in 2003 .
Written in English
|Statement||by Hugh A. L. Henry.|
|The Physical Object|
|Pagination||xv, 208 leaves :|
|Number of Pages||208|
1. The uptake of free amino acids by the grass Puccinellia phryganodes was investigated in soils of an Arctic coastal salt marsh, where low temperatures and high salinity limit inorganic nitrogen (N) availability, and the availability of soluble organic N relative to inorganic N is often high.. 2. Following the injection of 13 C 15 N‐amino acid, 15 N‐ammonium and 15 N‐nitrate tracers Cited by: Soluble free amino acids, ammonium and nitrate ions as sources of nitrogen for plant growth were measured in soils of a coastal marsh grazed by snow geese in Manitoba, Canada. Concentrations of free amino acids in soil were measured on water—extracted samples by high pressure liquid chromatography. Seasonal variations in plant nitrogen acquisition in an ectomycorrhizal alpine forest on the eastern Tibetan Plateau, China, Plant and Role of free amino acids in the nitrogen economy of arctic cryptogams Cited by: Although the relative contribution of free amino acids to the soluble N pool is lower than that found in other Arctic sites (Chapin et al. ; Kielland ), where free amino acids exceed inorganic N by an order of magnitude, the results are comparable to those reported for alpine sites (Raab et al. , ), and they far exceed the.
The total load of free amino acids ranged from to pmol m −3, while combined amino acids ranged from to pmol m −3. At these levels amino compounds could play a role in the chemistry of cloud condensation nuclei and fine particles, for example by influencing their buffering capacity and basicity. Henry and R. L. Jefferies, Free amino acid, ammonium and nitrate concentrations in soil solutions of a grazed coastal marsh in relation to plant growth, Plant, Cell & Environment, 25, 5, (), (). Nonprotein amino acid levels and the fraction of total N represented by amino acids are indices of diagenetic alteration. Amino acids accounted for 13–37% of the total organic C and 30–81% of the total N in the 30‐m samples, and, on average, 10 and 37% of sedimentary C and N. As natural plant growth stimulators, amino acids are widely used to improve the yield and quality of crops. Several studies have illustrated the effects of different amino acids on lettuce plant parts. However, the effects of applying single amino acids on root growth remain elusive. The objective of this study was to evaluate the effect of root application of L-methionine on the growth of.
At sites in Canada (low nitrogen deposition) and the United States (high nitrogen deposition), individual pitchers were fed two amino acids, glycine and phenylalanine, and inorganic nitrogen (as. The uptake of amino acids and inorganic nitrogen by roots of Puccinellia phryganodes was examined to assess the potential contribution of soluble organic nitrogen to plant nitrogen uptake in Arctic c. Summary • The uptake of free amino acids by the grass Puccinellia phryganodes was investigated in soils of an Arctic coastal salt marsh, where low temperatures and high salinity limit inorganic. Free Amino acids 15%. Complete data sheet here. AMINOTAL is a biological bioactivator based on free amino acids obtained by hydrolysis of low molecular weight proteins. Its balanced aminogram allows its application at any time through the crop cycle and acts as: Plant .