文章标题中国居群chrysophyte Urostipulosphaeraarticulata (chrysophyaceae, Ochromonadales)的新记录。

IF 1 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION
Biodiversity Data Journal Pub Date : 2025-06-12 eCollection Date: 2025-01-01 DOI:10.3897/BDJ.13.e150900
Yalu An, Junxue Hao, Fangru Nan, Junping Lv, Qi Liu, Xudong Liu, Shulian Xie, Jia Feng
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引用次数: 0

摘要

背景:Urostipulosphera属成立于2019年。其形态特征与泌尿腺属和泌尿腺属相似,但又有所不同。该属通过二叉分支结构将单个细胞连接到群落中,这将其与Uroglena和Uroglenopsis区分开来。虽然该属有9种,但只有4种的分子数据可用。目前我国严重缺乏泌尿系的分子资料和物种分布记录。在欧洲和北美的一些地方记录了本属的物种。新信息:基于形态特征和分子系统发育分析,我们鉴定了在中国山西省发现的三个样本。基于SSU、rbcL和ITS序列的多基因系统进化树分析结果表明,3份样本均与来自捷克的Urostipulosphaeraarticulata U5-5聚类,支持率为100/1.00。形态学观察进一步支持了这一结果。因此,这3份样品被鉴定为Urostipulosphaeraarticulata。这是国内首次报道,丰富了该物种的地理多样性。此外,在扫描电镜下,我们还发现了带有雌性鞭毛的长鞭毛,补充了该物种的形态特征描述。不同于U5-5的Urostipulosphaeraarticulata的ITS2二级结构为环状和五臂结构。贝叶斯松弛时钟分析表明,Urostipulosphaera属起源于早白垩世,约1.0985亿年前(Ma),并在79.81 Ma左右分化为两个分支。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New records of the colonial chrysophyte Urostipulosphaeraarticulata (Chrysophyceae, Ochromonadales) in China.

Background: The genus Urostipulosphera was established in 2019. Its morphological characteristics are similar to Uroglena and Uroglenopsis, but it differs from both. This genus connects individual cells into communities through a dichotomous branching structure, which distinguishes it from Uroglena and Uroglenopsis. Although there are nine species in this genus, molecular data are available for only four species. Molecular data and species distribution records for Urostipulosphaera are severely lacking. Species of this genus have been recorded in a few locations in Europe and North America.

New information: We identified three samples that were discovered in Shanxi Province, China, based on morphological characteristics and molecular phylogenetic analysis. Results of the polygenic phylogenetic tree, based on SSU, rbcL and ITS sequences, showed that the three samples were clustered with Urostipulosphaeraarticulata U5-5 from Czechia, with a high support rate of 100/1.00. Morphological observations further supported this result. Therefore, the three samples were identified as Urostipulosphaeraarticulata. This is the first report in China and enriches the geographic diversity of this species. Moreover, we found the long flagellum with mastigonemes under the scanning electron microscope complementing the description of the morphological characteristics of this species. The ITS2 secondary structure of the specimens differed from that of Urostipulosphaeraarticulata U5-5, which exhibited a loop and five-arm structure. A Bayesian relaxed clock analysis indicated that the genus Urostipulosphaera originated in the Early Cretaceous, approximately 109.85 million years ago (Ma) and diverged into two clades around 79.81 Ma.

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来源期刊
Biodiversity Data Journal
Biodiversity Data Journal Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
2.20
自引率
7.70%
发文量
283
审稿时长
6 weeks
期刊介绍: Biodiversity Data Journal (BDJ) is a community peer-reviewed, open-access, comprehensive online platform, designed to accelerate publishing, dissemination and sharing of biodiversity-related data of any kind. All structural elements of the articles – text, morphological descriptions, occurrences, data tables, etc. – will be treated and stored as DATA, in accordance with the Data Publishing Policies and Guidelines of Pensoft Publishers. The journal will publish papers in biodiversity science containing taxonomic, floristic/faunistic, morphological, genomic, phylogenetic, ecological or environmental data on any taxon of any geological age from any part of the world with no lower or upper limit to manuscript size.
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