Spore differentiation in relation to certain antibiotics in the blue‐green alga Nodularia spumigena MERTENS

Abstract

Induction of spore differentiation is achieved within three days in Nodularia spumigena by incubating the cultures a t 35 "C in the light. Morphologically detectable sporulation and spore germination could not occur in the presence of chloramphenicol, streptomycin and penicillin. But chloramphenicol-supplemented cultures developed prominent cyanophycin granules. Synthesis of these granules seems to be a non-ribosomal phenomenon.

Reduction of cyanobacterial toxins through coprophagy in Mytilus edulis

“…In seven vials the in vivo Chl aconcentration was stable throughout the incubation period. N. spumigena is known to produce resting cells (Pandey, 1988), and we suggest that pseudofaeces might be where the production of resting cells is initiated in natural environments. This could have large consequences for the fate of HAB blooms.…”

Microbial production of natural poly amino acid

“…Based on the characters of cyanobacteria discussed above, several strategies have been reported to enhance the synthesis and accumulation of cyanophycin, such as deprivation of sulfur [56,57] or phosphorus [51,58] and the addition of translatable or transcriptional inhibitors [50,[59][60][61] . The accumulation of this polymer increases with the addition of a variety of nitrogen-containing compounds to the medium, such as ammonium, urea, glycine, aspartic acid, and arginine [62,63] .…”

Occurrence, functions and biosynthesis of polyamides in microorganisms and biotechnological production

“…Various different laboratory conditions have been reported to promote the synthesis and accumulation of cyanophycin: the addition of translational or transcriptional inhibitors (Rodriguez-Lopez et al 1971;Simon 1973b;Lawry and Simon 1982;Pandey and Talpasayi 1982;Allen and Hawley 1983), and deprivation of sulfur Ariño et al 1995) or phosphorus (Lawry and Simon 1982;Stephan et al 2000). Depending on the species, the polymer also accumulates following the addition of a variety of nitrogen-containing compounds to the medium [i.e.…”