Vinsamlegast notið þetta auðkenni þegar þið vitnið til verksins eða tengið í það: http://hdl.handle.net/1946/29506
Nostoc spp. are cyanobacteria widely existing as a symbiotic partner among lichens and plants. Hormogonia are distinct developmental forms of Nostoc that can enter into symbiotic interactions. Despite the importance, no research so far has clarified what chemical molecule induces hormogonia formation, hampering research related to the Nostoc life cycle and Nostoc symbiotic reactions.
We hypothesized that hormogonia inducing factors (HIFs) should be compounds abundant in Nostoc symbiotic partners, and symbiotic Nostoc strains should react to HIFs. We identified several compounds as potential HIFs at micromolar levels, indicating that the identified molecules are signal molecules for Nostoc differentiation. A difference in reaction levels between symbiotic and non-symbiotic strains to HIFs was also shown. Further genomic comparison between strains could possibly lead to identification of genes involved in hormogonia differentiation. Moreover, this research also suggested new medium usage for future research on hormogonia or Nostoc symbiotic interactions.
The results of this research aim to improve understanding of hormogonia induction in Nostoc and provide focus for research into the initial steps of symbiosis developing into cyanolichen.
|Sugar induction of hormogonia in Nostoc cyanobacteria.pdf||1.37 MB||Opinn||Heildartexti||Skoða/Opna|