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日本佐贺市菱形藻属（绿藻门，绿藻纲）的新种和物种多样性。

New species and species diversity of Desmodesmus (Chlorophyceae, Chlorophyta) in Saga City, Japan.

机构信息

Faculty of Agriculture, College of Natural Sciences, Institute of Education and Research, Saga University, 1 Honjo, Saga, 840-8502, Japan.

出版信息

Sci Rep. 2024 Aug 16;14(1):18980. doi: 10.1038/s41598-024-69941-z.

DOI:10.1038/s41598-024-69941-z
PMID:39152251
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11329507/
Abstract

Desmodesmus spp. are one of the most dominant components of phytoplankton, which are present in most water bodies. However, identification of the species based only on morphological data is challenging. The aim of the present study was to provide a comprehensive understanding of the actual distribution of the Desmodesmus species in Saga City, Saga Prefecture, Japan. In the present study, 38 water bodies were surveyed between June 2017 and March 2023. A total of 86 culture strains were established from the samples collected from the 21 sites, and identified by molecular phylogenetic analysis, comparison of ITS2 rRNA secondary structures, and observation of surface microstructure. In total, four new species, including D. notatus Demura sp. nov., D. lamellatus Demura sp. nov., D. fragilis Demura sp. nov., and D. reticulatus Demura sp. nov. were proposed and 17 Desmodesmus species were identified as described species. The present study revealed > 20 Desmodesmus species, exhibiting high genetic diversity in a small area.

摘要

杜氏藻属（Desmodesmus spp.）是浮游植物中最主要的组成部分之一，存在于大多数水体中。然而，仅基于形态学数据对物种进行鉴定具有挑战性。本研究旨在全面了解日本佐贺市杜氏藻属物种的实际分布情况。本研究于 2017 年 6 月至 2023 年 3 月期间对 38 个水体进行了调查。从 21 个采样点采集的样本中建立了 86 个培养株，并通过分子系统发育分析、ITS2 rRNA 二级结构比较和表面微观结构观察进行了鉴定。共提出了四个新种，包括杜氏藻属（Desmodesmus）的 notatus Demura sp. nov.、lamellatus Demura sp. nov.、fragilis Demura sp. nov. 和 reticulatus Demura sp. nov.，并鉴定出 17 种描述种的 Desmodesmus 物种。本研究揭示了在一个小区域内存在超过 20 种具有高度遗传多样性的杜氏藻属物种。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/7989c19dd0bb/41598_2024_69941_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/29fdb4ef56d2/41598_2024_69941_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/3d5b7516ed12/41598_2024_69941_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/cc8c3972bb2b/41598_2024_69941_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/7989c19dd0bb/41598_2024_69941_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/29fdb4ef56d2/41598_2024_69941_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/279cb807292f/41598_2024_69941_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/3668396a645f/41598_2024_69941_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/b16663854836/41598_2024_69941_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/3d5b7516ed12/41598_2024_69941_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/cc8c3972bb2b/41598_2024_69941_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8ebb/11329507/7989c19dd0bb/41598_2024_69941_Fig7_HTML.jpg

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