Movement, leaf

These three functions involve the movement of O2, CO2, and HjO through the epidermal layers of the leaf. The analogy to human inhalation is obvious. With the diffusion of gases into and out of the leaf, pollutant gases have a direct pathway to the cellular system of the leaf structure. Direct deposition of particulate matter also occurs on the outer surfaces of the leaves. 

Chemical studies on nyctinastic leaf movement regulated mainly by heterocycles 99H(51)927. 

Heterocycles controlling leaf movement of plants 99YGK571. 

Ludlow, M.M. Bjorkman, O. (1984). Paraheliotropic leaf movement in Siratro as a protective mechanism against drought-induced damage to primary photosynthetic rections damage by excessive light and heat. Planta, 161, 505-18. 

In the oxamyl tomato study, the DFR samples were obtained using a 5-cm Birkestrand sampler (10-cm disk size using the upper and lower surfaces). The sample consisted of 40 leaf disks or 400 cm from each subplot. The samples were collected impartially or in a nondirected approach from the middle two rows. The plot was four rows wide and the tractor came into contact with the first and fourth rows as the application was made. The middle two rows should be undisturbed by this movement and should therefore provide a more representative sample. 

Goodwin PB. Molecular size exclusion limit for movement in the symplast of the Elodea leaf. Planta 1983 157 124-130. 

Tobacco plants Long-distance movement of cherry leaf roll virus in infected plants Mas and Pallas (18)... 

The hydrophobic waxy cuticle of plants can inhibit the movement and accessibility of nutrients to bacterial cells. However, biosurfactants produced by the majority of epiphytic Pseudomonas spp. decreases the water tension, enabling relatively free movement across the leaf surface to nutrient sources and natural openings such as stomata. Pseudomonas are also known to release a toxin called syringomycin that can produce holes in the plant cell membrane allowing access to intracellular nutrients without necessarily resulting in disease symptoms (Cao et al.r 2005). 

Gallic acid 4-0-((3-D-glucopyranosyl-6 -sulfate), the periodic leaf movement factor from Mimosa... 

Treatment of Com. Ten microliters of an 80% acetone solution, containing 100 fig. of C14-gibberellin, was applied with a micropipet near the middle of the upper surface of the first leaf, followed by 10 fjl. of 0.1% Tween 20 and 50% ethyl alcohol in order to increase absorption of the radioactive material. The drop of solution was kept from running down by means of lanolin paste. Four normal and four dwarf com plants were thus treated, while untreated plants were kept as controls. The same number of dwarf plants was treated with 0.05 fic. of C14-5-aminotriazole in order to compare the pattern of translocation of gibberellin with that of a compound whose movement has been studied previously (4). The treated plants and controls were then placed in the growth chamber, and one or two specimens were harvested at the end of 1, 2, and 7 days, freeze-dried, and autoradiographed. 

Figure 3,C shows an additional movement of radioactivity following foliar application of C14-gibberellin. This was a wedge-shaped movement from the site of application towards the leaf tip and has been ascribed by Strugger to transpira-tional movement in the cell walls (9). This movement has also been observed with the more mobile compounds, like maleic hydrazide, monuron, simazine, and aminotriazole (5).

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