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Issue: Vol. 626 No. 3: 23 Nov. 2023
Type: Article
Published: 2023-11-23
DOI: 10.11646/phytotaxa.626.3.4
Page range: 181-190
Abstract views: 136
PDF downloaded: 11

Obliquicauda longipens sp. nov. and Obliquicauda xianninga sp. nov.: two new species of foliicolous algae from China

Yangtze River Basin Ecological Environment Monitoring and Scientific Research Center; Yangtze River Basin Ecological Environment Supervision and Administration Bureau; Ministry of Ecological Environment; Wuhan 430010; China; Department of Transdisciplinary Science and Engineering; Tokyo Institute of Technology; Tokyo 152-8550; Japan
Yangtze River Basin Ecological Environment Monitoring and Scientific Research Center; Yangtze River Basin Ecological Environment Supervision and Administration Bureau; Ministry of Ecological Environment; Wuhan 430010; China
Yangtze River Basin Ecological Environment Monitoring and Scientific Research Center; Yangtze River Basin Ecological Environment Supervision and Administration Bureau; Ministry of Ecological Environment; Wuhan 430010; China
Key Laboratory of Algal Biology; Institute of Hydrobiology; Chinese Academy of Sciences; Wuhan 430072; China
Key Laboratory of Algal Biology; Institute of Hydrobiology; Chinese Academy of Sciences; Wuhan 430072; China
Foliicolous algae Fusiform Obliquicauda Phylogenetic analysis Stalk Algae

Abstract

Obliquicauda belongs to the Choricystis/Botryococcus clade (Trebouxiophyceae, Chlorophyta). The establishment of this genus was predicated on phylogenetic analyses and the distinctive morphology characteristics, slightly asymmetrical and fusiform vegetative cells with a tail-like stalk tilting to one side. Two different pure cultured Obliquicauda-like strains obtained from a living Ficus pumila L. leaf were deeply investigated in this study. Based on the significant morphological differences (cell length, width, L:W ratio, and stalk length), the results of phylogenetic analyses relying on 18S and rbcL markers, and the genetic distances of the 18S and rbcL genes, these two strains were conclusively identified as novel additions to Obliquicauda, O. longipens sp. nov., and O. xianninga sp. nov.

 

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