Roots, adventitious

Though the number of shoots developing adventitious roots was not significantly different between treated samples and control, the average length of adventitious roots declined significantly at 500 ppmw. At this concentration, roots appeared somewhat brownish while the tips were slightly swollen. 

Antisense Juglans nigra x J. regia Enhanced adventitious root formation 389... 

Rhus javanica Araliaceae Adventitious roots Riccionidin A 82 (2000)... 

Taniguchi, S. et al., Galloylglucoses and riccionidin A in Rhus javanica adventitious root cultures, Phytochemistry, 53, 357, 2000. 

Portulal (Figure 8) is a novel diterpene containing a perhydroazulene nucleus and was isolated from Portulaca grandi-flora Hook. It inhibits the elongation of Avena coleoptile sections induced by IAA. It also accelerates adventitious root formation of Azukia epicotyl cuttings. 

Peptides a) Malformin A Aspergillus niger Causes curvature of corn roots and inhibits adventitious root formation in Phaseolus vulgaris 178... 

Because of the obligate outcrossing nature of alfalfa, all experiments were carried out using vegetative cuttings of primary transformants. Nodal stem sections were placed in sterile, moist vermiculite for approx 14 d to stimulate adventitious root production, then transferred to a mix of sand and soil (1 1 [v/v]) in 3.8 x 21 cm plastic cone-tainers (Stuewe Sons, Corvallis, OR) and fertilized monthly with soluble 10 10 10 (N P K) fertilizer. 

Wample, R.L. and Reid, D.M., The role of endogenous auxins and ethylene in the formation of adventitious roots and hypocotyl hypertrophy in flooded sunflower plants (Helianthus annuus), Physiol. Plant.,... 

Weierskov, B., Relations between carbohydrates and adventitious root formation, in Adventitious Root Formation in Cuttings, Davis, T.D., Haissig, B.E., and Sankhla, N., Eds., Dioscorides Press, Portland, OR, 1988, pp. 70-78. 

Hase, A., Changes in respiratory metabolism during callus growth and adventitious root formation in Jerusalem artichoke tuber tissues, Plant Cell Physiol., 28, 833-841, 1987. 

Plant hormones492 493 and various nutrients494 regulate the formation of postembryonic roots. It is well known that cytokinin application inhibits the formation of lateral and adventitious roots, whereas auxin promotes root... 

A root-derived suppressor negatively regulating the formation of roots has been hypothesized.497 This proposed mechanism, termed root apical dominance, is analogous to the means for apical dominance in shoots. The cytokinin, tZR, in root xylem sap is hypothesized to play the role of the main suppressor, and tZR transported from roots to shoots via the transpiration stream negatively regulates the formation of adventitious roots.365... 

Biological indicator species such as fresh water sponges, clams, mussels, insect larvae that sorb water-borne pollutants are difficult to assess over time periods of years. The lanthanides may be used as indicator species utilizing the adventitious roots of stream-side trees [204-206]. The ability of tree roots to sorb both chelated and non-chelated lanthanides from water indicate that aquatic roots accumulate, concentrate and retain lanthanides to such an extent that the roots can be used as indicators of aquatic pollution, and that lanthanides can be studied as analogues of toxic elements and compounds. 

Auxin-like responses, exudates, and initiation of adventitious roots affected. Cell elongation and division promoted or inhibited. Geotropic response lost. 

Incomplete cessation cell division, root tip swelling and adventitious root development. Root uptake reduced, roots softened and decayed. 

The herbicides resemble and mimic auxins in the activity. They compete with natural auxins, cause abnormal elongation at the growing terminals, tissue proliferation, induce adventitious roots, and modify the arrangement of leaves and other organs. These herbicides act in the same way as the chloro-phenoxy acids (2,4-D and relatives) however, the specific mechanism of action of the benzoic acid herbicides is unknown. 

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