| In vitro: |
| Fungal Biol. 2011 Apr-May;115(4-5):401-5. | | Chemical taxonomy of Torrubiella s. lat.: zeorin as a marker of Conoideocrella.[Pubmed: 21530922] | The insect pathogens in the genus Torrubiella s. lat. were recently divided into new genera based on molecular phylogenetic characters.
METHODS AND RESULTS:
Isolates collected at various locations in Thailand, were tested for their productivity of a hopane-type triterpene, Zeorin (6α,22-dihydroxyhopane), when cultured in potato dextrose broth under static conditions. Among the 49 strains of Torrubiella s. lat. species, Conoideocrella luteorostrata (ten strains) and C. tenuis (seven strains), all collected on scale insects (Hemiptera), produced Zeorin, whereas another six strains of Orbiocrella petchii (which was recently removed from Torrubiella) failed in the detection of this secondary metabolite. All other Torrubiella s. lat. (26 strains), collected on other insect hosts including leafhoppers (eight strains), Lepidoptera (one strain), and spiders (17 strains), produced no detectable Zeorin. Paecilomyces cinnamomeus (nine strains), the anamorph of C. luteorostrata, also produced Zeorin.
CONCLUSIONS:
These results correspond with the recent taxonomic reclassification based on multigene phylogeny. | | African journal of microbiology research.2010 Apr; 4:885-890. | | Antimicrobial activity of the lichen Lecanora frustulosa and Parmeliopsis hyperopta and their divaricatic acid and zeorin constituents.[Reference: WebLink] |
METHODS AND RESULTS:
Antibacterial and antifungal activity of the acetone, methanol and aqueous extracts of the lichen Lecanora frustulosa and Parmeliopsis hyperopta and their divaricatic acid and Zeorin constituents has been screened in vitro against the following species of microorganisms: Bacillus mycoides, Bacillus subtilis, Staphylococcus aureus, Enterobacter cloaceae, Escerichia coli, Klebsiella pneumoniae, Aspergillus flavus, Aspergillus fumigatus, Botrytis cinerea, Candida albicans, Fusarium oxysporum, Mucor mucedo, Paecilomyces variotii, Penicillium purpurescens, Penicillium verrucosum and Trichoderma harsianum.Divaricatic acid and Zeorin also showed strong activity against bacteria and fungi. |
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