Root formation

Several bioactive fractions from pea stem cell wall pectin have been separated. The fractions contained mainly galacturonides inhibited the process of root formation in thin cell-layer explants, while the fractions contained only neutral sugars stimulated this process to different extend. Analysis of the last fractions showed that they mainly consisted of galactan and arabinogalactan fragments. 

Effect of oligosaccharide fractions on root formation in BTCL explants after 20... 

Thus, the hydrolysis of pectic polysaccharides revealed the fragments with different effect on TCL explant root formation. The neutral oligomers stimulated... 

M. Arahou and H. G. Diem, Iron deficiency induces cluster (proteoid) root formation in Casuarina i>lauca. Plant Soil I96 7 (1997). 

The recent report of wave-like patterns of bacteria and water soluble carbon associated with wheat roots (58) which were not strongly correlated with each other or with lateral root formation pose a challenge for models. So do the reports of highly dynamic and erratic population fluctuations of individual pseudomonad clones on sugar beet roots (59). 

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

Find a flowering plant that interests you. Look at the root formation, leaf shapes and how they are attached to the stem, and the shape of the flower. Draw these different shapes. Find molecules that resemble these different shapes. Remember that group 3A elements form trigonal planar shaped molecules, group 4A elements form tetrahedral shaped molecules, group 5A elements form pyramid shaped molecules and group 6A elements form bent shaped molecules. Carbon chains have a zigzag shape and the DNA molecule is a double helix. You will see that these molecular shapes are duplicated in natural objects. See how many molecular shapes you can find in an ordinary flower. 

In the last 40 years of research on HS biological activity, several aspects have been elucidated. The favorable morphological effects of HS on plants regarding growth enhancement have been demonstrated on several plant species under different study conditions. Besides these observations, effects on morphogenesis have also been demonstrated in terms of (a) the induction of lateral root formation and (b) root hair initiation and development in intact plants and stimulation of root and shoot development in treated cell calluses. 

Petersen, C.A., Emanuel, M.E., Humphreys, G.B. Pathway of movement of apoplastic fluorescent dye tracers through the endodermis at the site of secondary root formation in corn (Zea mays) and broad bean (Vicia... 

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... 

The root tip with apical meristem showed length enhancement with lateral root formation. However, the center root tip formed lateral roots without length enhancement of the original root tip (Fig. 3). Some researchers have reported the effect of the apical dominance on growth, which was observed as an increase in specific growth rate for inocula formed by branched roots (12,14). 

Cassava is a shrubby perennial crop which is well-recognized for the ease of plantation and low input requirement. The plant can grow in all soil types, but root formation is better in loose-structured soils, such as light sandy loams and/or loamy... 

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. 

Aryl-A2-l,3,4-oxadiazolin-5-ones stimulate root formation in beans (77MI42302) and together with 2-(2-carboxyphenyl)-5-aryl-l,3,4-oxadiazoles (77AJC2225) act as plant growth regulators. 

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