Nostocaceae

Nostocaceae
Nostocaceae
Anabaena spiroides
Scientific classification
Kingdom: Bacteria
Phylum: Cyanobacteria
Class: see [1]
Order: Nostocales
Family: Nostocaceae
Genera

Anabaena
Anabaenopsis
Aphanizomenon
Aulosira
Cylindrospermopsis
Cylindrospermum
Loefgrenia
Nodularia
Nostoc
Wollea

The Nostocaceae is a family of cyanobacteria that forms filament-shaped colonies enclosed in mucus or a gelatinous sheath. Some genera in this family are found primarily in fresh water (such as Nostoc), while others are found primarily in salt water (such as Nodularia). Other genera (e.g. Anabaena) may be found in both fresh and salt water.

Like other cyanobacteria, these bacteria sometimes contain photosynthetic pigments in their cytoplasm to perform photosynthesis. The particular pigments they contain gives the cells a bluish-green color.

Species of the Nostocaceae are particularly known for their nitrogen fixing abilities, and they form symbiotic relationships with certain plants, such as the mosquito fern, cycads, and hornworts. The cyanobacteria provides nitrogen to its host. Certain species of Anabaena have been used on rice paddy fields. Mosquito ferns carrying the cyanobacteria grow on the water in the fields during the growing season. They and the nitrogen they contain are then plowed into the soil following the harvest, which has proved to be an effective natural fertilizer.

The family Nostocaceae belongs to the order Nostocales. Members of the family can be distinguished from those in other families by their (1) unbranched filaments of cells arranged end-to-end, and (2) development of heterocysts among the cells of the filaments.

Sources

  • Bold, Harold C., Alexopoulos, Constantine J., & Delevoryas, Theodore. (1987). Morphology of Plants and Fungi (5th ed.). New York: Harper & Row. ISBN 0-06-040839-1.
  • Drouet, Francis. (1973). Revision of the Nostocaceae with Cylindrical Trichomes (formerly Scytonemataceae and Rivulariaceae). New York: Hafner Press. ISBN 0028440609
  • Drouet, Francis. (1981). Revision of the Stigonemataceae with a Summary of the Classification of the Blue-green Algae. Vaduz: J. Cramer. Nova Hedwigia: Heft 66.

External links


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Look at other dictionaries:

  • Nostocaceae — prop. n. A natural family of blue green algae. Syn: family {Nostocaceae}. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • Nostocaceae — noun blue green algae • Syn: ↑family Nostocaceae • Hypernyms: ↑bacteria family • Member Holonyms: ↑class Cyanobacteria, ↑Cyanophyceae, ↑class Cyanophyceae …   Useful english dictionary

  • nostocaceae — nos·to·ca·ce·ae …   English syllables

  • family Nostocaceae — noun blue green algae • Syn: ↑Nostocaceae • Hypernyms: ↑bacteria family • Member Holonyms: ↑class Cyanobacteria, ↑Cyanophyceae, ↑class Cyanophyceae …   Useful english dictionary

  • Ностоковые — (Nostocaceae или Nostoceae) семейство в отделе водорослей дробянок (см.) …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

  • genus Nostoc — noun type genus of the family Nostocaceae: freshwater blue green algae • Hypernyms: ↑bacteria genus • Member Holonyms: ↑Nostocaceae, ↑family Nostocaceae • Member Meronyms: ↑nostoc …   Useful english dictionary

  • Nostoc — Photo of N. azollae Scientific classification Kingdom: Bacteria …   Wikipedia

  • Nostoc — commune Systematik Domäne: Bakterien (Bacteria) Abteilung: Cyanobakterien (Cyanobacter …   Deutsch Wikipedia

  • Nostoc azollae — Nostoc Nostoc commune Systematik Domäne: Bakterien (Bacteria) Abteilung …   Deutsch Wikipedia

  • Nostoc commune — Nostoc Nostoc commune Systematik Domäne: Bakterien (Bacteria) Abteilung …   Deutsch Wikipedia

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