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The use of C14 in the investigation of the biosynthesis of rubber and accessory substances in kok-saghyz Plant physiology. Agrochemistry. Soil science



The use of C14 in the investigation of the biosynthesis of rubber and accessory substances in kok-saghyz Plant physiology. Agrochemistry. Soil science



The use of C14 in the investigation of the biosynthesis of rubber and accessory substances in kok-saghyz Plant physiology Agrochemistry Soil science Primenenie C14 dlya vyyasneniya mekhanizma bio-sinetza kauchuka i ego sputnikov v kok-sagyze In: Fiziologiya rastenii Agrokhimiya Pochvovedenie Plant physiology Agrochemistry Soil science 34-42



In June-July 1953-1956, neutral solutions of substances labelled with C14 were introduced into year-old plants of kok-saghyz by means of direct application on the leaves or by injection into the root. Approximately 1% of the introduced C14 reached the cellulose, carotene, rubber, and the resin. Within 5-6 days, 50-80% of C14, independent of the light regime, was secreted from the plants in the form of C14O2. The highest radioactivity was communicated to the rubber by alanine-2-C14, a somewhat weaker activity by saccha-rose-C14, [alpha]-glucose-3,4-C14, [alpha]-fructose- 1-C14, as well as by acetic acid 1-C14 levulinic acid-1-C14, acetoacetic acid-3-C14, glyceric acid-1-C14, glycine -1-C14, and acetone 2-C14, while the pyrotartaric acid-1-C14, alanine -1-C14, [alpha]-gluconic acid-1-C14 and benzoic acid -1-C14, almost did not reach the rubber at all. An intermediate position was taken by the pyrotartaric acid -2-C14 and [beta]-methylcrotonic acid-3-C14. a relatively high radioactivity in the carotene reaching a maximum after 3-4 days, and a fall after 0 to 10 days has been observed after the introduction of alanine-2-C14, acetic acid-1-C14 and acetone -2-C14. The average life of a molecule of radioactive carotine was 3-5 days. The radioactivity of cellulose from the leaves reached a maximum on the 5th day after the introduction of [alpha]-glucose-1-C14 and saccharose-C14. It is supposed that during the formation of rubber and carotene a condensation of a di-carbon molecule with trioses of their derivatives with the participation of enzymes takes place.

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