A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states
Xerophilic fungi grow at low water activity or low equilibrium relative humidity and are an important part of the indoor fungal community, of which Aspergillus is one of the dominant genera. A survey of xerophilic fungi isolated from Canadian and Hawaiian house dust resulted in the isolation of 1039...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2017-01-01
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| Series: | MycoKeys |
| Online Access: | http://mycokeys.pensoft.net/articles.php?id=11161 |
| _version_ | 1828895525605212160 |
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| author | Cobus M. Visagie Neriman Yilmaz Justin B. Renaud Mark W. Sumarah Vit Hubka Jens C. Frisvad Amanda J. Chen Martin Meijer Keith A. Seifert |
| author_facet | Cobus M. Visagie Neriman Yilmaz Justin B. Renaud Mark W. Sumarah Vit Hubka Jens C. Frisvad Amanda J. Chen Martin Meijer Keith A. Seifert |
| author_sort | Cobus M. Visagie |
| collection | DOAJ |
| description | Xerophilic fungi grow at low water activity or low equilibrium relative humidity and are an important part of the indoor fungal community, of which Aspergillus is one of the dominant genera. A survey of xerophilic fungi isolated from Canadian and Hawaiian house dust resulted in the isolation of 1039 strains; 296 strains belong to Aspergillus and represented 37 species. Reference sequences were generated for all species and deposited in GenBank. Aspergillus sect. Aspergillus (formerly called Eurotium) was one of the most predominant groups from house dust with nine species identified. Additional cultures deposited as Eurotium were received from the Canadian Collection of Fungal Cultures and were also re-identified during this study. Among all strains, two species were found to be new and are introduced here as A. mallochii and A. megasporus. Phylogenetic comparisons with other species of section Aspergillus were made using sequences of ITS, β-tubulin, calmodulin and RNA polymerase II second largest subunit. Morphological observations were made from cultures grown under standardized conditions. Aspergillus mallochii does not grow at 37 °C and produces roughened ascospores with incomplete equatorial furrows. Aspergillus megasporus produces large conidia (up to 12 µm diam) and roughened ascospores with equatorial furrows. Echinulin, quinolactacin A1 & A2, preechinulin and neoechinulin A & B were detected as major extrolites of A. megasporus, while neoechinulin A & B and isoechinulin A, B & C were the major extrolites from A. mallochii. |
| first_indexed | 2024-12-13T14:28:05Z |
| format | Article |
| id | doaj.art-46422085e48f479e9048fa09be0c7b8c |
| institution | Directory Open Access Journal |
| issn | 1314-4057 1314-4049 |
| language | English |
| last_indexed | 2024-12-13T14:28:05Z |
| publishDate | 2017-01-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | MycoKeys |
| spelling | doaj.art-46422085e48f479e9048fa09be0c7b8c2022-12-21T23:41:53ZengPensoft PublishersMycoKeys1314-40571314-40492017-01-011913010.3897/mycokeys.19.1116111161A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual statesCobus M. Visagie0Neriman Yilmaz1Justin B. Renaud2Mark W. Sumarah3Vit Hubka4Jens C. Frisvad5Amanda J. Chen6Martin Meijer7Keith A. Seifert8Biodiversity (Mycology), Agriculture and Agri-Food CanadaBiodiversity (Mycology), Agriculture and Agri-Food CanadaLondon Research & Development Centre, Agriculture & Agri-Food CanadaLondon Research & Development Centre, Agriculture & Agri-Food CanadaCharles UniversityTechnical University of DenmarkApplied and Industrial Mycology, CBS-KNAW Fungal Biodiversity CentreApplied and Industrial Mycology, CBS-KNAW Fungal Biodiversity CentreUniversity of OttawaXerophilic fungi grow at low water activity or low equilibrium relative humidity and are an important part of the indoor fungal community, of which Aspergillus is one of the dominant genera. A survey of xerophilic fungi isolated from Canadian and Hawaiian house dust resulted in the isolation of 1039 strains; 296 strains belong to Aspergillus and represented 37 species. Reference sequences were generated for all species and deposited in GenBank. Aspergillus sect. Aspergillus (formerly called Eurotium) was one of the most predominant groups from house dust with nine species identified. Additional cultures deposited as Eurotium were received from the Canadian Collection of Fungal Cultures and were also re-identified during this study. Among all strains, two species were found to be new and are introduced here as A. mallochii and A. megasporus. Phylogenetic comparisons with other species of section Aspergillus were made using sequences of ITS, β-tubulin, calmodulin and RNA polymerase II second largest subunit. Morphological observations were made from cultures grown under standardized conditions. Aspergillus mallochii does not grow at 37 °C and produces roughened ascospores with incomplete equatorial furrows. Aspergillus megasporus produces large conidia (up to 12 µm diam) and roughened ascospores with equatorial furrows. Echinulin, quinolactacin A1 & A2, preechinulin and neoechinulin A & B were detected as major extrolites of A. megasporus, while neoechinulin A & B and isoechinulin A, B & C were the major extrolites from A. mallochii.http://mycokeys.pensoft.net/articles.php?id=11161 |
| spellingShingle | Cobus M. Visagie Neriman Yilmaz Justin B. Renaud Mark W. Sumarah Vit Hubka Jens C. Frisvad Amanda J. Chen Martin Meijer Keith A. Seifert A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states MycoKeys |
| title | A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states |
| title_full | A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states |
| title_fullStr | A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states |
| title_full_unstemmed | A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states |
| title_short | A survey of xerophilic Aspergillus from indoor environment, including descriptions of two new section Aspergillus species producing eurotium-like sexual states |
| title_sort | survey of xerophilic aspergillus from indoor environment including descriptions of two new section aspergillus species producing eurotium like sexual states |
| url | http://mycokeys.pensoft.net/articles.php?id=11161 |
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