Actinomycetes growing in high saline environments represent an important source of biologically active compounds. Many antibacterial, antifungal, anti-tumour, cytotoxic and photo protective compounds have been isolated from these areas. Marine and mangrove actinomycetes can be a source of drugs with novel chemistry and promising potential. Since marine and mangrove areas are closely related to each other, here I consolidated the research work done by the other researchers related to this area only.... Mehr