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Autospores are a type of spores that are produced by algae to enable asexual reproduction and spread. They are non-motile and non-flagellated aplanospores
Autospore
Genus of algae
morphology (spherical, three-dimensional colonies and reproduction by autospores). However, molecular phylogenetic studies have shown that the type species
Actinastrum
Unit of reproduction adapted for dispersal and survival in unfavorable conditions
Autospores of a strain of Jenufa aeroterrestrica
Spore
Genus of green algae
surrounded by grains of starch. Reproduction occurs by the formation of autospores; zoospores or gametes are not known to be produced in Chlorella. In autosporulation
Chlorella
Genus of algae
pyrenoid. Marthea reproduces asexually by autospores. Four autospores form from one protoplast. Unusually, the autospores show amoeboid movement for some time
Marthea
Phylum of green algae
chlorophytes, both unicellular groups can reproduce asexually through autospores, wall-less zoospores, fragmentation, plain cell division, and exceptionally
Chlorophyta
Genus of algae
starch grains. Reproduction is asexual and occurs by the formation of 4-32 autospores; these are released by the rupture of the parental cell wall. Species
Lobosphaera
Genus of algae
different autospore morphologies is characteristic for Elliptochloris. However, some strains (for example SAG 2200) only produce one type of autospores, and
Elliptochloris
Family of algae
placed within the Chlorellaceae, because of autospore formation. However, the genus produces autospores within an enlarged cell wall, similar to Pediastrum
Hydrodictyaceae
Class of fungi
base. In contrast to other taxa in their phylum, some reproduce using autospores, although many do so through zoospores. Oogamous sexual reproduction may
Monoblepharidomycetes
Genus of algae
reddish color. Enallax reproduces asexually via the formation of autospores. The autospores form into the shape of a colony while in the mother cell, and
Enallax
Genus of algae
chloroplasts with pyrenoids. Asexual reproduction occurs by the formation of autospores, which arrange themselves into the shape of the colony. Sexual reproduction
Pectodictyon
Genus of algae
Reproduction in Sphaerocystis occurs by the formation of autospores or zoospores. Autospores are formed in twos, fours, or eights and are released by
Sphaerocystis
Genus of algae
Reproduction occurs asexually via the formation of autospores, arranged into coenobia. The autospores are released by the rupture of the parent cell wall
Didymogenes
Genus of algae
pyrenoids. Asexual reproduction occurs via the formation of autospores. Two or four autospores are produced per cell, which are released when the mother
Palmodictyon
Genus of algae
wall. Watanabea reproduces asexually by autospores; a cell may form one of two different types of autospores, either E-form (ellipsoidal, smaller and
Watanabea
Phylum of alveolates
Chromera autospores are 5–7 μm in diameter. They asexually reproduce through binary division to develop autosporangia, which in turn harbor 2–4 autospores under
Chrompodellid
Genus of algae
in Antarctica. Reproduction in Trebouxia is mediated by autospores and zoospores. Autospores are non-motile spores that have the same shape as their parent
Trebouxia
Division of algae
inheriting a single cyanelle. Species of Glaucocystis reproduce via non-motile autospores. To date, there is no evidence of sexual reproduction in glaucophytes
Glaucophyte
Genus of algae
starch sheath (or no pyrenoid at all). Reproduction occurs asexually by autospores. It is similar to and often confused with the related genus Ankistrodesmus
Monoraphidium
Family of algae
sexually. Asexual reproduction occurs by the formation of autospores, or zoospores. In autospore formation, 4 to 16 daughter cells are produced per mother
Bracteamorpha
Family of algae
family. Members of the family can reproduce either asexually by use of an autospore, or sexually by fertilization of an egg by sperm. They form colonies which
Dictyosphaeriaceae
Genus of algae
Asexual reproduction occurs by the formation of autospores. Four, eight or 16 (rarely two) autospores are produced per cell; they are released via the
Coenocystis
Family of algae
characteristic of the genus. Reproduction occurs by the formation of autospores. Guiry, M.D. & Guiry, G.M. "Family: Sphaerodictyaceae taxonomy browser"
Sphaerodictyaceae
Family of algae
pyrenoid. Reproduction occurs exclusively asexually by the formation of autospores. However, molecular phylogenetic studies have found that some genera placed
Botryococcaceae
Genus of algae
