| biodiversity in the cladosporium herbarum complex (davidiellaceae, capnodiales), with standardisation of methods for cladosporium taxonomy and diagnostics. | the cladosporium herbarum complex comprises five species for which davidiella teleomorphs are known. cladosporium herbarum s. str. (d. tassiana), c. macrocarpum (d. macrocarpa) and c. bruhnei (d. allicina) are distinguishable by having conidia of different width, and by teleomorph characters. davidiella variabile is introduced as teleomorph of c. variabile, a homothallic species occurring on spinacia, and d. macrospora is known to be the teleomorph of c. iridis on iris spp. the c. herbarum compl ... | 2007 | 18490998 |
| antibacterial potential of antarctic lichens against human pathogenic gram-positive bacteria. | extracts from five antarctic lichens (l3, stereocaulon alpinum; l5, ramalina terebrata; l6, caloplaca sp.; l8, lecanora sp.; and l17, caloplaca regalis) were tested for antimicrobial activities against several clinically important microbes by disk diffusion. the minimum inhibitory concentration (mic) of each extract was determined by a broth dilution method. extracts from l3, l5, l6 and l8 were active against two gram(+) strains. b. subtilis was more sensitive to lichen extracts (except l5) than ... | 2008 | 18729247 |
| immunomodulatory effects of polar lichens on the function of macrophages in vitro. | lichen species were collected from king george island (antarctica) and were screened for their immunomodulatory effect. among the lichens tested, the methanol extract (cr-me) of caloplaca regalis showed the highest nitric oxide (no) production in murine peritoneal macrophages. therefore, this study further examined the ability of c. regalis to induce secretory and cellular responses in macrophages. macrophages were treated with various concentrations of cr-me for 18 h. the cr-me treatment induce ... | 2009 | 18612687 |
| thin layer chromatography analysis of antioxidant constituents of lichens from antarctica. | antioxidant agents against reactive oxygen species can be used for several cosmetic and medicinal applications. methanol-water (90:10 v/v) extracts of five polar lichen species--namely stereocaulon alpinum laurer (stereocaulaceae); ramalina terebrata hook and taylor (ramalinaceae); caloplaca sp. (teloschistaceae); lecanora sp. (lecanoraceae); and caloplaca regalis (vain.)zahlbr (teloschistaceae) from king george island (antarctica)--were analyzed using thin layer chromatography (tlc) followed by ... | 2008 | 18553181 |