Nitrogen Fixation Activity and Genome Analysis of a Moderately Haloalkaliphilic Anoxygenic Phototrophic Bacterium .

The genome of the moderately haloalkaliphilic diazotrophic anoxygenic phototrophic bacterium A-36s isolated from an alkaline lake was analyzed and compared to the genomes of the closest species A-20s and DSM 11289. The genomic features of three organisms are quite similar, reflecting their ecological and physiological role of facultative photoheterotrophs. Nevertheless, the nitrogenase activity of the pure cultures of the studied bacteria differed significantly: the highest rate (4066 nmoles CH/mg of dry weight per hour) was demonstrated by while the rates in and were an order of magnitude lower (278 and 523 nmoles CH/mg of dry weight per hour, respectively).

SNP-Based Analysis Reveals Authenticity and Genetic Similarity of Russian Indigenous Grape Cultivars.

9 Russian grape varieties and the European variety Muscat Hamburg were sequenced and genotyped using 527 SNPs (single nucleotide polymorphisms) with high minor allele frequency for the first time. The data were coupled with previously identified genotypes of 783 varieties and subjected to parentage and population analysis. As a result, contrary to the historical and ampelographic data published in many sources from 1800 to 2012, only two of the nine Russian varieties (Pukhlyakovskiy Belyi and Sibirkovyi) were related to foreign ones and were obviously imported from Europe to the Russian Empire.