Time course of the content of folates and free amino acids in leaves of Pisum sativum L. after irradiation with ultraviolet C

@article{Stakhov2005TimeCO,
  title={Time course of the content of folates and free amino acids in leaves of Pisum sativum L. after irradiation with ultraviolet C},
  author={L. F. Stakhov and Vladimir G. Ladygin and Lyudmila Stakhova},
  journal={Biology Bulletin},
  year={2005},
  volume={32},
  pages={121-127}
}
The effect of irradiation with UV-C on the time course of the content of total folates and free amino acids in leaves of pea (Pisum sativum L.) cultivar Neistoshchimyi was studied. It was shown that photolysis of folates is a rapid response to exposure to ultraviolet, as a result of which the plant produces a stable compound, pterin-6-carboxylic acid, with a relative fluorescence quantum yield ∼2.0 at 20°C (total value, 0.58). Presumably, this compound may be involved in the pterin-mediated… 
Efficiency of Plant UV Irradiation in the Protected Ground
Plants are photosynthetic organisms that depend on sunlight for energy. Besides photosynthetically active radiation (PAR; 400-700 nm), plants are exposed to ultraviolet radiation, which consists of
Physiological Responses of Scenedesmus quadricauda (Chlorophyceae) to UV‐A and UV‐C Light
TLDR
It is concluded that UV light stimulated oxidative stress while exposure time was not sufficient to stimulate larger changes in phenolic metabolites.

References

SHOWING 1-10 OF 16 REFERENCES
Metabolic changes in free amino acids of bean leaves exposed to ozone.
TLDR
The pattern of amino acid labeling and fixation of CO/sub 2/ by ozonated plants suggests a complex process of enhanced decarboxylation of glutamic acid, and inhibited photosynthesis and protein synthesis that could result from the oxidation of essential sulfhydryl groups and increased membrane permeability.
METABOLISM OF OMEGA-AMINO ACIDS. V. ENERGETICS OF THE GAMMA-AMINOBUTYRATE FERMENTATION BY CLOSTRIDIUM AMINOBUTYRICUM.
TLDR
Coenzyme A (CoA)-transferase, phosphotransacetylase, and acetokinase activities have been demonstrated in crude extracts of the organism; the coupling of the reactions catalyzed by these enzymes to the fermentation reactions provides a mechanism whereby C. aminobutyricum can obtain energy from the decomposition of gamma-aminobutyrate.
UV-A-induced expression of GroEL in the UV-A-resistant marine cyanobacterium Oscillatoria sp. NKBG 091600.
TLDR
This UV-A-inducible GroEL may function to upregulate biopterin glucoside biosynthesis, thereby allowing growth underUV-A irradiation.
Microspectrophotometric analysis of intact chromatophores of the Japanese medaka, Oryzias latipes.
TLDR
Leucophores and melanophores should provide the most ultraviolet (UV) photoprotection to fish since the compounds they contain, pteridines and melanin, have strong absorbances in the UV region of the spectrum.
Enzymes of the biosynthesis of octadecanoid-derived signalling molecules.
  • F. Schaller
  • Environmental Science, Chemistry
    Journal of experimental botany
  • 2001
TLDR
This review summarizes recent progress in the identification and characterization of octadecanoid biosynthetic enzymes and in the understanding of the regulation ofOctadecanoids biosynthesis.
Isolation of six unconjugated pteridines from soybean (Glycin max L. Tsurunoko) seeds.
  • M. Kohashi
  • Chemistry, Medicine
    Journal of biochemistry
  • 1980
TLDR
Six unconjugated pteridines stored in soybean seeds were extracted with acid and isolated with a FLorisil column and reversed-phase high-performance liquid chromatography (HPLC) to find a much higher density of the pterin than in the cotyledon after a 6-imbibition.
...
...