Desmidiales, commonly called the desmids (Gr.desmos, bond or chain), are an order in the Charophyta, a division of green algae in which the land plants (Embryophyta) emerged.[2] Desmids consist of single-celled (sometimes filamentous or colonial) microscopic green algae. Because desmids are highly symmetrical, attractive, and come in a diversity of forms, they are popular subjects for microscopists, both amateur and professional.[3]
The desmids belong to the class Zygnematophyceae. Although they are sometimes grouped together as a single family Desmidiaceae,[4] most classifications recognize three to five families, usually within their own order, Desmidiales.[5]
The Desmidiales comprise around 40 genera and 5,000[6] to 6,000[7] species, found mostly but not exclusively in fresh water. In general, desmids prefer acidic waters (pH between 4.8 and 7.0), so many species may be found in the fissures between patches of sphagnum moss in marshes.[3] As desmids are sensitive to changes in their environments, they are useful as bioindicators for water and habitat quality.[8]
^Cite error: The named reference AlgaeBase was invoked but never defined (see the help page).
^Gontcharov AA, Marin BA, Melkonian MA (January 2003). "Molecular phylogeny of conjugating green algae (Zygnemophyceae, Streptophyta) inferred from SSU rDNA sequence comparisons". J. Mol. Evol. 56 (1): 89–104. Bibcode:2003JMolE..56...89G. doi:10.1007/s00239-002-2383-4. PMID 12569426. S2CID 35734083.
^ abPrescott, G. W. (1948). "Desmids". Botanical Review. 14 (10): 644–676. doi:10.1007/BF02861551. JSTOR 4353406.
^Kanetsuna, Y. (2002). "New and interesting desmids (Zygnematales, Chlorophyceae) collected from Asia". Phycological Research. 50 (2): 101–113. doi:10.1046/j.1440-1835.2002.00263.x. S2CID 85054464.
^Cite error: The named reference Brook 2010 was invoked but never defined (see the help page).
^Van den Hoek, C., D. G. Mann, & H. M. Jahns, 1995. Algae:An Introduction to Phycology, page 468. (Cambridge: Cambridge University Press). ISBN 0-521-30419-9
^Brook, Alan J., 1981. The Biology of Desmids, page 1. (Berkeley: University of California Press). ISBN 0-520-04281-6
^Coesel, Peter F.M. (2001). "The significance of desmids as indicators of the trophic status of freshwaters". Biodiversity & Conservation. 10: 177–187.
recognize three to five families, usually within their own order, Desmidiales. The Desmidiales comprise around 40 genera and 5,000 to 6,000 species, found mostly...
Order Zygnematales (filamentous conjugates and saccoderm desmids) Order Desmidiales (placoderm desmids) Class Coleochaetophyceae (coleochaetophytes) Order...
orders, the Zygnematales and Desmidiales. However, the Zygnematales were found to be paraphyletic with respect to the Desmidiales, and so it was split up....
and Spirotaenia) previously assigned to Mesotaeniaceae as well as the Desmidiales actually emerged in the Zygnematacae. Guiry, Michael D. (2013). "Taxonomy...
Zygnematales, and Spirotaenia, a basal green algae. Additionally, the Desmidiales appear to have emerged deep within the Zygnematales, and are also conjugating...
Micrasterias is a unicellular green alga of the order Desmidiales. Its species vary in size reaching up to hundreds of microns. Micrasterias displays...
Order Zygnematales (filamentous conjugates and saccoderm desmids) Order Desmidiales (placoderm desmids) Class Coleochaetophyceae (coleochaetophytes) Order...
star-shaped in Zygnema, or may follow the shape of half the cell in order Desmidiales. In some algae, the chloroplast takes up most of the cell, with pockets...
division Chlorophyta, or in the division Charophyta (e.g., Chlorokybales, Desmidiales). According to Komárek & Fott (1983): Chlorococcaceae (Chlorococcoideae...
Gonatozygaceae are one of four families of Charophyte green algae in the order Desmidiales (desmids). As of February 2022[update], AlgaeBase accepted two genera:...
Coleochaetales Order Spirogloeales Order Zygnematales Order Mesotaeniales Order Desmidiales Order Leiosporocerotales Order Anthocerotales Order Notothyladales Order...
Desmidiaceae are one of four families of charophyte green algae in the order Desmidiales (desmids). Genera accepted by AlgaeBase as of February 2022[update] were:...
the Bangweulu region (Zambia). 1. Genera Micrasterias and Allorgeia (Desmidiales)". Plant Ecology and Evolution. 147 (3): 392–404. doi:10.5091/plecevo...
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