always lacks a pyrenoid. Dictyochloropsis is asexual and reproduces using autospores. Previously, many species of the morphologically similar genus Symbiochloris
Dictyochloropsis
Genus of algae
chloroplasts with pyrenoids. Reproduction occurs by the formation of autospores. Guiry, M.D.; Guiry, G.M. "Pseudobohlina". AlgaeBase. University of Galway
Pseudobohlina
Genus of algae
pyrenoid. Radiococcus reproduces asexually via the formation of autospores. Four to eight autospores are produced per sporangium; they are released when the mother
Radiococcus
Genus of algae
elliptical pyrenoid sheathed in grains of starch. Reproduction occurs through autospores. It is found in freshwater habitats, or soil. Krienitz, Lothar; Hegewald
Parachlorella
Genus of algae
with a starch sheath. Tetraedron reproduces asexually by autospores; two, four, or eight autospores are formed in the mother cell and are released by rupture
Tetraedron
Genus of algae
zoospores, while Planktosphaeria was characterized by reproduction via autospores only. The phycologist Richard C. Starr redefined Planktosphaeria to include
Planktosphaeria
Genus of algae
nuclei). Asexual reproduction occurs by the formation of zoospores or autospores. Guiry, M.D.; Guiry, G.M. "Pseudodictyochloris". AlgaeBase. University
Pseudodictyochloris
Genus of algae
Asexual reproduction typically occurs through the formation of autospores; four autospores are produced per cell. One species is known to produce zoospsores
Treubaria
Genus of algae
mucilage. Gilbertsmithia grandis reproduces asexually by the formation of autospores. Each cell divides into four or eight protoplasts, and a released via
Gilbertsmithia
Genus of algae
been overlooked. Coelastrella reproduces asexually by the formation of autospores, which are released by a tear in the mother cell wall. Coelastrella has
Coelastrella
Genus of algae
two contractile vacuoles. Asexual reproduction in this genus occurs by autospores or zoospores or by the fragmentation of the colonies. Zoospores have two
Palmellopsis
Class of green algae
sexually. In asexual reproduction, cells may produce autospores, aplanospores or zoospores. Autospores (by definition) lack flagella and appear as smaller
Chlorophyceae
Genus of algae
Dimorphococcus reproduces asexually via autospores, with four spores produced per mother cell. Autospores are released through a lateral tear in the
Dimorphococcus
Species of alga
parental cell wall. Cells are ellipsoid, and reproduce by four (rarely two) autospores; larger colonies may have multiple groups of cells each bounded by their
Glaucocystis_nostochinearum
Genus of algae
are formed from the mother cell wall after autospore release. Mychonastes reproduces asexually via autospores. Usually 2 or 4 (sometimes up to 64) are produced
Mychonastes
Genus of green algae
cleaved into uninucleate daughter cells, usually developing as non-motile autospores. These daughter cells typically link up with other daughter cells to form
Scenedesmus
Family of algae
into multiple biflagellate zoospores, or less commonly, aplanospores or autospores. Reports of sexual reproduction have not been confirmed. As of February 2022[update]
Actinochloridaceae
Genus of algae
via the formation of four or eight (occasionally 16) spherical to ovoid autospores; they are released when the mother cell wall gelatinizes. Sexual reproduction
Eutetramorus
Genus of algae
reproduction occurs by the formation of typically four (rarely 2 or 8) autospores per cell; these are released through a tear in the mother cell wal. Guiry
Amphikrikos
Genus of algae
with a single pyrenoid. Asexual reproduction occurs via the formation of autospores; two to eight (sometimes 16) are formed per cell. Daughter cells are released
Gloeocystis
Family of algae
family. Cells multiply by simple vegetative division, sometimes by forming autospores, but not zoospores. The genus Paradoxia produces zoospores; its placement
Coccomyxaceae
Genus of algae
difficult to observe. Asexual reproduction occurs by the formation of autospores, which are organized into coenobia; they enlarge with the cell wall, which
Willea
Genus of algae
occurs asexually by the formation of autospores. The protoplast divides into two, four, eight or 16 autospores, while the parent cell walls gelatinize
Botryococcus
Genus of algae
pyrenoids. Asexual reproduction occurs via the formation of four or eight autospores arranged in tetrads, which are released when the mother cell wall gelatinizes
Coenococcus
Genus of algae
or two) pyrenoids). Reproduction occurs asexually by the formation of autospores, with each cell forming up to four coenobia. Sexual reproduction or zoospores
Dicloster
Genus of basal green algae
