A region of the genome of the cyanobacterium Synechococcus R2, that bears a cluster of genes involved in nitrate assimilation, has been cloned and the relative positions of some of the genes in the region have been determined. Mutations generated by insertion of an antibiotic-resistance gene cassett
Nitrate reductase activity of the cyanobacterium Synechococcus cedrorum
β Scribed by Dr. R. K. Gupta; E. R. S. Talpasayi
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 306 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0233-111X
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β¦ Synopsis
Nitrate reductase activity of the cyanobacterium Synechococcus cedrorum
π SIMILAR VOLUMES
A sensitive procedure for the determination of nitrate within the 1- to 50-microM range is described. The method is based on the photoreduction of nitrate to nitrite by whole cells of a nitrite reductase-less mutant strain of the unicellular cyanobacterium Synechococcus R2. Cell suspensions of this
A phenylalanine-requiring strain of the unicellular blue-green bacterium Synechococcus cedrorum was isolated by means of penicillin enrichment following mutagenesis with nitrosoguanidine. Assays of pertinent enzymes indicated that prephenate dehydratase activity was absent in the mutant.
In vivo' estimates of nitrate reductase activity ## S u m m a r y A c o m p a r i s o n was m a d e of t h r e e different ways of p r e p a r i n g leaf m a t e r i a l of Zea mays L. for t h e 'in vivo' e s t i m a t i o n of n i t r a t e reductase activity. Slicing of l a m i n e a e into l -