Effects of soil type on the reproduction and damage potential of Meloidogyne incognita on soybean, Glycine max (L.) Merr., were determined at five locations in North Carolina, including one site where plots with six soil types were established. M. incognita reproduced readily on a susceptible soybean cultivar in most soil types, with somewhat limited reproduction in muck soils. The relationship...

Glycine and other a-amino acids in very low concentrations have been shown to increase the apparent activity of several enzymes: urease, the various amylases, pancreatic lipase, tyrosinase, yeast peptidase, and the phosphatases (l-3). Occasional observations in the literature indicate, however, that higher concentrations of a-amino acids exert an inhibiting effect on enzyme action (1,4-7). Thus...

An experiment to evaluate the control of soybean cyst nematodes compared 1-year, 2-year, and 3-year nonhost rotations with continuous soybeans (Glycine max) in 0.2-ha plots. In a second 1-year rotation, the plots were planted to soybean or corn (Zea mays) after fumigation in the spring with a split application of 1,3-dichloropropene (748.2 liters/ha). The effects of the nematicide were apparent...

Glycine contributes carbon atoms 4 and 5 and nitrogen atom 7 of the purine ring (1-3). Benedict, Yfi, Bien, Gutman and Stetten (4) have described experiments in which the abundance of N15 in uric acid was measured for several days following an oral test dose of glycine-N'5. In two gouty subjects, three times as much of the administered N15 was recovered in urinary uric acid as in normal subject...

Isotopic studies have demonstrated that glycine is used in the biosynthesis of hemoglobin. Glycine has been tagged in one of three ways: (a) with N’” in the amino group (l-3), (b) with Cl4 in the a-methylene carbon position (4), and (c) with Cl4 in the carboxyl group (5). When any of these three forms of glycine is fed to animals, the isotope is incorporated into hemoglobin, but interesting dif...

An adolescent male proband with hypersarcosinemia was discovered incidentally in a French-Canadian family; no specific disease was associated with the trait. The hypersarcosinemia is not diminished by dietary folic acid even in pharmacologic doses (30 mg/day). The normal absence of sarcosine dehydrogenase in cultured human skin fibroblasts and in leukocytes was confirmed, thus eliminating these...

The P-carbon atom of n-serine (1) and formia acid (2, 3) were both shown to participate to about the same degree as precursors of the ureide carbons of uric acid. Of all carbon sources investigated these two were used to the highest extent. L-Se&e is also the most efficient known source of glycine in hippuric acid formation (4) and heme synthesis (5), as well as for the 4, 5, and 7 positions of...

A study was made on the effect of glycine on systems involving trypsin and BAEE(1) or TSAME on the one hand, or alpha-chymotrypsin with any of the substrates BAEE, TEE, or PEE, on the other. In all cases there was a linear relationship between the rate logarithm and the reciprocal of the dielectric constant of the glycine solution. The slopes were positive in the reactions of trypsin. In those ...

Glycine acts as a necessary coagonist for glutamate at the NMDA receptor (NMDAR) complex by binding to the strychnine-insensitive glycine-B binding site on the NR1 subunit. The fact that glycine is normally found in the brain and spinal cord at concentrations that exceed those required to saturate this site has led to the speculation that glycine normally saturates NMDAR-containing synapses in ...

Glycine is the major inhibitory neurotransmitter in brainstem and spinal cord, whereas in hippocampus glycine exerts dual modulatory roles on strychnine-sensitive glycine receptors and on the strychnine-insensitive glycineB site of the N-methyl-D-aspartate receptor (NMDAR). In hippocampus, the synaptic availability of glycine is largely under control of glycine transporter 1 (GlyT1). Since epil...