Trachydiscus guangdongensis sp. nov., a new member of Eustigmatophyceae (Stramenopiles) isolated from China: morphology, phylogeny, fatty acid profile, pigment, and cell wall composition

The microalgal strain, JNU5, was isolated downriver from the Hengshishui River of the Guangdong Province, China. The morphology of JNU5 revealed that it was a spherical, unicellular organism with a smooth cell wall. The cell contained a large vacuole and prominent, reddish globule. The pigment composition revealed that chlorophyll a was the only chlorophyll, and violaxanthin was the predominant carotenoid along with vaucheriaxanthin-ester and...