Retrospective characterization of a vaccine-derived poliovirus type 1 isolate from sewage in Greece

Article Abstract:

Retrospective molecular and phenotypic characterization of a vaccine-derived poliovirus type 1 isolate from sewage in Greece is described. The recovery of this highly divergent derivative of a vaccine strain has emphasized the urgent implementation of environmental surveillance as a supportive procedure in the polio surveillance system in order to prevent cases or even outbreaks of poliomyelitis.

Greece, Poliomyelitis vaccine, Poliovirus vaccines

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Bacteriophage prevalence in the genus Azospirillum and analysis of the first genome sequence of an Azospirillum brasilense integrative phage

Article Abstract:

The prevalence of bacteriophages is examined in 24 strains of four species of plant growth-promoting rhizobacteria belonging to the genus Azospirillum. Phage DNA is purified and the complete genome sequence of the lytic Azospirillum brasilense Cd bacteriophage ([PHI]-Ab-Cd) from Azospirillum brasilense Cd strain is analyzed.

Environmental aspects, Rhizobium, Bacteriophages, Control

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Effects of disruption of homocitrate synthase genes on Nostoc sp. strain PCC 7120 photobiological hydrogen production and nitrogenase

Article Abstract:

A useful strategy to improve sustained photobiological hydrogen production in cyanobacteria is demonstrated. The process involves modification of two homocitrate synthase genes, nifV1 and nifV2, from the cyanobacterium Nostoc sp. strain PCC 7120.

Industrial Gas Manufacturing, Industrial gases, Hydrogen, Physiological aspects, Cyanobacteria, Nitrogenase, Chemical properties

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