Molecular phylogeny and taxonomic revision of the genus Wittrockiella (Pithophoraceae, Cladophorales), including the descriptions of W.?australis sp. nov. and W.?zosterae sp. nov.
Molecular phylogeny and taxonomic revision of the genus Wittrockiella (Pithophoraceae, Cladophorales), including the descriptions of W.?australis sp. nov. and W.?zosterae sp. nov.
复制标题
Wittrockiella 属（Pithophoraceae，Cladophorales）的分子系统发育和分类学修订，包括 W.?australis sp 的描述。
DOI：
10.1111/jpy.12530
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发表时间：
2017
影响因子：
2.9
通讯作者：
Zuccarello Giuseppe C.
中科院分区：
文献类型：
--
作者：
Boedeker Christian;O'Kelly Charles J.;West John A.;Hanyuda Takeaki;Neale Adele;Wakana Isamu;Wilcox Mike D.;Karsten Ulf;Zuccarello Giuseppe C.
Wittrockiella是丝状绿色藻类的一个小属，出现在盐度降低或波动的栖息地。这些藻类的基本生物学的许多方面仍然是未知的，属内的系统发育关系尚未得到充分探讨。我们提供了一个基于三个核糖体标记（ITS，LSU和SSU rDNA）的属，包括广泛的种内取样为W. lyalliiandW. salina，建议使用现有的名称，并强调其生理学和生活史方面。分子生物学数据表明，Wittrockiella有5种。描述了两个新种：澳大利亚瓦氏菌（W. australis）和带状瓦氏菌（W. zosterae），两者都是内生菌。虽然莱氏两栖类和盐沼两栖类在形态上可以区分，但它们之间没有可区分的形态特征。对一系列低分子量碳水化合物进行了分析，但证明在分类学上没有信息。由于在日本的半咸水湖泊中发现了该物种，因此该物种的分布范围扩展到了北方半球。此外，它表明，没有理由承认W. salinavar.kraftii，这是描述为一个特有的品种，从一个淡水栖息地的豪勋爵岛，澳大利亚。培养实验表明，澳洲梭子蟹更喜欢在低盐度的海水中生长。两栖类和带状两栖类的有性生殖都有记载，这些物种的分裂可能归因于多倍化。
Wittrockiellais a small genus of filamentous green algae that occurs in habitats with reduced or fluctuating salinities. Many aspects of the basic biology of these algae are still unknown and the phylogenetic relationships within the genus have not been fully explored. We provide a phylogeny based on three ribosomal markers (ITS, LSU, and SSU rDNA) of the genus, including broad intraspecific sampling forW. lyalliiandW. salina, recommendations for the use of existing names are made, and highlight aspects of their physiology and life cycle. Molecular data indicate that there are five species ofWittrockiella. Two new species,W. australisand W. zosterae, are described, both are endophytes. AlthoughW. lyalliiandW. salinacan be identified morphologically, there are no diagnostic morphological characters to distinguish betweenW. amphibia,W. australis, andW. zosterae. A range of low molecular weight carbohydrates were analyzed but proved to not be taxonomically informative. The distribution range ofW. salinais extended to the Northern Hemisphere as this species has been found in brackish lakes in Japan. Furthermore, it is shown that there are no grounds to recognizeW. salinavar.kraftii, which was described as an endemic variety from a freshwater habitat on Lord Howe Island, Australia. Culture experiments indicate thatW. australishas a preference for growth in lower salinities over full seawater. ForW. amphibiaandW. zosterae, sexual reproduction is documented, and the split of these species is possibly attributable to polyploidization.