 and Chlorarachnion sp. 1481. Members of the beast group have a novel flagellate form and are apparently picoplanktonic. The other two groups currently contain only one species each: Chlorarachnion reptans and Lotharella sp. 240. All chlorarachniophyte nucleomorphs examined house three small linear chromosomes each furnished with telomeres and srRNA genes.