# Microspora
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{{Short description|Genus of green algae}}
{{about|a genus of green algae|the parasitic fungus|Microsporidia}}
{{Automatic taxobox
| taxon = Microspora
| authority = [Thuret](/source/Gustave_Thuret), 1850
|image=Microsporaceae.jpg
|image_alt=A, Microspora amœna (Kütz.) Lagerh. B and C, ? M. abbreviata (Rabenh.) Lagerh.; B, vegetative filament; C, filament with aplanospores (a). D, M. pachyderma (Wille) Lagerh. E, single vegetative cell of M. amœna var. crassior Hansg., showing the reticulated chloroplast. The indistinct blur in the centre of the cell indicates the position of the nucleus. F, fragment of filament of M. amœna with aplanospore (a).
|image_caption=A, ''[Microspora amœna](/source/Microspora_am%C5%93na)'' ([Kütz.](/source/Friedrich_Traugott_K%C3%BCtzing)) [Lagerh.](/source/Lagerh.) B and C, ? ''[M. abbreviata](/source/Microspora_abbreviata)'' ([Rabenh.](/source/Gottlob_Ludwig_Rabenhorst)) Lagerh.; B, vegetative filament; C, filament with [aplanospore](/source/aplanospore)s (a). D, ''[M. pachyderma](/source/Microspora_pachyderma)'' ([Wille](/source/Nordal_Wille)) Lagerh. E, single vegetative cell of ''[M. amœna var. crassior](/source/Microspora_am%C5%93na_var._crassior)'' [Hansg.](/source/Hansg.), showing the reticulated [chloroplast](/source/chloroplast). The indistinct blur in the centre of the cell indicates the position of the [nucleus](/source/Cell_nucleus). F, fragment of filament of ''M. amœna'' with aplanospore (a).
| type_species = Microspora floccosa
| type_species_authority = (Vaucher) Thuret[{{AlgaeBase genus | id=37533 | title=''Microspora'' Thuret, 1850, nom. cons. | access-date=2025-04-26 }}]
| subdivision_ranks = Species
| subdivision =
* ''[Microspora stagnorum](/source/Microspora_stagnorum)''
* ''[Microspora sp. UTEX LB 472](/source/Microspora_sp._UTEX_LB_472)''
}}
'''''Microspora''''' is a [genus](/source/genus) of [green algae](/source/green_algae) in the family [Microsporaceae](/source/Microsporaceae).[See the [NCBI](/source/National_Center_for_Biotechnology_Information) [https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=163316 webpage on Microspora]. Data extracted from the {{cite web | url=https://ftp.ncbi.nih.gov/pub/taxonomy/ | title=NCBI taxonomy resources | publisher=[National Center for Biotechnology Information](/source/National_Center_for_Biotechnology_Information) | access-date=2007-03-19}}] ''Microspora'' was first named by [Gustave Thuret](/source/Gustave_Thuret) in 1850. The name was used by [Arthur Hill Hassall](/source/Arthur_Hill_Hassall) earlier in 1843, for another genus, but Thuret's genus has been [conserved](/source/conserved_name) over Hassall's.[
''Microspora'' is a [freshwater](/source/freshwater) alga, found in still or flowing water. It is most common in the colder months of the year. One species, ''[Microspora ficulinae](/source/Microspora_ficulinae)'', is an [endosymbiont](/source/endosymbiont) within marine [sponge](/source/sponge)s. It has a [cosmopolitan distribution](/source/cosmopolitan_distribution).][{{cite book | title= Gêneros de Algas de Águas Continentais do Brasil: chave para identificação e descrições | edition=2 | year=2006 | first1=Carlos E. M. |last1=Bicudo | first2=Mariângela | last2= Menezes | publisher= RiMa Editora | page=508 | isbn= 85-7656-064-X }}]
==Description==
''Microspora'' consists of uniseriate, unbranched filaments. Cells are cylindrical, quadrate or slightly swollen. The [cell wall](/source/cell_wall) consists of two overlapping, "H-shaped" halves, often visible at the end of filaments where cells have broken off. The cell contains a single, parietal [chloroplast](/source/chloroplast) which is perforated to form a fine or coarse net; the chloroplast has no [pyrenoid](/source/pyrenoid)s.[{{cite book |editor-first1=John D.|editor-last1=Wehr|editor-first2=Robert G.|editor-last2=Sheath|editor-first3=J. Patrick|editor-last3=Kociolek |date= 2014 |edition=2 |title= Freshwater Algae of North America: Ecology and Classification |last1= Shubert|first1=Elliot| last2=Gärtner |first2=Georg |chapter= Chapter 7. Nonmotile Coccoid and Colonial Green Algae |url= |location= |publisher= Elsevier Inc. |page= |isbn=978-0-12-385876-4 }}]
Reproduction occurs asexually and sexually, via biflagellate zoospores or isogametes.[ Aplanospores and akinetes have also been observed.][
Species of ''Microspora'' have traditionally been distinguished based on vegetative characters, such as the width of the filaments. However, these characters are known to be unreliable.][
==Taxonomy==
In [phylogenetic](/source/phylogenetic) analyses, ''Microspora'' forms a clade with ''[Flintia](/source/Flintia)'' (formerly ''Paralella''), but the exact placement within [Chlorophyceae](/source/Chlorophyceae) is somewhat equivocal. No [type material](/source/type_material) exists for ''Microspora''.][{{cite journal|doi=10.7717/peerj.6899|doi-access=free |title=Order, please! Uncertainty in the ordinal-level classification of Chlorophyceae |date=2019 |last1=Fučíková |first1=Karolina |last2=Lewis |first2=Paul O. |last3=Neupane |first3=Suman |last4=Karol |first4=Kenneth G. |last5=Lewis |first5=Louise A. |journal=PeerJ |volume=7 |article-number=e6899 |pmid=31143537 |pmc=6525593 }}]
==References==
{{Reflist|1}}
{{Taxonbar|from=Q291968}}
Category:Sphaeropleales genera
Category:Sphaeropleales
{{Chlorophyceae-stub}}
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Adapted from the Wikipedia article [Microspora](https://en.wikipedia.org/wiki/Microspora) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Microspora?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.