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Author (up) Romero, C.D.; Chopin, S.F.; Buck, G.; Martinez, E.; Garcia, M.; Bixby, L. file  url
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  Title Antibacterial properties of common herbal remedies of the southwest Type Journal Article
  Year 2005 Publication Journal of Ethnopharmacology Abbreviated Journal J Ethnopharmacol  
  Volume 99 Issue 2 Pages 253-257  
  Keywords Anti-Bacterial Agents/administration & dosage/*pharmacology/therapeutic use; Gram-Negative Bacteria/*drug effects; Gram-Positive Bacteria/*drug effects; Humans; Medicine, Traditional; Microbial Sensitivity Tests; *Phytotherapy; Plant Components, Aerial; Plant Extracts/administration & dosage/*pharmacology/therapeutic use; Plant Roots; *Plants, Medicinal; Texas  
  Abstract Curanderismo, widely practiced in the southwest, is an alternative medical system that has been neglected by scientific research. This project analyzed the antibiotic properties of 23 common herbal remedies used in South Texas to treat wounds and infections. Ethanolic tinctures and aqueous extracts of each plant were prepared and applied to blank diffusion disks. These disks were desiccated and used in Kirby-Bauer disk diffusion susceptibility tests on three bacteria: Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. Control disks contained solvent only. The efficacy of the tinctures and aqueous extracts was compared to that of commercially prepared antibiotic diffusion disks. No inhibition was observed with the aqueous extracts. The various tincture-saturated disks produced zones of clearance ranging from 1 to 5 mm. Ten plants consistently inhibited bacterial growth of Staphylococcus aureus. None of the plants tested produced consistent inhibition of the two Gram-negative species, Pseudomonas aeruginosa and Escherichia coli. No zones of clearance were produced by the solvent-only control disks. The zones of clearance produced by commercial antibiotics were, on average, larger and more uniform than those produced by the tincture disks. Thus, it appears that some of the herbal remedies used in folk medicine are potentially effective antibacterial agents against Staphylococcus aureus.  
  Call Number Serial 1529  
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Author (up) Suryanarayanan, T.S.; Wittlinger, S.K.; Faeth, S.H. file  url
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  Title Endophytic fungi associated with cacti in Arizona Type Journal Article
  Year 2005 Publication Mycological Research Abbreviated Journal Mycol Res  
  Volume 109 Issue Pt 5 Pages 635-639  
  Keywords Agriculture; Arizona; Cactaceae/*microbiology; Fungi/*isolation & purification; Plant Components, Aerial/microbiology; Species Specificity  
  Abstract 21 cactus species occurring in various localities within Arizona were screened for the presence of fungal endophytes. 900 endophyte isolates belonging to 22 fungal species were isolated. Cylindropuntia fulgida had the maximum endophyte species diversity, while C. ramosissima harboured the maximum number of endophyte isolates. Alternaria sp., Aureobasidium pullulans, and Phoma spp. were isolated from several cactus species. The diversity of the endophyte assemblages was low and no host specificity among endophytes was observed. However, the frequencies of colonization of the few endophyte species recovered were high and comparable to those reported for tropical plant hosts. Species of Colletotrichum, Phomopsis, and Phyllosticta, which are commonly isolated as endophytes from plants of more mesic habitats, were absent from these cacti.  
  Call Number Serial 1619  
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