井冈山大学学报（自然科学版）2026，Vol.47Issue(5)：48-54,7.DOI:10.3969/j.issn.1674-8085.2026.05.006
链带藻属(绿藻门)一个潜在的新分类单元:基于形态学特征的证据
A potential new taxon of Desmodesmus(Chlorophyta):Evidence from morphological characteristics
摘要
Abstract
A strain of scenedesmoid green algae characterized by long,arc-shaped spines was isolated from a fishpond in the Chishui Alsophila National Nature Reserve,Guizhou Province,China.Its morphological characteristics are incongruent with all currently documented species within the genus Desmodesmus,warranting its provisional designation as Desmodesmus sp.The strain exhibits similarities to closely related species such as D.denticulatus and D.denticulatus var.fenestratus in cell morphology(elongate-elliptical to ovoid or broad-ovoid),colonial arrangement(alternating cells),and spine positioning(on both poles of terminal cells and at one end of inner cells).However,it is distinctly differentiated by a combination of unique features:long arc-shaped spines that are comparable to or slightly longer than the cell diameter;a specific arrangement,where inner cells bear only two long arc-shaped spines at a single pole,curving in nearly opposite directions within the coenobial plane;and the presence of a solitary spine on the free face of terminal cells.These collective characteristics suggest that the strain represents a potential novel taxon within Desmodesmus.Although the current lack of molecular phylogenetic evidence precludes a formal description,the detailed morphological documentation provided in this study establishes a critical diagnostic foundation and essential basis for future taxonomic research.关键词
链带藻属/形态学/新分类单元/赤水/中国Key words
Desmodesmus/morphology/new taxon/Chishui/China分类
农业科技引用本文复制引用
潘鸿,向刚,唐宇宏,冉妍,张鑫桐,梁盛,何琴琴..链带藻属(绿藻门)一个潜在的新分类单元:基于形态学特征的证据[J].井冈山大学学报（自然科学版）,2026,47(5):48-54,7.基金项目
赤水桫椤国家级自然保护区综合科学考察项目(P52000020240003M5) （P52000020240003M5）
