Bracteacoccus Tereg.

Veselá, Veronika, Malavasi, Veronica & Škaloud, Pavel, 2024, A synopsis of green-algal lichen symbionts with an emphasis on their free-living lifestyle, Phycologia 63 (3), pp. 317-338 : 329

Bracteacoccus Tereg.

This coccoid aero-terrestrial genus can be characterized by multinucleate, round cells that are solitary or form irregular colonies, multiple distinct plate-like plastids without pyrenoids and reproducing by zoospores or aplanospores ( Fig. 18 ; Ettl & Gärtner 2013). Fučíková et al. (2014) place this genus with its 16 accepted species ( Guiry & Guiry 2022) in the Sphaeropleales . Its ability to form lichens (genus Sulzbacheromyces ) was supported by morphological as well as sequence data ( Takeshita et al. 2010; Hodkinson et al. 2014; Masumoto 2020). According to Masumoto (2020), Sulzbacheromyces isolates of Bracteacoccus sp. formed two separate clades that were distinct from free-living taxa.

Figures

Figs 1–18. Lichen photobiont genera (including nonlichenized species) belonging to classes Trebouxiophyceae and Chlorophyceae. Fig. 1. Asterochloris lobophora. Fig. 10. Prasiola crispa. Fig. 2. Myrmecia incisa. Fig. 11. Pseudochlorella pringsheimii. Fig. 3. Trebouxia impressa. Fig. 12. Stichococcus sp. Fig. 4. Vulcanochloris symbiontica. Fig. 13. Auxenochlorella protothecoides. Fig. 5. Chloroidium saccharophilum. Fig. 14. Apatococcus sp. Fig. 6. Jaagichlorella luteoviridis. Fig. 15. Leptosira sp. Fig. 7. Coccomyxa sp. Fig. 16. Symbiochloris tschermakiae. Fig. 8. Elliptochloris subsphaerica. Fig. 17. Uvulifera verrucariae (Lorenz 2016). Fig. 9. Diplosphaera chodatii. Fig. 18. Bracteacoccus. sp. Scale bars: 10 μm (Figs 1-9, 11-18), 200 μm (Fig. 10).