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新种，（金藻纲）属的一个新物种。

 sp. nov., a new species of the genus (Chrysophyceae).

作者信息

Hao Jun-Xue, An Ya-Lu, Nan Fang-Ru, Lv Jun-Ping, Liu Qi, Liu Xu-Dong, Xie Shu-Lian, Feng Jia

机构信息

School of Life Science, Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China Shanxi University Taiyuan China.

出版信息

PhytoKeys. 2025 Jul 28;260:115-138. doi: 10.3897/phytokeys.260.154552. eCollection 2025.

DOI:10.3897/phytokeys.260.154552
PMID:40765899
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12322679/
Abstract

The genus , belonging to the family Dinobryaceae, has been documented to have only sporadic occurrences in freshwater habitats. However, the species diversity of this genus remains largely unexplored due to the scarcity of available molecular sequences. This limitation has significantly hindered a comprehensive understanding of both the species diversity and evolutionary relationships of the genus . In this study, a new species was described from Shanxi Province, China, based on detailed morphological observations and phylogenetic analyses. This species was characterized by a tube-like lorica, a spindle protoplast, two heterokont flagella, and oval or elliptic scales. In addition, phylogenetic analysis based on multi-genes (SSU, LSU, and L) indicated that strain SX231009 was closely related to . Given its distinct morphological characteristics and independent phylogenetic position, we propose the designation of this strain as a new species, The results of this study significantly expand the known diversity of the genus and provide valuable insights into the regional biodiversity and evolutionary history of freshwater chrysophytes.

摘要

该属属于黄群藻科，据记载在淡水生境中仅偶尔出现。然而，由于可用分子序列稀缺，该属的物种多样性在很大程度上仍未得到探索。这一限制严重阻碍了对该属物种多样性和进化关系的全面理解。在本研究中，基于详细的形态学观察和系统发育分析，从中国山西省描述了一个新物种。该物种的特征是具有管状的兜甲、纺锤形的原生质体、两条不等长鞭毛以及椭圆形或椭圆状鳞片。此外，基于多基因（小亚基核糖体RNA、大亚基核糖体RNA和L）的系统发育分析表明，菌株SX231009与 密切相关。鉴于其独特的形态特征和独立的系统发育位置，我们提议将该菌株命名为一个新物种， 本研究结果显著扩展了该属已知的多样性，并为淡水金藻的区域生物多样性和进化历史提供了有价值的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/7c5eefe04c58/phytokeys-260-115_article-154552__-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/339ed1a7ac22/phytokeys-260-115_article-154552__-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/62a56581e237/phytokeys-260-115_article-154552__-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/94615573cd2c/phytokeys-260-115_article-154552__-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/8a7cddd1acc0/phytokeys-260-115_article-154552__-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/633c517b2c3b/phytokeys-260-115_article-154552__-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/5c036aed61d6/phytokeys-260-115_article-154552__-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/45bf267883a4/phytokeys-260-115_article-154552__-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/cef75dcd99b1/phytokeys-260-115_article-154552__-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/1e880a028bc3/phytokeys-260-115_article-154552__-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/7c5eefe04c58/phytokeys-260-115_article-154552__-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/339ed1a7ac22/phytokeys-260-115_article-154552__-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/62a56581e237/phytokeys-260-115_article-154552__-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/94615573cd2c/phytokeys-260-115_article-154552__-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/8a7cddd1acc0/phytokeys-260-115_article-154552__-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/633c517b2c3b/phytokeys-260-115_article-154552__-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/5c036aed61d6/phytokeys-260-115_article-154552__-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/45bf267883a4/phytokeys-260-115_article-154552__-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/cef75dcd99b1/phytokeys-260-115_article-154552__-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/1e880a028bc3/phytokeys-260-115_article-154552__-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4e0b/12322679/7c5eefe04c58/phytokeys-260-115_article-154552__-g010.jpg

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