Phaseolus hypocotyls

Bean hypocotyls (Phaseolus vulgaris) incision woimding of hypocotyls oxidative cross-linking of cell wall proteins [176]... 

BolweU, G.P. and Northcote, D.H. (1981) Control of hemiccllulose and pectin synthesis during differentiation of vascular tissue in bean (Phaseolus vulgaris) caUus and in bean hypocotyl. Planta, 152 225-233. 

Parthenin (19) has at a concentration of 50 ppm no effect on the germination of the bean Phaseolus vulgaris but inhibits the development of radicles and hypocotyls (41). Similar effects were observed by Kanchan for Parthenlum hysteropherus and Eleusine coracana coleoptiles (42) and it was shown that besides parthenin (19), caffeic acid, vanillic acid, ferulic acid, chlorogenic acid an3 anisic acid were major constituents in P. hysteropherus (43). 

Figure 1. Developing secondary thickened wall of the hypocotyl of Phaseolus vulgaris. The section was treated with an antibody specific for / 1 — 4 linked D-xylose units and stained with gold-labelled goat-antirabbit serum. The label is seen at the secondary thickening (st) and the vesicles of the Golgi apparatus (v).

The Css polyprenol (154) obtained from leaves of Magnolia campbelUi has been shown to be a mixture of cis- and /ran -isomers. The preparation of dolichyl phosphate (155) by a pea cell-free extract has been described. Evidence has been obtained that a lipid, containing 7V-acetylglucosamine, which was obtained from Phaseolus vulgaris hypocotyls, consists of a mixture of the dolichol (156) derivatives dolichyl pyrophosphate N-acetylglucosamine and dolichyl pyrophosphate di-N-acetylchitobiose. ... 

Inhibition of growth rate3 e.g., elongation of stem in Picea, Phaseolus, Pisum, of mesocotyl in Avena, of hypocotyl in Sinapis Sucrose uptake in epicotyles of Pisum Acetate uptake in roots of Phaseolus Potassium uptake in Pisum Enzyme activity (e.g., ATPase) in Phaseolus... 

Katayama and Funahashi (1969) used P05 in a study of phospholipid biosynthesis in mung bean Phaseolus radiatus L.). In the cotyledons PC was most heavily labeled, whereas in the hypocotyls and radicles PE was most heavily labeled. However, in both cases the highest specific activity at early sampling times was PS, perhaps indicating the status of this compound as a precursor of PE and PC. A notable observation in Katayama and Fana-hashi s (1969) study was the fraction of the phospholipid stable to alkaline hydrolysis (30% in the cotyledons and almost 50% in the hypocotyls and radicles). The alkali stability is indicative of sphingolipids which are worthy of further study (see Section IV,L). 

In 1975, two isoflavonoid phytoalexins such as a pteiocarpan phaseolin [(-)-phaseollin, 39] (Figure 9) and an isoflavanone kievitone (40) (Figure 9) were identified from their hypocotyls of Phaseolus vulgaris by Rhizoctonia solani Kiihn infection [47],... 

Smith DA, Vanetten HD, Bateman DF. Accumulation of phytoalexins in Phaseolus vulgaris hypocotyls following infection by Rhizoctonia solani. Physiol. Plant Pathol. 5, 51-64, 1975. 

Batish DR, Singh HP, Kaur M, Kohli RK, Yadav SS (2008) Caffeine affects adventitious rooting and causes biochemical changes in the hypocotyl cuttings of mung bean Phaseolus aureus Roxb.). Acta Physiol Plant 30 401 05. doi 10.1007/sll738-007-0132-4... 

Measurements and calculations of velocities, densities, and intensities of transport to characterize hormone translocation usually imply that these quantities be constant and that the hormone moves in a stream. They do not, however, allow for degradation and/or immobilization, i.e., leakage of molecules out of the stream, to take place. Yet such phenomena do take place, and do vary with time and distance from the hormone source. Variations in the density of mobile auxin have been demonstrated even within short transport sections (e.g., Kaldewey 1963 in Fritillaria axes Newman 1965, 1970 in Avena coleoptiles Kaldewey and Kraus 1972 in Gossypium seedlings Kaldewey etal. 1974 in Pisum internodes Kaldewey 1976 in Tulipa axes). The commonly observed decline of mobile auxin as a function of distance from the auxin source indicates that not all auxin molecules move with the same velocity. The same conclusion may be drawn from the tpyical initial gradual increase of hormone flux into basal receivers which occurs before linearity of the time course is reached (e.g., Hertel 1962, Hertel and Leopold 1963, de la Fuente and Leopold 1973 in Helianthus hypocotyls McCready and Jacobs 1963 a, b, in petioles and Smith and Jacobs 1968 in hypocotyls of Phaseolus de la Fuente and Leopold 1966 in Coleus internodes Thornton and Thimann 1967 in Avena coleoptiles Greenwood and Goldsmith 1970 in Pinus embryonic hypocotyls Wilkins and Cane 1970, Wilkins etal. 1972 and Shaw and Wilkins 1974 in Zea roots Kaldewey et al. 1974 in Pisum internodes Tsurumi and Ohwaki 1978 in Vida roots). 

Jacobs M, Hertel R (1978) Auxin binding to subcellular fractions from Cucurbita hypoco-tyls in vitro evidence for an auxin transport carrier. Planta 142 1-10 Jacobs M, Ray PM (1976) Rapid auxin-induced decrease in free space pH and its relationship to auxin-induced growth in maize and pea. Plant Physiol 58 203-209 Jacobs WP (1950) Auxin-transport in the hypocotyl of Phaseolus vulgaris L. Am J Bot 37 551-555... 

Smith CW, Jacobs WP (1968) The movement of lAA- C in the hypocotyl of Phaseolus vulgaris. In Vardar Y (ed) The transport of plant hormones. North-Holland, Amsterdam, pp 48-64... 

Zwar JA, Rijven AHGC (1956) Inhibition of transport of indole-3-acetic acid in the etiolated hypocotyl of Phaseolus vulgaris L. Aust J Biol Sci 9 528-538... 

Phytoalexin from leaves and hypocotyls of Glycine max and from mung beans (Phaseolus aureus). Needles by subl. Mp 284-286°. 

The distribution of xyloglucan in the cotyledons and hypocotyls of Phaseolus aureus seeds has been studied. The plant tissue was extracted with increasing concentrations of potassium hydroxide and the xyloglucan in the extracts was... 

In Phaseolus aureus hypocotyl segments, more than 80% of the enoto-(1 -> 3)-j8-D-glucanase activity has been shown to be located in particular... 

Dixon R A, Dey P M, Lawton M A, Lamb C W 1983 Phytoalexin induction in french bean. Intercellular transmission of elicitation in cell suspension cultures and hypocotyl sections of Phaseolus vulgaris. Plant Physiol 71 251 - 256... 

Schnitzer and co-workers also demonstrated that FA stimulated root initiation in hypocotyl segments of Phaseolus vulgaris. Interestingly, the optimal concentration of FA required in the hypocotyl system (3000 - 6000 mgl is considerably greater than the 25 mgl reported... 

Buchala, a. j., and G. Franz A Hemicellulosic P-Glucan from the Hypocotyls of Phaseolus aureus. Phytochemistry 13, 1887 (1974). 

Fig. 2.13. Mitochondria of Phaseolus aureus hypocotyl as seen in the EM showing typical crista structure, (x 40,000.) (Photo by Helgi Opik, Swansea.)...

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