surrounding the cells. Chlorokybus reproduces asexually by forming autospores. The autospores can also differentiate into zoospores, which have two flagella
Chlorokybus
Genus of algae
a pyrenoid. Asexual reproduction occurs by the formation of autospores; four autospores are produced within the mother cell, and are released through
Crucigenia
Genus of algae
containing a single pyrenoid. Asexual reproduction occurs by the formation of autospores arranged into coenobia; they are released by the gelatinization of the
Dicellula
Genus of algae
with one pyrenoids. Coelastropsis reproduces asexually by producing autospores, where each spore develops into a cell of the new coenobium. Flagellated
Coelastropsis
Class of algae
reproduction occurs exclusively asexual, and occurs via the formation of autospores or zoospores. Sexual reproduction is rare in the class, with reports from
Trebouxiophyceae
Species of algae
dumbbell-shaped. Reproduction occurs by the formation of two to eight (rarely 16) autospores which are released via the rupture of the parental cell wall. Auxenochlorella
Auxenochlorella protothecoides
Auxenochlorella_protothecoides
Genus of algae
chloroplasts. Asexual reproduction occurs by the formation of two, four or eight autospores which are released by the rupture of the parental cell wall. Sexual reproduction
Oocystis
Species of alga
visible in young cells or cultures. Reproduction occurs by the formation of autospores, typically two (sometimes four) per cell. Botryococcus braunii has been
Botryococcus_braunii
Family of algae
reproduce asexually, exclusively by autospores. A distinguishing characteristic of this family is the method of autospore formation: the protoplast divides
Selenastraceae
Genus of algae
color especially when old. Pseudomuriella reproduces asexually, mainly by autospores, but sometimes by aplanospores or biflagellated zoospores as well. Morphologically
Pseudomuriella
Family of algae
into 2-64 zoospores, each with two flagella. Less often, aplanospores or autospores are formed. Sexual reproduction has been observed, but is rare. The taxonomy
Characiochloridaceae
Genus of algae
series. Reproduction occurs asexually by the formation of two to eight autospores, which form in a series and are released through the rupture of the parental
Closteriopsis
Genus of algae
chloroplast with no pyrenoids. Asexual reproduction occurs by the formation of autospores, which organize into the form of new coenobia but arranged perpendicularly
Makinoella
Family of algae
chloroplasts with or without pyrenoids. Cells reproduce by producing autospores, never by zoospores or hemizoospores. Algae in the Radiococcaceae are
Radiococcaceae
Genus of algae
chloroplast with one pyrenoid. Chlorococcum reproduces by the formation of autospores or zoospores. The zoospores have two flagella of equal length. Chlorococcum
Chlorococcum
Genus of algae
It differs from Pseudochlorothecium in that it does not reproduce via autospores, only via zoospores. Within Deuterocharacium, two species are known, D
Deuterocharacium
Species of algae
covered by two starch grains. Reproduction occurs by the formation of autospores (two to four per sporangium), which are released from a tear in the parental
Mucidosphaerium_pulchellum
Genus of algae
other members of the family, Selenastrum reproduces asexually, by forming autospores. Zoospores and sexual reproduction have not been observed in this genus
Selenastrum
Species of alga
reproduction occurs by the formation of four or eight (sometimes 16) autospores, which are released by the rupture of the parent cell wall. Guiry, M.D
Symbiochloris_reticulata
Genus of algae
sexual reproduction is unknown in Ankistrodesmus. It exclusively forms autospores, and does not appear to have a flagellated stage in its life cycle. Some
Ankistrodesmus
Genus of algae
electron microscope. Desmodesmus typically reproduces asexually by forming autospores. Sexual reproduction has been observed a few times. Species in the genus
Desmodesmus
Genus of algae
cup-shaped, lacking a pyrenoid. Poloidion reproduces mainly by producing two autospores; it may also produce zoospores with two flagella. Guiry, M.D. & Guiry
Poloidion
Genus of algae
to three pyrenoids. Asexual reproduction occurs via the formation of autospores; two to four are produced per sporangium and these are released through
Eremosphaera
Genus of algae
asexually by the formation of biflagellate zoospores, aplanospores, or autospores. T. aeria T. aggregata T. aplanospora T. compacta T. diplobionticoidea
Tetracystis
Genus of algae
microscopy. Tetrastrum reproduces asexually through the formation of autospores. Four autospores are formed, organized into the shape of the colony; these are
Tetrastrum
Genus of algae
