Split leaf

Split leaf philodendron Philodendron spp 2a Calcium oxalate crystals... 

Nettlehead, first described in 1894, is economically the most serious of the virus diseases. At least two viruses are involved Arabis mosaic virus and Prunus necrotic ringspot virus. Both are sap-transmissible and the former is carried by the eelworm Xiphinema in the soil. The same two viruses are also responsible for another virus disease, split-leaf blotch. 

Split leaf sheath Entire leaf sheath Fig. 19.2 Parts of the grass leaf sheath. 

Arisaema triphyllum (jack-ir>foe-puIpR) Monstera (split leaf philodendrot ... 

The ground term of the cP configuration is F. That of is also F. Those of and d are " F. We shall discuss these patterns in Section 3.10. For the moment, we only note the common occurrence of F terms and ask how they split in an octahedral crystal field. As for the case of the D term above, which splits like the d orbitals because the angular parts of their electron distributions are related, an F term splits up like a set of / orbital electron densities. A set of real / orbitals is shown in Fig. 3-13. Note how they comprise three subsets. One set of three orbitals has major lobes directed along the cartesian x or y or z axes. Another set comprises three orbitals, each formed by a pair of clover-leaf shapes, concentrated about two of the three cartesian planes. The third set comprises just one member, with lobes directed equally to all eight corners of an inscribing cube. In the free ion, of course, all seven / orbitals are degenerate. In an octahedral crystal field, however, the... 

A very large number of volatile substances have been identified in fresh tea leaf.64 Substances present at the highest levels include the ubiquitous leaf aldehyde, trans-2-hexenal, and leaf alcohol, cis-3-hexenol. Both arise from cis-3-hexenal, which is biosynthesized from linoleic acid in leaf as a result of enzymic splitting.65... 

Zhou et al. obtained nitrogen-doped titanium dioxide replicas via a two-step infiltration process with natural leaves as templates [220]. The replicas inherited the hierarchical structures of the natural leaf at the macro-, micro-, and nanoscales. These materials showed enhanced light-harvesting and photocatalytic hydrogen evolution activities. The photocatalytic water splitting activity of the artificial leaf structures was eight times higher than that of titanium dioxide synthesized without templates. 

Symptoms Leaves develop a brownish-purplish tinge. A reddish band appears around leaf edges this may color the whole of the central leaf area. Growth can be patchy, individual plants becoming weak and stunted. Roots are stunted and dark brown or black in color. When the root is split open, the classic symptom is a red core running down the center. It is most noticeable in spring and fall. 

Mesophyll cells use C02 from the air to convert phospho-enolpyruvate to oxaloacetate (fig. 15.28). Oxaloacetate is reduced to malate, which then moves to the bundle sheath cells that surround the vascular structures in the interior of the leaf. Here malate is decarboxylated to pyruvate in an oxidative reaction that reduces NADP+ to NADPH. The pyruvate returns to the mesophyll cells, where it is phos-phorylated to phosphoenolpyruvate. This phosphorylation is driven by splitting of ATP to AMP and pyrophosphate and subsequent hydrolysis of the pyrophosphate to phosphate. 

If there are more protons involved, the splitting process continues. Here is the NMR spectrum of a famous perfumery compound supposed to have the smell of green leaf lilac . The compound is an acetal with five nearly identical aromatic protons at the normal benzene position (7-2-7.3 p.p.m.) and six protons on two identical OMe groups. 

Leaves with water-soaked or papery, white spots with vertical splits. Cause Onion leaf blight. Leaf tips turn yellow, then brown. Spray plants with sulfur as soon as you see symptoms if weather is cool and humid. Prevent problems by planting tolerant cultivars such as Tokyo Long White . 

The data show that SSHB increased the root dry matter in the same way it did in the other experiments. Simultaneously, we observed an increase in leaf length and leaf area which corresponded with an increase in invertase activity. The higher enzyme activity appeared to be the key to the whole problem. It is well known that acid invertase splits the disaccharide sucrose so that the two monosaccharides formed from it can become building stones for additional leaf substances. That is, glucose is recycled through the Embden-Meyerhof-Parnas pathway. Likewise, fructose is readily available for conversion into fructose 1,6-diphosphate. Subsequently, more leaf area arises which is able to produce more assimilates. The consequence is an increased yield. Thus, photosynthetic efficiency increases considerably. 

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