GYANOPHAGE ~ * Cyanophages was first described by "safferman and Morris in 1963' ~ * cyanophages are classified within the bacteriophages families Myoviridae. cyanophages cire viruses that infect cyanobacteria also known as "Cyanophyta (en) "Blue-green alage" cyanobacteria are a phylum of bacteria that obtain their energy through the process of photosynthesis Although cyanobacteria metabolize photo auto trophically like Eukaryotic plants, they prokaryotic cell structure * cyanophages can be found in both fresh water and marine enviornments. ~ * Marine and fresh water cyanophages have foos -ashedral heads, which contains double standed DNA attached to a tail by connector proteins * The size of the head and tail vary among Species of cyanophages. * These blooms can pose adanges to humans and other animal particularly in eutrophic fresh watu lake. * Infection by these viruses is highly prevalent in cells belonging to Synechococcus spp * where up to 5% of cells. belonging to marine Cyanobacterial cells have been reported to contain mature phage particles. * cyanobacteria blooms in fresh water and masine ecosystems. * Cyanophages - elia. intect a wide range of cyanobact ACTINOPHAGE * Actino bacteriophages are virus that infect bacteria in the phylum Actinobacteria. * Actinobacteriopncompass a large group of gram - positive bacteria found both terrestially and aquatically and are promanent components of soil microbes. ~ * The phages of streptomyces are called actinophages one actinophage may attack more than one species. poly valent. * Actinophages through their advantageous specifity to species, genesa. and Families. more than 17,000 actino bacteriophages have been described and over 3,000 completa genome sequences * their genomec diversity DNA sequences. * Their genome diversity is driven by the highly dyanamic interaction blw phages and their hosts Group of virus which attacks on actino -myters. *They mostly undergo tytic cycle They contain as DNA as it is genetic materia * They have isometric head and non concentrat tail. Head is 800 A° diameter and Tail is 2800% long * Tail is 45-50° these group of phages attack micro monaspore * micro monospore purpulia; Streptamycas species. Actino phages 517 intects Streptomycas gracies.