11 výsledky
Treatment of suspension-cultured Glycine max cv Harosoy 63 cells with soluble chitosan (20-500 micrograms per milliliter) increased membrane permeability as shown by leakage of electrolytes, protein, and UV absorbing material. Severe damage to the cell membrane by chitosan (100 and 500 mug/ml) was
Active polyamine biosynthesis occurs in the embryonic axis, but not in the cotyledons, during germination of Glycine max (L.) cv Williams seeds and subsequent growth of the young seedlings. The hypocotyl and radicle synthesize and accumulate considerable amounts of cadaverine (Cad) and putrescine
Lysine decarboxylase (EC 4.1.1.18) was purified 364-fold from 2-day-old soybean (Glycine max) axes. The enzyme was a monomeric protein having a molecular mass of 95,000 Da and an isoelectric point of 4.0. The K(m) for L-lysine was 1.17 mM. The optimal temperature and pH of the enzyme were 37 degrees
Treatment with chitosan of suspension-cultured Glycine max cells labeled with (45)Ca(2+) caused a rapid release of calcium, which was complete much earlier than the chitosan-induced leakage of intracellular electrolytes and probably reflects calcium loss primarily from the cell wall and/or plasma
The protein and mRNA levels of late embryogenesis abundant (LEA) genes may be linked to osmotic stresses. Here, we characterized three soybean hydrophilic LEA proteins--GmPM11 (LEA I), GmPM6 (LEA II), and GmPM30 (LEA III)--by circular dichroism and Fourier transform infrared spectroscopy. Structural
Late embryogenesis-abundant (LEA) proteins, accumulating to a high level during the late stages of seed development, may play a role as osmoprotectants. However, the functions and mechanisms of LEA proteins remained to be elucidated. Five major groups of LEA proteins have been described. In the
DNA binding and uptake by nuclei isolated from soybean (Glycine max L. Merr.) protoplasts were investigated using radioactive homogeneous DNA prepared from soybean cells. DNA binding to nuclei was found to decrease drastically with increased incubation time. Total uptake and acid-precipitable uptake
Chloroplasts were isolated from wild type (DG) and heterozygous mutant (LG) soybean (Glycine max) leaves, and various biochemical functions were compared. Noncyclic electron transport, and its coupled phosphorylation, cyclic phosphorylation and H(+) ion transport in both systems, were 3 to 5 times
A new method for the rapid and quantitative fluorometric determination of callose is described. In suspension-cultured cells of Glycine max, synthesis of callose starts within 20 minutes of treatment with chitosan and parallels over hours the accumulation of 1,3-linked glucose in the wall.
Proteases play an important role during mammalian fertilization. Their function is frequently investigated using specific inhibitors. We analyzed four serine protease inhibitors [4-(2-aminoethyl) benzene sulfonyl fluoride hydrochloride (AEBSF), soybean trypsin inhibitor from glycine max (STI),
Binding and uptake of exogenous DNA by nuclei isolated from Glycine max L. Merr were studied using (3)H-labeled single-stranded DNA of bacteriophage fd. A comparison of single-stranded with double-stranded DNA for binding and uptake by nuclei was also made.Isolated nuclei were incubated with