ISSN:
1574-6968
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract The distribution of plasmid DNA has been studied in 23 strains and variants of non-heterocystous filamentous cyanobacteria that are susceptible to infection by the LPP-1 cyanophage (archetype). 21 have identical plasmid profiles and contain 3 plasmids of Mrs 0.9, 10 and approx. 12 · 106 respectively. In one strain, Plectonema FS180, the plasmids have been designated pMP1, pMP2, and pMP3, respectively. pMP1 shows sequence homology with pMP2 and pMP3 but not with DNA from an LPP-type cyanophage. Plectonema UTEX 598 lacks the small plasmid only, while Plectonema UTEX 1541 is distinct amongst all these strains with 3 plasmids of Mrs 3, 10, and 〉 30 · 106, respectively. The findings support the view that the majority of these strains may be independent isolates of a single species.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1574-6968.1984.tb01333.x
