Coronacoccus hengyangensis gen. et sp. nov., a new member of Chlorellaceae (Trebouxiophyceae, Chlorophyta) with radiococcacean morphology

• DOI: 10.2216/17-65.1
• Publication Date: 2018-05-08T12:49:49Z
• Authors: Huiyin Song; Xudong Liu; Yuxin Hu; Qinghua Wang; Jijian Long; Guoxiang Liu; Zhengyu Hu
• Keywords: Lineage (genetic)

:The Chlorellaceae is a family in the order Chlorellales that includes mostly coccoid algae of minute sizes, and portion this was separated into two sister groups (the Chlorella clade Parachlorella clade) according to molecular phylogenetic analyses. To date, comprises 11 genera exhibit range morphological variation. In study, we discovered from China strain marked as FACHB-2137; use polyphasic approach, including analyses SSU+ITS rDNA, an ITS2/CBC (compensatory base changes) light microscopy transmission electron microscopy, characterise strain. Molecular revealed nested within (Chlorellaceae, Trebouxiophyceae), forming independent lineage other genera. The new strain's morphology has characteristic autospores release by rupturing or splitting cell wall several (two four) portions; differs members mother remains rather distinct, daughter cells remain cup-shaped colonial mucilage for extended period. Morphologically, closely resembles Radiococcaceae. This indicates inferring family-level relationships based exclusively on can be problematic. We describe alga genus species, Coronacoccus hengyangensis gen. et sp. nov. morphotype described first time clade.