The yeast Saccharomyces cerevisiae is the main microorganism responsible for wine fermentation and its development influences the quality of wine. A problem affecting these types of fermentations, generating important losses in this industry, are the slow or stuck fermentations which may result from low nitrogen availability in the must. Therefore, several studies have been directed towards ide...

Nitrogen is one of the most important elements involved in ecosystem biogeochemical cycling. However, little known about characteristics nitrogen cycling during ice-covered period seasonally frozen lakes. In this study, shotgun metagenomic sequencing subglacial water and sediment from Lake Ulansuhai was performed to identify compare metabolism pathways microbes these pathways. total, ammonia as...

The balance between carbon and nitrogen is a key determinant of seed storage components, and thus, is of great importance to rice and other seed-based food crops. To clarify the influence of the rhizosphere carbon/nitrogen balance during the maturation stage of several seed components, transcriptome analysis was performed on the seeds from rice plants that were provided additional nitrogen fert...

In the course of investigating the effects of alcoholt on the liver of the rat it was found that alcohol increased the choline requirement, an effect that was independent of changes in food consumption or caloric intake.1" To explore the possibility that alcohol induced a relative deficiency of choline by altering some aspect of protein metabolism, an investigation of the effects of alcohol on ...

The amount of inorganic carbon is one of the main limiting environmental factors for photosynthetic organisms such as cyanobacteria. Using Synechococcus elongatus PCC 7942, we characterized metabolic and transcriptomic changes in cells that had been shifted from high to low CO(2) levels. Metabolic phenotyping indicated an activation of glycolysis, the oxidative pentose phosphate cycle, and glyc...

The biosynthesis of multiple secondary metabolites in the phytopathogenic ascomycete Fusarium fujikuroi is strongly affected by nitrogen availability. Here, we present the first genome-wide transcriptome and proteome analysis that compared the wild type and deletion mutants of the two major nitrogen regulators AreA and AreB. We show that AreB acts not simply as an antagonist of AreA counteracti...

In a previous study (l), the composition of total cellular amino acids of the ciliated protozoan, Tetrahymena pyriformis (formerly, T. geleii), was presented together with other pertinent data concerning the nitrogen metabolism of this organism. The present investigation was undertaken to obtain information on the free and nonprotein amino acids of this protozoan cell, inasmuch as the nonprotei...

E XPOSING the nonpregnant animal to cold stress has been shown to alter nitrogen metabolism. The endogenous urinary nitrogen excretion of rats was increased after an exposure to a cold environment (Treichler and Mitchell, 1941). Similarly, men consuming low-nitrogen-low-energy diets were in negative nitrogen balance during and for several days after exposure to 8 ~ C. (Issekutz et al., 1962). K...