Morphology and molecular phylogeny of Gomphonemopsis sieminskae sp. nov. isolated from brackish waters of the East China Sea coast

Q2 Agricultural and Biological Sciences

Plant and Fungal Systematics Pub Date : 2019-07-01 DOI:10.2478/pfs-2019-0003

M. Krzywda, R. Gastineau, M. Bąk, Przemysław Dąbek, E. Górecka, Zhou Cheng-xu, H. LANGE-BERTALOT, Chun L. Li, A. Witkowski

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引用次数: 1

Abstract

Abstract We describe the new species Gomphonemopsis sieminskae from brackish waters of the East China Sea littoral near Ningbo, China. Two diatom strains isolated from Ulva sp. were successfully grown, then analyzed by light (LM) and scanning electron (SEM) microscopy. The new species is compared to known Gomphonemopsis species, and similarities to G. pseudoexigua and G. obscurum are emphasized. Although the size metric data overlap and the external views are fairly similar, the two taxa differ in their valve interior. Molecular barcoding strongly discriminated G. sieminskae from G. cf. exigua, while rbcL gene-based phylogeny showed G. sieminskae to be sister to Phaeodactylum tricornutum. In this respect our results confirm the recent discovery, based on molecular data, that Gomphonemopsis is a close-relative taxon to Phaeodactylum, and place it in Phaeodactylaceae instead of Rhoicospheniaceae as inferred solely from morphology.

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中国东海沿岸半咸淡水Gomphonemopsis sieminskae sp. 11 .的形态和分子系统发育

摘要本文报道了东海宁波近岸半咸淡水Gomphonemopsis sieminskae新种。对从Ulva sp.分离的两株硅藻进行了成功培养，并用光镜(LM)和扫描电子显微镜(SEM)进行了分析。将新种与已知Gomphonemopsis种进行了比较，并强调了其与G. pseudoexigua和G. obscurum的相似性。虽然大小度量数据重叠且外部视图相当相似，但两个分类群的阀内部不同。基于rbcL基因的系统发育表明，G. sieminskae与G. cf. exigua是姊妹种。在这方面，我们的结果证实了最近基于分子数据的发现，即Gomphonemopsis是phaeodactyaceae的近亲分类单元，并将其置于Phaeodactylaceae中，而不是仅从形态学推断的Rhoicospheniaceae。

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来源期刊

Plant and Fungal Systematics Agricultural and Biological Sciences-Plant Science

CiteScore

2.40

自引率

0.00%

发文量