To evaluate the potential antimicrobial activity, Aloe vera and Opuntia ficus-indica plants were collected from Jeddah, Al Baha, Taif areas of Kingdom Saudi Arabia (SA), their ethanolic extracts screened by gas chromatography mass spectrometry (GC–MS/MS). The di(2-propylpentyl) ester hexadecenoic acid ethyl phthalic most abundant compounds in A. extract, 1-(benzyloxy)-3,5-dinitrobenzene phenol,...

Measurements of internal gas phase CO(2) concentration, stomatal resistance, and acid content were made in Crassulacean acid metabolism plants growing under natural conditions. High CO(2) concentrations, sometimes in excess of 2%, were observed during the day in a range of taxonomically widely separated plants (Opuntia ficus-indica L., Opuntia basilaris Engelm. and Bigel., Agave desertii Engelm...

The syrphid genus Meromacrus is widespread in the Neotropics, but its presence Chile has been confirmed just recently. Adults pollinate, and larvae are saprophagous of vegetal materials. In this note, we report cactorum Ricarte et al. for first time from Chile. New data on adult habitats flower visitation also provided Meromacrus. were observed flowers cacti Opuntia ficus-indica, Cumulopuntia s...