Anabaena genera

The reduced species (arsenite) is more toxic than the oxidized species (arsenate) since it may react with sulfhydryl groups of cysteine in structure and enzyme proteins. Therefore oxidation of arsenite in (micro)organisms is an important protective mechanism which is described for various species of the genus Pseudomonas, Xantho-monas and Achromobacter. However, some bacteria are able to reduce arsenate to the more toxic form arsenite. This process is described for some strains of Pseudomonas fluorescens and Anabaena oscillaroides (Cullen and Reimer, 1989). 

Sivonen K, Namikoshi M, Evans WR, Carmichael WW, Sun R, Rouhiainen L, Luukkainen R. Rinehart KL. Isolation and chatacteriiation of a variety of microcystins from seven strains of the cyarmbacterial genus Anabaena. Appl Environ Microbiol 1992 58 2495-2500. 

These algae and especially those of the genus Nostoc and the genus Anabaena, fix nitrogen, but rather slowly. The fixation is inhibited by ammonia and nitrates and is not quantitatively important in soils. 

Form genus I. Anabaena Form genus II. Anabaenopsis Form genus III. Aphanizomenon... 

Anatoxin-a(s) is a natural oiganophosphate analogue produced by cyanobacteria in the genus Anabaena (Molica et al., 2005 Patocka et al., 2011). The "(s)" in the name "anatoxin-a(s)" refers to salivation, which is a characteristic sign of poisoning observed in laboratory rodents after exposure (Mahmood and Carmichael, 1986 Carmichael et al., 1990). 

VNase was identified in a freshwater cyanobacterium of the genus Anabaena, but it is not yet certain that they occur in marine organisms (Rehder, 2000). A complete study detailing aU aspects of the biochemistry of vanadium was published more recently (Crans et al, 2004). 

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