Anabasine occurring in wild tree tobacco (Nicotiana glauca) and anabaseine occurring in certain animal venoms are nicotinic receptor agonist toxins. Anabasine lacks the imine double bond of anabaseine; the two possible enantiomers of anabasine occur in N. glauca. A comparision of the relative potencies of S- and R-anabasine has not been previously reported. We separated the enantiomers of anaba...

Large pelagic fishes are top predators inhabiting the water column of the tropical and subtropical Pacific Ocean. They are highly migratory organisms, and for Ecuadorian fisheries, they also represent important economic resources. We sampled 4 shark species, Prionace glauca, Isurus oxyrinchus, Carcharhinus falciformis and Alopias pelagicus, and 3 billfish species, Xiphias gladius, Istiophorus p...

Flowering plant density can increase number of visits and fruit set in multi-flowering plants, however this aspect has not been studied on few flower species. We studied the effects of individual floral display and plant density on the fruit production of the epiphytic, moth-pollinated orchid, Ryncholaelia glauca, in an oak forest of Chavarrillo, Veracruz, Mexico. Species is non-autogamous, and...

inhibiting subtilisin BPN'. This paper describes purification and characterization of a subtilisin inhibitor (FMSI) from foxtail millet grain. Protein was measured by the method of Lowry et al.2) using bovine serum albumin as a standard. Protein concentrations of enzyme solutions were measured spectrophotometrically with extinction coefficients as described previously.3) The concentration of St...

Background: The use of allelopathic plant extracts as herbicide is being popularized in recent years. Objective: This research has been conducted to evaluate the allelopathic potential of caltrop (Tribulus terrestris L.) on seed germination and growth of Avena fatua L., Chenopodium album L., Setaria viridis L. and Amaranthus retroflexus L. Methods: This research was done to evalature the ef...

Broomcorn and foxtail millet are the only major domesticated plants indigenous to prehistoric Eurasia rely on C4photosynthetic pathway. Here we study impact of animal manure (AM) broomcorn (Panicum miliaceum) (Setaria italica), grown in Askov Long-Term Experiment, using unmanured soil dressed with phosphorus plus potassium (PK) as reference treatments. Animal had a marked effect yields δ15N val...

In the present study, antioxidant activity of methanolic extracts of the leaves of seven Egyptian Cassia species was investigated using two methods, the phosphomolyb-date method and 1,1 diphenyl-2-picrylhydrazyl radical (DPPH) scavenging activity method.· The results revealed that C. glauca is the most potent species and that the activity of other plant species decreases in the following order:...

In the present study, an extensive in vitro antimicrobial profiling was performed for three medicinal plants grown in Cuba, namely Simarouba glauca, Melaleuca leucadendron and Artemisia absinthium. Ethanol extracts were tested for their antiprotozoal potential against Trypanosoma b. brucei, Trypanosoma cruzi, Leishmania infantum and Plasmodium falciparum. Antifungal activities were evaluated ag...