澄清混淆——三氏原原甲菌J.Schiller和红原甲菌Bursa(原原甲目恐龙科)是两个不同的物种

IF 2 4区 生物学 Q2 MARINE & FRESHWATER BIOLOGY
U. Tillmann, A. Beran, M. Gottschling, Stephan Wietkamp, M. Hoppenrath
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引用次数: 3

摘要

原中央属(proorocentrales)是一种独特的恐龙植物群,具有多种非胚性特征,但在该群内的物种划分具有挑战性。早在1918年,约瑟夫·席勒(Josef Schiller)就将其描述为来自的里雅斯特(地中海、亚得里亚海)的重要开花物种,具有明显的不对称轮廓和小而不对称的近根尖棘。这个名字下的所有后续记录都不符合席勒最初的描述。这些不一致源于John Dodge在1975年对原心种的修订,他将原心种redfieldii(一种更对称、细长、有长顶脊的种)归为triestinum下的同义词。为了澄清这一混淆,我们在的里雅斯特的P. triestum的类型地点收集了样本,并建立了一个在形态上与原始物种一致的菌株,适合用于典型鉴定。将该菌株的形态和rRNA序列数据与来自地中海和北大西洋的4个新菌株进行了比较。三estiinum的细胞在侧面具有不对称的轮廓和一个小的,背-根下棘。这些特征,很容易在光学显微镜下分辨出来,与红田弓形虫几乎对称和细长的细胞不同,红田弓形虫有一个长而尖的脊柱。尽管如此,这两种仍是近亲,并且具有相同的鞭毛周围区域结构,具有独特的、很大程度上减少的附属孔和非常小的血小板。这种不对称明显地将这两个种与原心草的其他种区分开来。这两个物种的主要rRNA序列不同,ITS和LSU序列的差异将使它们在未来的元条形码研究中得到区分。本研究结果表明,三estium P.和redfieldii P.是不同的物种,有助于对原中央植物的生物多样性进行可靠的评估。本文首次从红地弓形虫中分离出三estium proorocentrum。澄清了重要开花物种的特性。描述了鞭毛周围区域的结构细节。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Clarifying confusion – Prorocentrum triestinum J.Schiller and Prorocentrum redfieldii Bursa (Prorocentrales, Dinophyceae) are two different species
ABSTRACT The Prorocentrales are a unique group of dinophytes based on several apomorphic traits, but species delimitation is challenging within the group. Prorocentrum triestinum was described by Josef Schiller in 1918 as an important bloom-forming species from Trieste (Mediterranean, Adriatic Sea) with a conspicuous asymmetric outline and a small, asymmetrically located subapical spine. All subsequent records under this name fail to conform to Schiller’s original description. These inconsistencies have their origin in John Dodge’s 1975 revision of Prorocentrum, which placed Prorocentrum redfieldii, a more symmetrical, slender species with a long apical spine, into synonymy under P. triestinum. To clarify this confusion, we collected samples at the type locality of P. triestinum in Trieste and established a strain that is morphologically consistent with the protologue and suitable for use in epitypification. Morphology and rRNA sequence data of this strain were compared with four new strains identified as P. redfieldii from the Mediterranean Sea and the North Atlantic Ocean. Cells of P. triestinum had an asymmetric outline in lateral view and a small, dorso-subapical spine. These features, which are readily resolved by light microscopy, were distinct from those of the nearly symmetrical and slender cells of P. redfieldii, which had a long, apically located spine. The species are nevertheless closely related and share an identical architecture of the periflagellar area with a distinctive, largely reduced accessory pore together with a very small platelet 7. This apomorphy clearly differentiates both species from other species of Prorocentrum. Both species differ in their primary rRNA sequences, and ITS and LSU sequence differences will enable them to be distinguished in future meta-barcoding studies. The present study demonstrates that P. triestinum and P. redfieldii are distinct species and thus contributes to a reliable biodiversity assessment of Prorocentrum. HIGHLIGHTS Prorocentrum triestinum is characterised molecularly for the first time and delimited from P. redfieldii. The identity of important bloom-forming species is clarified. Structural details of the periflagellar area are described.
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来源期刊
European Journal of Phycology
European Journal of Phycology 生物-海洋与淡水生物学
CiteScore
4.80
自引率
4.20%
发文量
37
审稿时长
>12 weeks
期刊介绍: The European Journal of Phycology is an important focus for the activities of algal researchers all over the world. The Editors-in-Chief are assisted by an international team of Associate Editors who are experts in the following fields: macroalgal ecology, microalgal ecology, physiology and biochemistry, cell biology, molecular biology, macroalgal and microalgal systematics, applied phycology and biotechnology. The European Journal of Phycology publishes papers on all aspects of algae, including cyanobacteria. Articles may be in the form of primary research papers and reviews of topical subjects. The journal publishes high quality research and is well cited, with a consistently good Impact Factor.
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