Lead resistance, sorption and accumulation in a Paecilomyces lilacinus strain

The Lead [Pb(II)] tolerance and uptake ability of four fungal species, two from the genus Penicillium and two from the genus Talaromyces were investigated in this study. The species were isolated from a polluted tributary and identified to be closest to P. canescens, P. simplicissimum, T. macrosporus and another Talaromyces sp. via PCR targeting their internal transcribed spacer 1 and 4 sequences. All isolates have tolerances for up to 2000 µg/mL and 3000 µg/mL Pb(II) on solid and liquid medium, respective

“…T. macrosporus continues maintaining >90% R until 3000 µg/mL, with Pb(II) concentrations having no significant influence on R. Similar R values in response to Pb(II) have been seen in various fungi such as A. macropsorus with R = 88.69% in 100 µg/mL alkaline solution after 500 h (Melgar et al, 2007), S. chinenense having R = 80.6% at 100 ppm (Chen et al, 2017), and T. longibrachiatum having R = 78.84% at 100 ppm after 15 days (Adeogun et al, 2012). The removal values of P. cansescens, ranging from 12%-77% are closer to reports in A. flavus (Akar and Tunali, 2006) and P. lilacinus (Zucconi et al, 2003).…”

“…Both Penicillium isolates show elevated tolerance indices (TI>1) 1-2 days post inoculation, while Talaromyces isolates are relatively slow growing, reaching TI = 1 at day 15 for almost all concentrations. These are very high survival rates, comparable to some of the highest recorded Pb(II) growth tolerance, similar to P. lilacinus which can tolerate 1437 µg/mL (Zucconi et al, 2003) and Simplicissimum chinense, capable of growth at 5000 µg/mL (Chen et al, 2017) The ability of survival of fungal species in 2000 µg/mL has also been reported in A. fumigatus, P. janthanellum, P. simplicissimum, and T. asperellum (Chen et al, 2017;Iskandar et al, 2011).…”

Microbial Diversity of Emalahleni Mine Water in South Africa and Tolerance Ability of the Predominant Organism to Vanadium and Nickel

“…The microbial species have been reported to be highly resistant to heavy metals and also having a very high ability to remove heavy metals. Zucconi et al [36] stated that isolating microorganisms from extreme environments represent an appropriate practice to select metal-resistant strains that could be used for heavy metal removal and bioremediation purposes. Since most of the species of the genus Marinobacter have been reported to be halophilic, heterotrophic neutrophiles and living under extreme environmental conditions such as pH and high salinity, they have been isolated from several habitats such as seawater, petroleum refineries, oil-refineies, and so forth [37] .…”

Bioweathering of chrysotile by fungi isolated in ophiolitic sites

“…Although it has been cited in a taxonomic study (Gams & Zare, 2001), this species has been poorly characterized. Paecilomyces lilacinus is instead a ubiquitous species, which has already been isolated from heavy‐metal‐polluted soils (Zucconi et al , 2003) and has proved to be able to release a number of organic acids (Samson, 1974). Other species of the same genera are siderophore producers (Vala et al , 2000).…”