In 1939 Schoenheimer, Ratner, and Rittenberg (1) employed nn-tyrosine labeled with heavy nitrogen (N15) to study the metabolism of this amino acid and the fate of its amino nitrogen in rats. The present investigation deals with the metabolism in rats of radioactive nn-tyrosine (tyrosine”), labeled in the /3 position with the long lived Cl* isotope of carbon (2).l The labeling of the carbon skel...

Thermal stress conditions during alcoholic fermentation modify yeasts' plasma membrane since they become more hyperfluid, which results in a loss of bilayer integrity. In this study, the influence of elevated temperatures on nitrogen metabolism of a Saccharomyces cerevisiae strain was studied, as well as the effect of different concentrations of SO(2) on nitrogen metabolism under thermal stres...

Abstract Lichens are one of the most responsive components ecosystem to reactive forms nitrogen. In this work, we selected lichen genera Cladonia and Usnea , composed terricolous epiphytic lichens respectively, described as sensitive nitrogen, test effects different doses nitrogen on physiological parameters (photobiont mycobiont vitality, chitin quantification, content stable isotopes analysis...

The present study aimed to evaluate the influence of fertilization formulated at planting and doses nitrogen in topdressing on yield components second-crop corn. experiment was conducted between March June 2018 farm State University Goiás, Unit Ipameri-GO. randomized block design, arranged a 3 x 5 factorial scheme with four replications, used. Three fertilizer formulations (06-22-12; 08-20-15 0...