𝔖 Bobbio Scriptorium
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Host-phage interactions under osmotic stress in Nostoc muscorum

✍ Scribed by U. Pandey; Prof. S. P. Singh

Book ID
102390663
Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
350 KB
Volume
35
Category
Article
ISSN
0233-111X

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✦ Synopsis

Cyanophage N-1 multiplication in Nostoc muscorum exposed to osmotic stress was studied. Osmotic stress (0.1 M NaCl, 2-8 h), reduced the host photosynthesis and nitrogenase activity. Latent period of the virus was extended followed by a significant reduction in burst size. The deployment of osmo-tolerant host and a osmoprotective agent, glycine betaine (1 m), improved cyanophage yield. The observations form the first report of cyanophage multiplication in a cyanobacterium exposed to osmotic stress and modifications by a osmoprotective agent or by a osmotolerant host.

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## Abstract Spontaneously occurring thallium‐resistant (Tl^+^‐R) mutant of diazotrophic, heterocystous cyanobacterium __Nostoc muscorum__ is described in which Tl^+^‐R phenotype is the cause of defective salinity‐inducible K^+^ uptake activity and proline uptake activity. The results indicate that