Talaromyces sayulitensis, Acidiella bohemica and Penicillium citrinum in Brazilian oil shale by-products

Abstract

Fine shale particles and retorted shale are waste products generated during the oil shale retorting process. These by-products are small fragments of mined shale rock, are high in silicon and also contain organic matter, micronutrients, hydrocarbons and other elements. The aims of this study were to isolate and to evaluate fungal diversity present in fine shale particles and retorted shale samples collected at the Schist Industrialization Business Unit (Six)-Petrobras in São Mateus do Sul, State of Paraná, Brazil. Combining morphology and internal transcribed spacer (ITS) sequence, a total of seven fungal genera were identified, including Acidiella, Aspergillus, Cladosporium, Ochroconis, Penicillium, Talaromyces and Trichoderma. Acidiella was the most predominant genus found in the samples of fine shale particles, which are a highly acidic substrate (pH 2.4-3.6), while Talaromyces was the main genus in retorted shale (pH 5.20-6.20). Talaromyces sayulitensis was the species most frequently found in retorted shale, and Acidiella bohemica in fine shale particles. The presence of T. sayulitensis, T. diversus and T. stolli in oil shale is described herein for the first time. In conclusion, we have described for the first time a snapshot of the diversity of filamentous fungi colonizing solid oil shale by-products from the Irati Formation in Brazil.

Plants control the structure of mycorrhizal and pathogenic fungal communities in soil in a 50-year maize monoculture experiment

“…Talaromyces sayulitensis, a predominant species in the present study, had been previously identified in maize grain (Ekpakpale et al 2021), shale byproducts and household dust (de Goes et al 2017). In the present study, Talaromyces sayulitensis and other Penicillium spp.…”

Contrasting soil fungal communities at different habitats in a revegetated copper mine wasteland

“…2), Trichoderma and Penicillium are well known for the abilities of some of their members to promote plant growth (Whitelaw, 1999;Harman et al, 2004). There is increasing evidence that some species of Talaromyces play an important role in the degradation of lignocellulosic biomass and have the potential to be used as a biofertilizer (Yilmaz et al, 2014;de Goes et al, 2017), while the co-occurrence of Talaromyces and Penicillium in a wide range of habitats has long been recognized (Pitt et al, 2000). The relative abundances of the three genera at ULRT and ALRT were remarkably high as compared to those reported for black soils (Mollisols) in PR China (Liu et al, 2015), indicating that their roles in promoting plant growth may be more pronounced in hostile habitats.…”

Maize yields and carbon pools in response to poultry litter, rock phosphate and P-solubilizing microorganisms

“…To inoculate the RP + PL, microorganisms that could solubilize calcium phosphate in culture medium were chosen based on previous studies and included Rhizobium sp. (IPR1539) isolated from common bean nodules, the fungus Talaromyces sayulitensis (IPR6005) isolated from oil shale by-products (de Goes et al, 2017) and cyanobacteria (IPR7120) from a photosynthetic pond. Next, they were grown in specific media, for Rhizobium sp.…”