MOLECULAR PHYLOGENY OF THE CLADOPHORACEAE (CLADOPHORALES, ULVOPHYCEAE), WITH THE RESURRECTION OF ACROCLADUS NAGELI AND WILLEELLA BORGESEN, AND THE DESCRIPTION OF LURBICA GEN. NOV AND PSEUDORHIZOCLONIUM GEN. NOV.
MOLECULAR PHYLOGENY OF THE CLADOPHORACEAE (CLADOPHORALES, ULVOPHYCEAE), WITH THE RESURRECTION OF ACROCLADUS NAGELI AND WILLEELLA BORGESEN, AND THE DESCRIPTION OF LURBICA GEN. NOV AND PSEUDORHIZOCLONIUM GEN. NOV.
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DOI：
10.1111/jpy.12457
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发表时间：
2016-12-01
影响因子：
2.9
通讯作者：
Zuccarello, Giuseppe C.
中科院分区：
文献类型：
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作者：
Boedeker, Christian;Leliaert, Frederik;Zuccarello, Giuseppe C.
刚毛藻科（Cladophoraceae）是丝状绿色藻类的一个大科，由于其形态简单、平行进化、表型可塑性和未知的分布范围，长期以来一直存在分类学问题。部分大亚基（LSU）rDNA序列生成的362个分离物，和一个串联的数据集组成的独特的LSU和小亚基（SSU）rDNA序列的95个标本的分析，大大澄清了刚毛藻科的系统发育。系统发育重建结果表明，目前公认的毛藻属、刚毛藻属和丝菌属是多系的。主干的系统发育是强大的，主要谱系的关系被推断与高支持率，只有毛藻melagonium和刚毛藻的系统发育位置不能明确推断。在刚毛藻科中，分枝和不分枝的形态之间至少有三个独立的转换。淡水环境已经殖民两次独立，即由淡水刚毛藻物种以及由几个谱系的Rhizoclonium riparium分支。在努力建立单系属，Acrocladus和Willeella复活和两个新的属被描述：Pseudorhizoclonium和Lurbica。
The taxonomy of the Cladophoraceae, a large family of filamentous green algae, has been problematic for a long time due to morphological simplicity, parallel evolution, phenotypic plasticity, and unknown distribution ranges. Partial large subunit (LSU) rDNA sequences were generated for 362 isolates, and the analyses of a concatenated dataset consisting of unique LSU and small subunit (SSU) rDNA sequences of 95 specimens greatly clarified the phylogeny of the Cladophoraceae. The phylogenetic reconstructions showed that the three currently accepted genera Chaetomorpha, Cladophora, and Rhizoclonium are polyphyletic. The backbone of the phylogeny is robust and the relationships of the main lineages were inferred with high support, only the phylogenetic position of both Chaetomorpha melagonium and Cladophora rupestris could not be inferred unambiguously. There have been at least three independent switches between branched and unbranched morphologies within the Cladophoraceae. Freshwater environments have been colonized twice independently, namely by the freshwater Cladophora species as well as by several lineages of the Rhizoclonium riparium clade. In an effort to establish monophyletic genera, the genera Acrocladus and Willeella are resurrected and two new genera are described: Pseudorhizoclonium and Lurbica.