And shoot elongation

Primary producer Vascular nlant Lactuca sativa Inhibition of germination, root and shoot elongation (after 120-h exposure), IC50 Dutka, 1989a... 

There are no consistent modes of action for this group. They are similar in activity to the acetanilides. These soil-apphed preemergent herbicides have been reported to inhibit root and shoot elongation but are not trasnslocated in the xylem. 

The mode of the germination-stimulatory action of coumarin on plant cells has been widely studied [106—110], and it is similar to the action of plant hormones which control different functions and processes of growth. The relationship between the effects of coumarins and auxins has been suggested [106, 107]. Coumarin in different concentrations stimulates stem and shoot elongation [108, 109] it also elicits a similar action [111] on substances which affect root initiation, cambial activity, and leaf expansion [108, 110]. The plant hormones and coumarin also stimulate the growth of roots. In low concentrations, coumarin exerts a synergistic action with plant growth substances, while with... 

In conclusion, ethylene can promote or inhibit growth depending on the cell type and plant species. Generally, it inhibits shoot elongation in most terrestrial plants, but stimulates underwater shoot extension in many amphibious, wetland, and aquatic species enabling them to keep foliage above the water and... 

The distribution of radioactivity in the plant was determined using X-ray films (macroautoradiographs). The radioactive radiation causes blackenings on the film. During the early development up to shoot elongation, a maximum of 7.5% of the radioactivity applied was taken up and translocated into the wheat stalks and leaves with the... 

Effects of Colletotrichum truncatum spore concentration on shoot elongation of dark-grown hemp sesbania seedlings in a pathogen-weed bioassay. Diamond symbols = control (H20), squares = 102, triangles = 103, and cross marks = 5 x 105 spores/ml respectively. (From Hoagland, R. E. 1995, Biocontrol Sci. Technol., 5, 251-259. With permission.)... 

Table 1 shows the relative biological activity of some GAs toward rice shoot elongation, and their relative affinity to OsGIDl, the GA receptor in rice. 

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