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首页> 外文期刊>Bulletin of the National Museum of Nature and Science >Species Diversity of the Genus Ulva (Ulvophyceae, Chlorophyta)in Japanese Waters, with Special Reference to Ulva tepida Masakiyo et S. Shimada sp. nov.
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Species Diversity of the Genus Ulva (Ulvophyceae, Chlorophyta)in Japanese Waters, with Special Reference to Ulva tepida Masakiyo et S. Shimada sp. nov.

机译：日本水域中Ulva（Ulvophyceae，Chlorophyta）属的物种多样性，特别参考的是ep铁皮棉Masakiyo等人。十一月

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摘要

In order to understand the exact species diversity of Japanese Ulva and Umbraulva (Ulvophyceae, Chlorophyta), nrITS2 region was sequenced from 164 specimens of Ulva and Umbraulva collected in Japanese waters from deep seawater around 30 m depth, coastal areas, brackish water to freshwater. Phylogenetic analysis revealed that Japanese Ulva fall into 29 distinct clades that composed of 17 known species and 12 species possessing novel sequences. Japanese Umbraulva was classified into four species, two of which possessed novel sequences. Ulva sp. 5 was morphologically similar to Ulva clathratioides Kraft et al. in gross morphology and number of pyrenoids in cells, and there was only 1 bp difference between them. Ulva sp. 12 had membranous thalli with rhizoids extending the outside on the cell layer in the basal portion, a characteristic reported only from Ulva sublittoralis Segawa. Ulva tepida Masakiyo et S.Shimada sp. nov. (Ulva sp. 3) is characterized by tube-like thalli with simple or radial branching in the basal region, chloroplasts covering the outer wall of cells and having 1-5 pyrenoids (one, 15.6%; two, 54.1%; three, 25.9%; four, 3.7%; and five, 0.7%) in the middle region.
机译：为了了解日本Ulva和Umbraulva（Ulvophyceae，Chlorophyta）的确切物种多样性，从在日本水域中采集的164个Ulva和Umbraulva标本中的30个深度约30 m的深海水，沿海地区，咸水到淡水中对nrITS2区进行了测序。系统发育分析表明，日本Ulva分为29个不同的进化枝，由17个已知物种和12个具有新序列的物种组成。日本雨伞被分为四个物种，其中两个具有新的序列。 Ulva sp。 5在形态上与Ulva clathratioides Kraft等相似。在细胞的总体形态和类胡萝卜素的数量上，它们之间仅相差1 bp。 Ulva sp。 12个具有膜状的拟南芥，在基部的细胞层上向外延伸有根状根，仅Ulva sublittoralis Segawa报道过。 Ulva tepida Masakiyo等人，S.Shimada sp。十一月（Ulva sp。3）的特征是在底部区域具有简单或放射状分支的管状拟南芥，叶绿体覆盖了细胞的外壁，并具有1-5个类胡萝卜素（1个，15.6％； 2个，54.1％； 3个，25.9％） ％；四个（3.7％；五个，0.7％）。

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