Environmental Engineering Reference
In-Depth Information
SCYTONEMA VARIUM
KUTZING, 1849
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Nostocales
Family: Scytonemataceae
Distribution: Paciic Islands
Habitat: Freshwater and brackish water habitats
Description: The ilaments of this species may be branched and form mats. The
trichomes are isopolar, cylindrical, and uniseriate. The heterocysts are solitary.
Compounds and activities: The bioactive compounds, viz., scytovirin and cya-
novirin N, isolated from this species have shown inhibitory effects on HIV
protein (Bokesh et al., 2003). Scytovirin has also displayed potent anticyto-
pathic activity against laboratory strains and primary isolates of HIV-1 by
interacting with oligosaccharides containing α1-2 and α1-6 tetramannose
units of envelope glycoproteins, gp 120, gp 160, and gp 41.
LYNGBYA LAGERHEIMEII
(GOM.) ANAGN. ET. KOM
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Oscillatoriales
Family: Oscillatoriaceae
Distribution: Europe
Habitat: Shallow waters
Description: The ilaments of this species are without heterocysts.
Compounds and activities: The crude extract of this species has yielded HIV
inhibitors that protect human lymphoblastoid T cells from the cytopathic
effects of HIV infection (Singh et al., 2005).
