Cyanobacteria
Anabaena sphaerica (Nostocales)
Scientific classification
Kingdom: Bacteria Division: Cyanobacteria Class: Cyanophyceae Order: Nostocales Family: Nostocaceae Genus: Anabaena

Anabaena is a genus of filamentous cyanobacteria, or blue-green algae, found as plankton. It is known for its nitrogen fixing abilities, and they form sybiotic relationships with certain plants, such as the mosquito fern. They are one of four genera of cyanobacteria that produce neurotoxins, which are harmful to local wildlife, as well as farm animals and pets. Anabaena sperica, a filamentous cyanobacterium. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Cyanobacteria (Greek: cyanos = blue) are a phylum of aquatic bacteria that obtain their energy through photosynthesis. ... Cyanobacteria (Greek: cyanos = blue) are a phylum of aquatic bacteria that obtain their energy through photosynthesis. ... See genus (mathematics) for the use of the term in mathematics. ... A filament is a fine, thinly spun thread, fiber, or wire. ... Cyanobacteria (Greek: cyanos = blue) are a phylum of aquatic bacteria that obtain their energy through photosynthesis. ... The algae (singular alga) comprise several different groups of living things that produce energy through photosynthesis. ... Photomontage of plankton organisms Plankton are the weakly swimming but mostly drifting small organisms that inhabit the water column of the ocean, seas, and bodies of freshwater. ... Nitrogen fixation is the process by which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes (such as, notably, ammonia, nitrate and nitrogen dioxide). ... Common Clownfish (Amphiprion ocellaris) in their magnificent sea anemone (Heteractis magnifica) home. ... Species Azolla caroliniana Willd. ... A neurotoxin is a toxin that acts specifically on nerve cells, or neurons, usually by interacting with membrane proteins and ion channels. ...

A DNA sequencing project was undertaken in 1999, which mapped the complete genome of Anabaena, which is 7.2 million base pairs long. The study focussed on heterocysts, which convert nitrogen into ammonia. Certain species of Anabaena have been used on rice paddy fields, proving to be an effective natural fertilizer. Space-filling model of a section of DNA molecule Deoxyribonucleic acid (DNA) or deoxyribose nucleic acid is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and many viruses). ... In genetics and biochemistry, sequencing means to determine the primary structure (or primary sequence) of an unbranched biopolymer. ... 1999 is a common year starting on Friday of the Common Era, and was designated the International Year of Older Persons by the United Nations. ... In biology the genome of an organism is the whole hereditary information of an organism that is encoded in the DNA (or, for some viruses, RNA). ... Heterocysts are specialised nitrogen-fixing cells formed by some filamentous cyanobacteria, such as Nostoc punctiforme and Anabaena sperica, during nitrogen starvation. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... Ammonia is a chemical compound with the formula NH3. ... Species References ITIS 41975 2002-09-22 Rice (genus Oryza) is a plant of the grass family which is a dietary staple of more than half of the worlds human population. ... A rice paddy in Japan A paddy field is a flooded parcel of farmland for growing rice (from the Malaysian word padi, a noun meaning growing rice). Paddy fields are a typical feature of rice-growing countries of East and Southeast Asia, such as China, Thailand, Korea, Japan, Vietnam, Indonesia... Fertilizers are chemicals given to plants with the intention of promoting growth; they are usually applied either via the soil or by foliar spraying. ...

Species

• Anabaena aequalis
• Anabaena affinis
• Anabaena angstumalis
  • Anabaena angstumalis angstumalis
  • Anabaena angstumalis marchica
• Anabaena aphanizomendoides
• Anabaena azollae
• Anabaena bornetiana
• Anabaena catenula
• Anabaena circinalis
• Anabaena confervoides
• Anabaena constricta
• Anabaena cycadeae
• Anabaena cylindrica
• Anabaena echinispora
• Anabaena felisii
• Anabaena flosaquae
  • Anabaena flosaquae flosaquae
  • Anabaena flosaquae minor
  • Anabaena flosaquae treleasei
• Anabaena helicoidea
• Anabaena inaequalis
• Anabaena lapponica
• Anabaena laxa
• Anabaena lemmermannii
• Anabaena levanderi
• Anabaena limnetica
• Anabaena macrospora
  • Anabaena macrospora macrospora
  • Anabaena macrospora robusta
• Anabaena monticulosa
• Anabaena oscillarioides
• Anabaena planctonica
• Anabaena raciborskii
• Anabaena scheremetievi
• Anabaena sphaerica
• Anabaena spiroides
  • Anabaena spiroides crassa
  • Anabaena spiroides spiroides
• Anabaena subcylindrica
• Anabaena torulosa
• Anabaena unispora
• Anabaena variabilis
• Anabaena verrucosa
• Anabaena viguieri
• Anabaena wisconsinense
• Anabaena zierlingii