Klebsormidium sp.
Klebsormidium sp.: https://marylandbiodiversity.com/species/23064
Synonyms
Tags

Map Snapshot

0 Records

Status

Klebsormidium is a microscopic green alga. Microscopy is necessary for identification.

Description

Klebsormidium forms unbranched filaments of cylindrical cells. Its chloroplast is roughly saddle-shaped and positioned at the edge of the cell; it may occupy nearly the entire periphery or only a small portion. Species of Klebsormidium could be confused with Ulothrix, Microspora, or Cylindrocapsa.

Where To Find

Klebsormidium is a frequent but minor component of many freshwater algal communities. It may sometimes be found in abundance in pools, seeps and certain terrestrial habitats.

Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Source: Wikipedia

Klebsormidium
Scientific classification Edit this classification
Clade: Viridiplantae
(unranked): Charophyta
Class: Klebsormidiophyceae
Order: Klebsormidiales
Family: Klebsormidiaceae
Genus: Klebsormidium
P.C.Silva, Mattox & W.H.Blackwell[1][2]
Type species
Klebsormidium flaccidum
P.C.Silva, Mattox & W.H.Blackwell[1]
Species

See species list.

Klebsormidium bilatum

Klebsormidium is a genus of filamentous charophyte green algae comprising 20 species.[1] The name was proposed in 1972 to resolve confusion in application and status of Hormidium[Note 1] and was given for the German botanist Georg Albrecht Klebs.[Note 2]

The algae occurs mostly in soil and on moist substrates, nevertheless, aquatic and one marine species are also known. Many Klebsormidium-species are able to synthesize substances for UV protection, the so-called mycosporine-like amino acids. The draft genome sequence of Klebsormidium nitens NIES-2285 (called K. flaccidum at the time of publication) was published in 2014.[3]

Description

[edit]

Klebsormidium forms uniseriate (one cell thick), unbranched filaments. Cells are cylindrical or barrel-shaped. The cell wall may be thin or thickened, and is sometimes made of H-shaped pieces. Each cell contains a single parietal chloroplast which encircles around 40 to 70% of the cell wall, usually with a single pyrenoid.[4]

Klebsormidium reproduces asexually but not sexually. It produces zoospores with two flagella, which are released from cells through a pore. It can also produce aplanospores and akinetes.[4]

The genus can be difficult to distinguish from Ulothrix, but Ulothrix tends to have chloroplasts that are wider and encircling nearly all of the cell.[4]

Species

[edit]

The valid species currently considered to belong to this genus are:

The species of Klebsormidium are in critical need of a taxonomic revision. Traditional morphological characteristics used to delimit the taxa, such as the width of filaments or shape of cells, are unreliable and do not map well to phylogenetic groups.[5]

Notes

[edit]
  1. ^ Hormidium nitens G.A.Klebs 1896
  2. ^ Georg Albrecht Klebs (1857-1918) Dinophyceae, Chrysophyceae and Xanthophyceae specialist

References

[edit]
  1. ^ a b c Guiry, M.D.; Guiry, G.M. (2008). "Klebsormidium". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2011-01-17.
  2. ^ Silva, P.C.; Mattox, K.R.; Blackwell, W.H. Jr (1972). "The generic name Hormidium as applied to green algae". Taxon. 21 (5/6): 639–645. doi:10.2307/1219167. JSTOR 1219167.
  3. ^ Hori, Koichi; et al. (2014). "Klebsormidium flaccidum genome reveals primary factors for plant terrestrial adaptation". Nature Communications. 5: 3978. Bibcode:2014NatCo...5.3978H. doi:10.1038/ncomms4978. PMC 4052687. PMID 24865297.
  4. ^ a b c John, David M.; Rindi, Fabio (2014). "Chapter 8. Filamentous (Nonconjugating) and Plantlike Green Algae". In Wehr, John D.; Sheath, Robert G.; Kociolek, J. Patrick (eds.). Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc. ISBN 978-0-12-385876-4.
  5. ^ Rindi, Fabio; Guiry, Michael D.; López-Bautista, Juan M. (2008). "Distribution, Morphology, and Phylogeny Of Klebsormidium (Klebsormidiales, Charophyceae) in Urban Environments in Europe". Journal of Phycology. 44 (6): 1529–1540. doi:10.1111/j.1529-8817.2008.00593.x. PMID 27039867. S2CID 30622039.
[edit]