Genetic polymorphism of cyanobacteria under permanent natural stress: A lesson from the "Evolution Canyons"

Volodymyr Dvornyk, Eviatar Nevo

Research output: Contribution to journalShort surveypeer-review


Cyanobacteria have high adaptive potential and occur in the most extreme habitats. The available literature data indicate that the versatility of cyanobacteria is related to their higher polymorphism under stress. The studies of a filamentous cyanobacterium, Nostoc linckia, from the ecological microsite models known as "Evolution Canyons" showed that, among the evolutionary forces maintaining the higher polymorphism and genome diversity under permanent natural stress, the various types of natural selection play a key role.

Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalResearch in Microbiology
Issue number2
StatePublished - Mar 2003

Bibliographical note

Funding Information:
We thank the anonymous reviewer for the helpful comments on the manuscript. This work was supported by the Israeli National Science Foundation (grant 98-04-4963), the Israeli Discount Bank Chair of Evolutionary Biology, the Ancell-Teicher Research Foundation for Genetics and Molecular Evolution, National Health Institute (grant R01 GM60402-01A1), the State of Nebraska Cancer and Smoking Related Disease Research Program.


  • "Evolution Canyon"
  • Cyanobacteria
  • Nostoc linckia
  • Polymorphism
  • Stress

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology


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