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- 저자 : Luangsa-ard, J. Jennifer (검색결과 4 건)
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Phallus chiangmaiensis sp. nov. and a Record of P. merulinus in Thailand
( Sujinda Sommai ),( Phongsawat Khamsuntorn ),( Sayanh Somrithipol ),( Janet Jennifer Luangsa-ard ),( Umpawa Pinruan ) 한국균학회 2021 Mycobiology Vol.49 No.5
During the rainy season in Thailand, specimens of Phallus chiangmaiensis sp. nov. and P. merulinus were collected from Chiang Mai and Samut Sakhon Provinces, respectively. Molecular phylogenetic analyses based on sequences of the nuclear ribosomal large subunit (LSU), nuclear ribosomal 5.8S gene including the internal transcribed spacer regions 1 and 2 (ITS), and the protein-coding gene atp6 (mitochondrial adenosine triphosphate [ATP] synthase subunit 6) support the placement of the new species within Phallus. Phallus chiangmaiensis has a well-developed white indusium and campanulated caps with reticulate surfaces. It differs morphologically from the related species, as supported by the phylogenetic data. Phallus merulinus is reported here as a species that was re-encountered in Thailand. The descriptions of the species are accompanied by illustrations of macro- and micro- morphological features, and a discussion of the related taxa is presented.
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Phylogeny and systematics of the anamorphic, entomopathogenic genus Beauveria.
Rehner, Stephen A,Minnis, Andrew M,Sung, Gi-Ho,Luangsa-ard, J Jennifer,Devotto, Luis,Humber, Richard A New York Botanical Garden 2011 Mycologia Vol.103 No.5
<P>Beauveria is a cosmopolitan anamorphic genus of arthropod pathogens that includes the agronomically important species, B. bassiana and B. brongniartii, which are used as mycoinsecticides for the biological control of pest insects. Recent phylogenetic evidence demonstrates that Beauveria is monophyletic within the Cordycipitaceae (Hypocreales), and both B. bassiana and B. brongniartii have been linked developmentally and phylogenetically to Cordyceps species. Despite recent interest in the genetic diversity and molecular ecology of Beauveria, particularly as it relates to their role as pathogens of insects in natural and agricultural environments, the genus has not received critical taxonomic review for several decades. A multilocus phylogeny of Beauveria based on partial sequences of RPB1, RPB2, TEF and the nuclear intergenic region, Bloc, is presented and used to assess diversity within the genus and to evaluate species concepts and their taxonomic status. B. bassiana and B. brongniartii, both which represent species complexes and which heretofore have lacked type specimens, are redescribed and types are proposed. In addition six new species are described including B. varroae and B. kipukae, which form a biphyletic, morphologically cryptic sister lineage to B. bassiana, B. pseudobassiana, which also is morphologically similar to but phylogenetically distant from B. bassiana, B. asiatica and B. australis, which are sister lineages to B. brongniartii, and B. sungii, an Asian species that is linked to an undetermined species of Cordyceps. The combination B. amorpha is validly published and an epitype is designated.</P>
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Phylogenetic classification of <i>Cordyceps</i> and the clavicipitaceous fungi
Sung, Gi-Ho,Hywel-Jones, Nigel L.,Sung, Jae-Mo,Luangsa-ard, J. Jennifer,Shrestha, Bhushan,Spatafora, Joseph W. CBS PUBLICATIONS 2007 STUDIES IN MYCOLOGY Vol.- No.57
<P><I>Cordyceps</I>, comprising over 400 species, was historically classified in the <I>Clavicipitaceae</I>, based on cylindrical asci, thickened ascus apices and filiform ascospores, which often disarticulate into part-spores. <I>Cordyceps</I> was characterized by the production of well-developed often stipitate stromata and an ecology as a pathogen of arthropods and <I>Elaphomyces</I> with infrageneric classifications emphasizing arrangement of perithecia, ascospore morphology and host affiliation. To refine the classification of <I>Cordyceps</I> and the <I>Clavicipitaceae</I>, the phylogenetic relationships of 162 taxa were estimated based on analyses consisting of five to seven loci, including the nuclear ribosomal small and large subunits (<I>nrSSU</I> and <I>nrLSU</I>), the elongation factor 1α (<I>tef1</I>), the largest and the second largest subunits of RNA polymerase II (<I>rpb1</I> and <I>rpb2</I>), β-tubulin (<I>tub</I>), and mitochondrial ATP6 (<I>atp6</I>). Our results strongly support the existence of three clavicipitaceous clades and reject the monophyly of both <I>Cordyceps</I> and <I>Clavicipitaceae</I>. Most diagnostic characters used in current classifications of <I>Cordyceps</I> (e.g., arrangement of perithecia, ascospore fragmentation, etc.) were not supported as being phylogenetically informative; the characters that were most consistent with the phylogeny were texture, pigmentation and morphology of stromata. Therefore, we revise the taxonomy of <I>Cordyceps</I> and the <I>Clavicipitaceae</I> to be consistent with the multi-gene phylogeny. The family <I>Cordycipitaceae</I> is validated based on the type of <I>Cordyceps</I>, <I>C. militaris,</I> and includes most <I>Cordyceps</I> species that possess brightly coloured, fleshy stromata. The new family <I>Ophiocordycipitaceae</I> is proposed based on <I>Ophiocordyceps</I> Petch, which we emend. The majority of species in this family produce darkly pigmented, tough to pliant stromata that often possess aperithecial apices. The new genus <I>Elaphocordyceps</I> is proposed for a subclade of the <I>Ophiocordycipitaceae</I>, which includes all species of <I>Cordyceps</I> that parasitize the fungal genus <I>Elaphomyces</I> and some closely related species that parasitize arthropods. The family <I>Clavicipitaceae</I><I>s. s.</I> is emended and includes the core clade of grass symbionts (e.g., <I>Balansia</I>, <I>Claviceps</I>, <I>Epichloë</I>, etc.), and the entomopathogenic genus <I>Hypocrella</I> and relatives. In addition, the new genus <I>Metacordyceps</I> is proposed for <I>Cordyceps</I> species that are closely related to the grass symbionts in the <I>Clavicipitaceae</I><I>s. s.</I><I>Metacordyceps</I> includes teleomorphs linked to <I>Metarhizium</I> and other closely related anamorphs. Two new species are described, and lists of accepted names for species in <I>Cordyceps</I>, <I>Elaphocordyceps</I>, <I>Metacordyceps</I> and <I>Ophiocordyceps</I> are provided.</P>
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