pyrenoid. Asexual reproduction occurs by the formation of two, four or eight autospores which form inside the mother cell wall. Distinguishing features of species
Franceia
Species of red algae
first and then the nucleus afterwards. The daughter cells are called autospores and divide into cell numbers 2 to 4 to 8. Sano, S.; Ueda, M.; Kitajima
Galdieria_partita
Genus of algae
Reproduction occurs exclusively asexually, via the formation of two or four autospores (per sporangium) arranged into coenobia. The coenobia are released through
Tetrachlorella
Family of algae
layers. Reproduction occurs asexually and via the production of multiple autospores. The daughter cells often remain in the expanded mother cell wall. Traditionally
Oocystaceae
Genus of algae
with one pyrenoid. Reproduction occurs asexually. It exclusively forms autospores, and does not appear to have a flagellated stage in its life cycle. Similar
Nephrocytium
Species of alga
cell and lacks a pyrenoid. It reproduces by forming two, four or eight autospores. There is interest in using M. neglectum for the production of biofuels
Monoraphidium_neglectum
Family of algae
family was circumscribed based on the mode of reproduction (production of autospores), and the family was defined around the type genus Chlorella, which is
Chlorellaceae
Species of green alga
containing a unique bilobed chloroplast, and reproduces both through autospores and rod-shaped spores. Though originally discovered as a photobiont within
Elliptochloris_bilobata
Genus of algae
algae in the family Selenastraceae, reproduction occurs exclusively via autospores. Podohedriella was circumscribed by the phycologist František Hindák in
Podohedriella
Genus of algae
Schroederiella reproduces asexually via the formation of autospores. Four or eight autospores are organized into the shape of a coenobium; they are released
Schroederiella
Genus of algae
to Planktosphaeria, a genus that is traditionally defined as producing autospores instead of zoospores. Additionally, species matching the morphological
Follicularia
Genus of algae
cells, asexual reproduction can also produce zoospores, which may act as autospores ranging from two to eight per cell. When living conditions become less
Tetraspora
Genus of algae
observe under the light microscope. Raphidocelis reproduces asexually by autospores; zoospores and sexual reproduction have not been observed in this genus
Raphidocelis
Genus of green algae
reproduces asexually with the mother cells each producing two, four, or eight autospores which then again propagate inside the mother cells, forming large grandmother
Elongatocystis
Genus of algae
chloroplast, each with a pyrenoid. Neodesmus reproduces asexually by forming autospores; two spores are produced per cell. Sexual reproduction or flagellated
Neodesmus
Genus of algae
without staining. Asexual reproduction occurs through the formation of autospores (two to four per sporangium and arranged tetrahedrally), which are then
Schizochlamydella
Genus of algae
in its center. Tetrallantos reproduces asexually by the formation of autospores. In each cell, four (sometimes two or eight) spores are formed per sporangium
Tetrallantos
Genus of algae
asexually. Reproduction occurs by the formation of 2 or 4 (sometimes up to 8) autospores. Coccomyxa has a worldwide distribution, and are able to form biofilms
Coccomyxa
Genus of algae
recognize the two genera as being distinct. Kirchneriella reproduces by autospores, which are arranged serially within the mother cell. They are released
Kirchneriella
Genus of algae
chloroplast. Asexual reproduction occurs by the formation of two or four autospores arranged into one or two coenobia. The coenobia are released by the partial
Didymocystis
Genus of algae
Chloroplasts lack pyrenoids. Reproduction occurs asexually by the formation of autospores; in field conditions, usually two are produced per cell, but in culture
Choricystis
Genus of algae
have or lack a pyrenoid. Asexual reproduction occurs by the formation of autospores or zoospores; sexual reproduction has not been observed. Species of Trochiscia
Trochiscia
Genus of algae
via the formation of autospores (usually four per cell), which are released from by a rupture in the parental cell wall. Autospores generally remain attached
Micractinium
Genus of algae
in rare cases, the algae can produce 2 to 8 self-replicating spores (autospores). They also noted that zoospores are unique in their appearance, lacking
Asterochloris
Genus of algae
uninucleate cells (i.e. with a single nucleus at maturity), only produces autospores and not zoospores, and has a rough outer sporopollenin layer. Guiry, M
Chlorotetraedron
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