Plant Genus

In the course of detailed studies on the chemical constituents of rutaceous plants, genus Xanthoxylum, known to contain the antitumor benzophen-anthridine alkaloids, Ishii et al. (167-173) have isolated four seco amide alkaloids arnottianamide (206), iwamide (207), integriamide (208), and isoarnottianamide (209). Sharma et al. (174) have also found arnottianamide (206) in Toddia Asiatica. 

Pecacuanha (active ingredient is a mixture of alkaloids), used for treating dysentery, was obtained from the bark/roots of the plant genus Cephaelis. 

No Plant family name Plant genus and species name YCp50 Galactose RAD52 Galactose RAD52 Glucose... 

Pilocarpine (30) is one of a series of related alkaloids found in the South American plant genus Pilocarpus, known commonly as Jaborandi leaf, which was used in traditional medicine to induce sweating and urination. The molecular structure of (30) bears similarities to ACh (2) since the positively-charged N-atom and the lactone binding to the serine are about the same distance apart. Chewing the leaf results in typical features... 

Dr. Spackman Several different, coalified, cell wall products have been described. In some instances the source walls were anatomically similar, and similar coalified products resulted. In other cases, the source walls were anatomically distinct and each type yielded a distinct coalified product. Moreover, the walls of each cell type seemed to respond consistently to coalification. When the walls of a particular cell type were compared with their analogs in coalified wood of a different plant genus, sometimes the products were similar, but instances were observed in which the coaly products were quite dissimilar. The latter was inferred to reflect an initial and heretofore, unrecognized difference in the nature of the source materials involved. 

Archeological records chronicle the ancient association of man with the plant genus Cannabis, of the plant family Cannabaceae. The use of cannabis fibers for the production of hemp has been dated to 4000 b.c. using carbon-14 methods. Seeds and pollen of the plant have been found in tombs, their leaves painted on funerary urns. The plant has been so well cultivated that a wild variant no longer exists. 

Further analysis of the UV spectrum revealed that this compound is a gallic acid derivative. A search of the Dictionary of Natural Products for molecular ion and plant genus name leads to the identification of a known compound - Pterocaryanin B. The compounds with poly-hydroxyl groups in their structures are very well known as tyrosinase inhibitors and are responsible for the inhibition of melanin synthesis. Therefore, no further isolation was necessary. 

Differences between C3 and C4 Plants The plant genus Atriplex includes some C3 and some C4 species. From the data in the plots below (species 1, upper curve species 2, lower curve), identify which is a C3 plant and which is a C4 plant. Justify your answer in molecular terms that account for the data in all three plots. 

The tea tree, or sometimes ti-tree, is actually a general name for members of the Melaleuca plant genus. The term tea tree comes from local usage as a type of herbal tea prepared from the leaves. Melaleuca alternifolia is a worldwide top-selling essential oil. Other oils from this family include cajeput (Melaleuca cajeputi) and niaouli (Melaleuca viridiflora), which are distinctive essential oils with their own characteristics. 

By way of example, you can quickly find from the Plant Genus Index what has been found in Coffea arabica (family Rubiaceae) (coffee), the entry being ... 

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