Estudio taxonómico (morfológico y molecular) de especies del género chaetomium y géneros afines.
The species included in Chaetomium and Achaetomium (Chaetomiaceae, Ascomycota) are morphological and molecularly studied. Particularly three species-groups belong to Chaetomium genus: Chaetomium bostrychodes --species-group; Chaetomium globosum - species group and Chaetomium indicum - species group....
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| Format: | doctoral thesis |
| Status: | Published version |
| Publication Date: | 2003 |
| Country: | España |
| Institution: | CBUC, CESCA |
| Repository: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/8700 |
| Online Access: | http://www.tdx.cat/TDX-0625103-172550 http://hdl.handle.net/10803/8700 |
| Access Level: | Open access |
| Keyword: | taxonomía hongos 00 61 |
| Summary: | The species included in Chaetomium and Achaetomium (Chaetomiaceae, Ascomycota) are morphological and molecularly studied. Particularly three species-groups belong to Chaetomium genus: Chaetomium bostrychodes --species-group; Chaetomium globosum - species group and Chaetomium indicum - species group. Chaetomium macrostiolatum sp. nov, Chaetomium olivocolor sp. nov, Chaetomium tarraconensis sp. nov and Achaetomium geophylum sp. nov. are described and illustrated. The first species is characterized by ascomata with a very broad ostiole and yellow hairs, and limoniform ascospores; the second by its thermotolerant growth, inconspicuous and short straight ascomatal hairs and fusiform ascospores; the third by its unusual, irregularly-shaped ascospores and subglobose ascomata with flexuous to undulate, unbranched ascomatal hairs and the last by its thermotolerance, and the opaque, big, limoniform ascospores. The combinations Achaetomium irregulare (Sörgel) K. Rodríguez, comb. nov. is proposed and Chaetomium dolichotrichum is accepted who valid species. Analysis of the D1 and D2 regions of the LSU rDNA supported these proposal. Phylogenetic relationships among the species are presented. D1 and D2 regions of the 28S rADN gene are very conserved (80-90 %).<br/>Título: "Estudio taxonómico (morfológico y molecular) de especies del género Chaetomium y géneros afines. |
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