Investigation of a freshwater acrochaetioid alga (Rhodophyta) with molecular and morphological methods
Investigation of a freshwater acrochaetioid alga (Rhodophyta) with molecular and morphological methods
复制标题
用分子和形态学方法研究淡水多毛藻（红藻）
DOI：
10.1111/njb.00407
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发表时间：
2014-10-01
影响因子：
0.9
通讯作者：
Xie, Shu-Lian
中科院分区：
文献类型：
--
作者：
Chen, Le;Feng, Jia;Xie, Shu-Lian
在北方山西省娘子关泉采集到一种神秘的端毛类线虫。形态学资料表明，该菌完全以单孢子囊无性繁殖，其形态特征表明它可能属于异孢Audouinella heterospora。为了确定其系统发育位置，系统发育树重建使用的部分序列的质体编码基因（rbcL）和核编码基因（SSU rDNA）应用贝叶斯推理（BI），最大简约法（MP）和最大似然法（ML）。然而，系统发育重建表明，这acrochaetioidae不属于一个分支与属Audouinella，但形成一个分支与Thorea hispida（Thoreales）。在此基础上，得出了A. heterospora代表T.硬毛。
An enigmatic acrochaetioid alga was collected from Niangziguan spring in Shanxi Province, northern China. Morphological data indicated that this alga reproduces exclusively asexually by monosporangia and its morphological characteristics suggested that it might be referred to Audouinella heterospora. To ascertain its phylogenetic position, phylogenetic trees were reconstructed using partial sequences of the plastid-encoded gene (rbcL) and the nuclear-encoded gene (SSU rDNA) applying Bayesian inference (BI), maximum parsimony (MP) and maximum likelihood (ML). However, phylogenetic reconstructions showed that this acrochaetioid alga does not belong in a clade with the genus Audouinella, but forms a clade with Thorea hispida (Thoreales). Based on this analysis it is concluded that A. heterospora represents the ‘chantransia’ stage of T. hispida.