Transport Triiodobenzoic acid

There is little published information of interest to carbohydrate chemists concerning the benzoic acid herbicides. The predominant member, 2,3,6-trichlorobenzoic acid, inhibited uptake and utilization109 of acetate-14C. It shows some auxin-like properties, whereas 2,3,5-triiodobenzoic acid appears to block the transport of natural and synthetic auxins, and has often been termed an antiauxin. The triiodo compound inhibited oxygen (86% at... [Pg.407]

In contrast to the 2,4,6-triiodobenzoic acids, substituted alkanoic and alkoxyalkanoic acids containing a 2,4,6-triiodophenyl or a 2,4,6-triiodophenoxy group with open position 5, such as iopanoic acid, tyropanoate, iogly-camic acid, and iopronic acid, have both lipophilic and hydrophilic properties. These contrast acids have an acidity constant about two units higher than that of the water-soluble, fully substituted 2,4,6-triiodobenzoic acids (263) and are not completely ionized at the physiological pH. In the nonionized form, the contrast molecules can be absorbed and transported across cell membranes after oral administration. [Pg.565]

In summary, purines, kinetin and its artificial analogues, benzimidazole, indoleacetic acid, triiodobenzoic acid, 2,4-dichlorophenoxyacetic acid and a hypothetical root substance show ceitain common effects. However, they do not manifest themselves in all the investigated materials in the same way, possibly because some are quickly decomposed or translocated. One of the most general effects is the retardation of yellowing of excised leaves or leaf parts. For some of these substances, especially kinetin, other effects have been observed, but it is not known whether they are characteristic for the other substances. Among these effects are active transport, accumulation... [Pg.169]

Barry AJ (1971) The effect of 2,3,5-triiodobenzoic acid on the transport and metabolism of indoleacetic acid in intact pea seedlings. B Sc Diss, Univ Southampton Basler E (1974) Abscisic acid and gibberellic acid as factors in the translocation of auxin. Plant Cell Physiol 15 351-361... [Pg.127]

Christie AE, Leopold AC (1965 a) On the manner of triiodobenzoic acid inhibition of auxin transport. Plant Cell Physiol 6 337-345 Christie AE, Leopold AC (1965 b) Entry and exit of indoleacetic acid in corn coleoptiles. Plant Cell Physiol 6 453-465... [Pg.129]

Konings H (1968) Auxin in root geotropism. In Vardar Y (ed) The transport of plant hormones. North-Holland, Amsterdam, pp 237-250 Konings H (1969) The influence of acropetally transported indoleacetic acid on the geotropism of intact pea roots and its modification by 2,3,5-triiodobenzoic acid. Acta Bot Neerl 18 528-537... [Pg.138]

Kuse G (1953) Effect of triiodobenzoic acid on the growth of lateral bud and on tropism of petiole. Mem Coll Sci Kyoto B 20 207-215 Lagerstedt HB, Langston RG (1966) Transport of kinetin-8- C in petioles. Physiol Plant 19 73 740... [Pg.138]

Morris DA, Briant RE, Thomson PG (1969) The transport and metabolism of relabelled indoleacetic acid in intact pea seedlings. Planta 89 178-197 Morris DA, Kadir GO, Barry AJ (1973) Auxin transport in intact pea seedlings Pisum sativum L.) The inhibition of transport by 2,3,5-triiodobenzoic acid. Planta 110 173-182... [Pg.140]

Thomson KSt, Hertel R, Muller S, Tavares JE (1973) 1-N-naphthylphthalamic acid and 2,3,5-triiodobenzoic acid In vitro binding to particulate cell fractions and action on auxin transport in corn coleoptiles. Planta 109 337-352 Thornton RM, Thimann KV (1967) Transient effects of light on auxin transport in the Avena coleoptile. Plant Physiol 42 247-257 Tsurumi S, Ohwaki Y (1978) Transport of " C-labeled indoleacetic acid in Vicia root segments. Plant Cell Physiol 19 1195-1206... [Pg.145]

Winter A (1967) The promotion of the immobilization of auxin in Avena coleoptiles by triiodobenzoic acid. Physiol Plant 20 330-336 Winter A (1968) 2,3,5-Triiodobenzoic acid and the transport of 3-indoleacetic acid. In Wightman F, Setterfield G (eds) Biochemistry and physiology of plant growth substances. Runge, Ottawa, pp 1063-1076... [Pg.147]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...