Results 131 to 140 of about 32,733 (167)

Synthesis of some useful tritium labelled auxins

Journal of Labelled Compounds and Radiopharmaceuticals, 1992
AbstractThe synthesis of six useful auxins labelled with tritium is described. The following compounds were prepared: 3‐indoleacetic acid‐5‐3H (28.9 Ci‐1.07 TBq/mmol), 3‐indolebutyric acid‐5‐3H (7.3 Ci‐270 GBq/mmol), 1‐naphthylacetic acid‐4‐3H (27.6 Ci‐1.02 TBq/mmol), 2,4‐dichlorophenoxyacetic acid‐5‐3H (18.5 Ci‐685 GBq/mmol), 2(2,4‐dichlorophenoxy‐5 ...
O. Buchman, I. Pri‐Bar, M. Shimoni, J. Azran   +3 more
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Design, Synthesis, and Evaluation of Novel Auxin Mimic Herbicides

Journal of Agricultural and Food Chemistry, 2016
Due to the key roles of auxins as master regulators of plant growth, there is considerable interest in the development of compounds with auxin-like properties for growth management and weed control applications. Herein, we describe the design and multistep synthesis of ten compounds bearing combinations of functional groups commonly associated with ...
Chi-Linh, Do-Thanh, Jose J, Vargas, Joseph W, Thomas, Gregory R, Armel, Michael D, Best   +4 more
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The Route, Control and Compartmentation of Auxin Synthesis

Australian Journal of Plant Physiology, 1993
The study of indole-3-acetic acid synthesis has undergone something of a revival recently in an attempt to understand the control of IAA levels. Results are, however, contradictory with three separate hypotheses emerging. Our own work supports older evidence for L-tryptophan as the IAA precursor and appears to simplify the metabolism of tryptophan to ...
HM Nonhebel, TP Cooney, R Simpson
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Relationship between Auxins and Nucleic Acid Synthesis in Coleoptile Tissues

Nature, 1959
THAT auxins may affect nucleic acid metabolism in plants has been suggested by a number of workers. Silberger and Skoog1 had observed an increase in both the deoxyribonucleic acid and ribonucleic acid content of tobacco pith cells incubated with 0.01 to 10 mgm./l. of indole acetic acid.
B B, BISWAS, S P, SEN
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Auxin‐stimulated RNA Synthesis in Oat Coleoptile Cells

Physiologia Plantarum, 1967
AbstractUsing oat coleoptile segments the following results were obtained.Ten mg/l auxin (indole‐3‐acetic acid) increased the incorporation of uracil‐2‐14C and orthophosphate‐32P into RNA fraction during a relatively short incubation period. Stimulation of 32P incorporation due to auxin was found only in the region heavier than ribosomal RNA, probably ...
Yoshio Masuda, Eiichi Tanimoto, Shunji Wada   +2 more
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Tubulin synthesis and auxin-induced root initiation in phaseolus

Phytochemistry, 1985
The auxin-induced formation of roots in the hypocotyls of Phaseolus vulgaris can be prevented by treatment with actinomycin D, colchicine or cytochalasin B if applied within 40 hr of initiation. Shortly after auxin pretreatment, there is an increase in translatable messenger RNA activity.
Kantharaj, GR, Mahadevan, S, Padmanabhan, G   +2 more
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Uncoupling of Auxin-induced Protein Synthesis and Water Uptake by Kinetin

Nature, 1966
IT is generally recognized that water uptake, synthesis of protein, and respiration are intimately related activities by which the growth of cells and tissues are controlled. Protein synthesis has been implicated in the mechanism of water uptake, and it has been shown that substances which inhibit protein synthesis also inhibit water uptake1.
D, Banerji, M M, Laloraya
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AUXIN-SYNTHESIS INHIBITION BY SUGARS, NOTABLY BY GALACTOSE

Acta Botanica Neerlandica, 1974
SUMMARY In decapitated Avena coleoptiles the regeneration of the physiological tip is inhibited by glucose, galactose, lactose and raffinose. Galactose is the strongest inhibitor, and a further analysis of its action indicates that it inhibits auxin synthesis. The galactose effect is not antagonized by other sugars. Sucrose, maltose, fructose,
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Auxin-induced synthesis of cyclic 3′, 5′-adenosine monophosphate in coleoptiles

Life Sciences, 1971
Abstract In Avena coleoptile sections treated with indole acetic acid there is an increase in the synthesis of cyclic 3′, 5′-adenosine monophosphate as compared to untreated sections. This difference is seen within 30 minutes, the shortest time interval studied.
D, Salomon, J P, Mascarenhas
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Synthesis and auxin activity of 5-substituted 1-naphthaleneacetic acids

Phytochemistry, 1990
Abstract Three 5-substituted derivatives of the synthetic auxin 1-naphthaleneacetic acid (NAA) have been synthesized and evaluated. The 5-nitro and 5-azido analogues were able to promote elongation of excised stem sections, whereas the 5-amino derivative was inactive on growth.
Michael A. Venis, Emrys W. Thomas
openaire   +1 more source