Research
| Title： | Three novel species of coccoid green algae within the Watanabea clade (Trebouxiophyceae, Chlorophyta) |
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| First author： | Song, Huiyin; Hu, Yuxin; Zhu, Huan; Wang, Qinghua; Liu, Guoxiang; Hu, Zhengyu |
| Journal： | INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY |
| Years： | 2016 |
| DOI： | 10.1099/ijsem.0.001542 |
| Abstract： | Coccoid green algae are extremely diverse despite their simple coccoid phenotype, a phenotype that may be the result of convergent evolution. In this study, we used a polyphasic approach combining molecular phylogenetic analyses, morphology and ultrastructure to investigate isolated coccoid strains from China, and our results reveal three new lineages of Trebouxiophyceae: the novel genus and species Mysteriochloris nanningensis gen. et sp. nov., and the two novel species Phyllosiphon coccidium sp. nov. and Desertella yichangensis sp. nov. (Trebouxiophyceae, Chlorophyta). We provide a detailed characterization of the novel microalgae which they are autosporic coccoid unicells and have parietal chloroplasts. In phylogenies based on 18S rDNA sequences and the chloroplast ribulose-bisphosphate carboxylase gene (rbcL), these three algae are nested within the Watanabea clade and are different from any known algae. M. nanningensis FACHB-1787 is not really close to any known algae within the Watanabea clade. Phyllosiphoncoccidium FACHB-2212 is within the Phyllosiphon lineages. D. yichangensis FACHB-1793 is closely related to Desertella californica and described as a representative of a novel species of the genus Desertella. |
