中国丝状蓝藻的一个新记录种——乌克兰细点丝藻  

A new record of a filamentous cyanobacterial species in China:Oculatella ucrainica Oxana Vinogradova & Tatiana Mikhailyuk

作　　者：王捷 张婷 魏爱丽[1,2] 王清华 史佳琪 王中杰 Wang Jie;Zhang Ting;Wei Aili;Wang Qinghua;Shi Jiaqi;Wang Zhongjie(College of Biological Science and Technology,Taiyuan Normal University,Jinzhong,Shanxi 030619,China;Shanxi Key Laboratory of Earth Surface Processes and Resource Ecology Security in Fenhe River Basin,Taiyuan Normal University,Jinzhong,Shanxi 030619,China;Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China)

机构地区：[1]太原师范学院生物科学与技术学院,山西晋中030619 [2]太原师范学院汾河流域地表过程与资源生态安全山西省重点实验室,山西晋中030619 [3]中国科学院武汉植物园,武汉430074

出　　处：《植物科学学报》2025年第1期1-10,共10页Plant Science Journal

基　　金：国家自然科学基金项目(32000167);山西省“1331工程”重点创新团队建设计划项目(TD201718)。

摘　　要：乌克兰细点丝藻(Oculatella ucrainica Oxana Vinogradova&Tatiana Mikhailyuk)是2017年从土壤结皮与海岸边分离出来并描述为新种的耐旱陆生物种。本研究从我国山西省太原师范学院校园的潮湿土壤和贵州省花溪公园的湿润墙面分离出两株丝状蓝藻,形态上与乌克兰细点丝藻相似,均在丝状体顶端细胞中含有橘色颗粒;16S rRNA基因序列显示,这两株蓝藻与乌克兰细点丝藻的相似性均在99%以上,且在系统发育树中聚为一支,有较高的自展值。此外,这两株丝状蓝藻的ITS二级结构与乌克兰细点丝藻差异较小,进一步表明它们均属于乌克兰细点丝藻,这是我国首次报道乌克兰细点丝藻新记录种。A newly recorded drought-tolerant terrestrial cyanobacterium,Oculatella ucrainica Oxana Vinogradova & Tatiana Mikhailyuk,originally isolated from soil crusts and coastal areas in 2017,is reported in China for the first time.In this study,two filamentous cyanobacteria were isolated from moist soil at Taiyuan Normal University,Shanxi Province,and damp walls in Huaxi Park,Guizhou Province.These strains displayed morphological similarities to O.ucrainica,both featuring orange spots on the apical cells of their trichomes.Phylogenetic analysis based on 16S rRNA gene sequences demonstrated high similarity(above99%) between the two isolates and O.ucrainica,with both strains clustering on a single branch with high bootstrap support.Furthermore,the secondary structure of these cyanobacteria closely resembled that of O.ucrainica,further corroborating their identification as members of this species.This study represents the first report of O.ucrainica in China.

关 键 词：乌克兰细点丝藻 丝状蓝藻 新记录种 系统发育 分类 

分 类 号：Q949.22[生物学—植物学]