Agave tequilana Through the 1990s, diseases spread, particularly "Fusarium" fungi and "Erwinia" bacteria, exacerbated by the low genetic diversity of the agave plants. Other problems include the agave weevil, "Scyphophorus acupunctatus", and a fungus, "Thielaviopsis paradoxa". According to a 2004 study, additional pathogens, "Erwinia carotovora", "Enterobacter agglomerans", "Pseudomonas mendocina", and "Serratia" spp. are responsible for continued rot. The homoisoflavanones 5,7-dihydroxy-3-(4-methoxybenzyl)-chroman-4-one, 7-hydroxy-3-(4-hydroxybenzyl)-chroman-4-one and 4’-demethyl-3,9-dihydro-punctatin can be isolated from "A. tequilana". Agave tequilana Agave tequilana, commonly called blue agave () or tequila agave, is an agave plant that is an important economic product of Jalisco, Mexico, due to its role as the base ingredient
Agave angustifolia Agave angustifolia Agave angustifolia (Caribbean agave) is a plant which is native to Mexico and Central America. It is used to make mezcal and also as an ornamental plant, particularly the cultivar 'Marginata'. The "World Checklist of Selected Plant Families" regards "Agave angustifolia" as an illegitimate synonym for "Agave vivipara" L. Other sources maintain them as distinct species with non-overlapping native distributions (García-Mendoza and Fernando Chiang 2003). "A. angustifolia" has narrow, stiffly erect leaves with moderately-spaced spines, producing capsules, not bulibiferous; whereas "A. vivipara" is described as having shorter, recurved leaves with short-spaced spines and bulbiferous. "A. vivipara" is likely