Planochloris Komárek, 1979: 240
Classification:
Empire Eukaryota
Kingdom Plantae
Phylum Chlorophyta
Class Chlorophyceae
Order Chlamydomonadales
Family Sphaerocystidaceae
Holotype species: Planochloris pyrenoidifera (Korshikov) J.Komárek
Taxonomic status: currently recognized as a distinct genus.
Description: Colonies up to 70 x 40 &m comprised of four to seven parallel rows of cells embedded in thin, colorless mucilage and forming a flat, monostromatic sheet. Cells spherical, 5-7 &m diameter with thin cell walls and without contractile vacuoles. Cells uninucleate; chloroplast single, parietal, and cup-shaped, occupying about 2/3 of cell wall; pyrenoid single with starch sheath. Asexual reproduction by autospores and zoospores with 2 (rarely 4) formed per mother cell. Zoospores biflagellate with two contractile vacuoles and stigma, quickly becoming vegetative and developing colony. Planochloris in freshwater, isolated from swamps; reported from Portugal and former USSR.Genus also assigned to Palmellaceae, subfamily Hormotiloideae along with Parallela, Heleococcus, Hormotila and Hormotilopsis or in Chlorococcaceae. Ultrastructural studies required to resolve taxonomic position.
NCBI Nucleotide Sequences
Numbers of names and species: There is only one species or infraspecific name in the database at present, which has been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
Planochloris pyrenoidifera (Korshikov) J.Komárek C - type
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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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: http://www.algaebase.org/search/genus/detail/?genus_id=47437
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 May 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:5418
