A new freshwater species Achnanthes licunese sp. nov. (Achnanthaceae, Bacillariophyta) from pebbles of Licun River, Shandong Province, China

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-05-16 DOI:10.11646/phytotaxa.649.1.4

WEI CHEN, PAN YU, GAOFEI SONG, REDIAT ABATE

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Abstract

A new freshwater diatom species, Achnanthes licunese sp. nov., was found on pebble samples collected from Licun River in Shandong Province, China. The various taxonomic characteristics of Achnanthes licunese sp. nov. is observed under light and scanning electron microscope. The living cells of A. licunese sp. nov. possesses two chloroplasts. Its valves exhibit a linear to linear-lanceolate outline, slightly constricted in the middle part, with uniseriate striae. The central area of the raphid valves is expanded into a linear and thickened stauros, and the raphe is filiform. On the araphid valves, there is no central area, and the axial area (sternum) is located in the valve margin. The valve of the A. licunese sp. nov. possesses the marginal spines, but no marginal ridge and terminal orbiculi. By comparing the new species with similar Achnanthes species, A. licunese sp. nov. was confirmed to be sufficiently different regarding valve size, striae density, and the presence of marginal spines. The discovery of this species increases the diversity of freshwater diatoms.

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中国山东省李村河卵石中的淡水新种 Achnanthes licunese sp.

在中国山东省李村河采集的卵石样品中发现了一个新的淡水硅藻物种Achnanthes licunese sp.nov.。在光镜和扫描电镜下观察了Achnanthes licunese sp.A. licunese sp. nov.的活细胞具有两个叶绿体。它的裂爿呈线形或线状披针形，中间部分略有缢缩，有单列条纹。鳞片状裂爿的中央部位膨大成线状，并有加厚的柱头，裂爿呈丝状。在石花菜瓣膜上，没有中央区，轴区（胸骨）位于瓣膜边缘。licunese sp. nov.的瓣膜具有边缘刺，但没有边缘脊和末端眼轮。通过将该新种与类似的 Achnanthes 物种进行比较，证实 A. licunese sp.该物种的发现增加了淡水硅藻的多样性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.