Sanguina Leya, Procházková & Nedbalová, 2019

Holotype species: Sanguina nivaloides Procházková, Leya & Nedbalová

Original publication and holotype designation: Procházková, L., Leya, T., Krizková, H. & Nedbalová, L. (2019). Sanguina nivaloides and Sanguina aurantia gen. et spp. nov. (Chlorophyta): the taxonomy, phylogeny, biogeography and ecology of two newly recognised algae causing red and orange snow. FEMS Microbiology Ecology 95: [1-21, Supplementary material] , 9 figs, 2 tables.

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Description: Cysts (it is unresolved whether these are of asexual or sexual origin) are spherical, contain one nucleus, a central chloroplast with one naked pyrenoid, and abundant peripheral lipid globules containing red-coloured carotenoids. According to the maturity of cysts and their astaxanthin to chlorophyll-a ratios, cysts can appear in different colour shades as orange-peel orange or blood red. As the secondary carotenoids are stored in lipid globules of different sizes the cytoplasm can appear speckled to homogeneous. The surface of the cysts can appear smooth, with blunt (nipples, papillae) or sharp (nibs) protrusions. In mature cysts, carotenoids mask other cell organelles beyond recognition. In young cysts a single parietal chloroplast is clearly visible. At the light microscopy level one cell wall layer can be distinguished in mature cysts and two layers in young cysts. The outermost layer in young cysts is most probably the primary cell wall, which later is shed during cyst maturation exposing the developing secondary cell wall. Vegetative stages are unknown, and no culturable strains exist.The genus is restricted in its habitat to snowfields and glacier-based snowfields in polar and alpine regions.

Origin of description: this description is from the original publication; it may have been modified slightly. The most recent alteration to this page was made on 2019-07-03 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=52702

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 03 July 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024