Differential response of NaCl-Resistant mutants of the cyanobacterium Nostoc muscorum to salinity and osmotic stresses

Autor:	Santosh Bhargava, Kiran Singh
Rok vydání:	2006
Předmět:	Cyanobacteria Osmotic concentration Strain (chemistry) biology Physiology Antiporter Mutant Nitrogenase General Medicine Photosynthesis biology.organism_classification Applied Microbiology and Biotechnology Biochemistry Osmoregulation Biotechnology
Zdroj:	World Journal of Microbiology and Biotechnology. 22:783-789
ISSN:	1573-0972 0959-3993
Popis:	In the parent strain of Nostoc muscorum, the percentage survival, nitrogenase activity and oxygenic photosynthesis were severely impaired by NaCl (ionic) and sucrose (non-ionic) stresses. Spontaneously occurring NaCl-Resistant mutant clones of the cyanobacterium N. muscorum were found to exhibit differential responses under ionic and non-ionic stresses. One of the mutants (NaCl-R) was found to show resistance in terms of percentage survival, nitrogenase activity and oxygenic photosynthesis under saline (ionic) as well as osmotic (non-ionic) stresses and showing compatible solute strategy for such adaptation. Another mutant (Na+-R) was found to show resistance only to salinity stress and showed an enhanced Na+-efflux system driven by H+. The Na+-R mutant differed from the NaCl-R mutant strain in the sense that it was sucrose sensitive.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::97d6c0b2ec98305751d65fc694f4cc6e https://doi.org/10.1007/s11274-005-9104-2 Zobrazit plný text záznamu Full text from SpringerLink