Problem Genera and Family Interfaces in the Eupyrenomycetes

Rogers, Jack D.

doi:10.1007/978-1-4757-9290-4_29

Cited by 10 publications

(4 citation statements)

References 34 publications

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“…should be referred to the Hyponectriaceae. Although both appeared in the same cluster as Xylariaceae (Barrmaelia oxyacanthae, Obolarina dryophila, Poronia punctata, Xylaria carpophila) with 96~ bootstrap support, the two genera did not form a Diatrypaceae has been accommodated in a separate order (Chadefaud, 1960;Hawksworth and Eriksson, 1986) but the possibility of affinities to Xylariaceae has been considered and discussed by Rogers (1994) and Barr (1990), and the two orders Diatrypales and Xylariales were merged by Eriksson and Winka (1997).…”

Section: Discussionmentioning

confidence: 96%

Papulosa amerospora accommodated in a new family (Papulosaceae, Sordariomycetes, Ascomycota) inferred from morphological and molecular data

Winka

Eriksson

2000

Mycoscience

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To investigate the systematic position of the unitunicate pyrenomycete Papulosa amerospora, we performed phylogenetic analyses of SSU rDNA sequences from 37 ascomycetes. Among these sequences were some new ones from taxa that might be related to Papulosa: Hyponectriaceae (Hyponectria buxi, Monographe#a niva#s), Phyllachorales (Phyllachora graminis), and Xylariales (Barrmaelia melanotes, Poronia punctata). Our results showed 100% bootstrap support for a clade of all unitunicate pyrenomycetes, the class Sordariomycetes. We also found strong support for recognizing the subclasses Hypocreomycetidae and Xylariomycetidae. The remaining taxa, belonging to subclass Sordariomycetidae, appeared as a polyphyletic group in one analysis, but was monophyletic when shorter SSU sequences were used. Barrmaelia melanotes, Poronia punctata, Hyponectria buxi, and Monographe/la nivalis are members of Xylariomycetidae, but we could not determine whether Monographella should be included in Hyponectriaceae. The new family Papulosaceae is erected for Papulosa on molecular and morphological bases, but the exact systematic position of Papulosa within subclass Sordariomycetidae is still uncertain, since the genus did not cluster consistently with any of the included taxa. Phyllachorales are not closely related to Diaporthales, as previously suggested.Key Words--Ascomycota; evolution; pyrenomycetes; systematics. Juncus roemerianusScheele is an important halophyte in salt marshes along the mid Atlantic coast of the U.S.A. Kohlmeyer and Volkmann-Kohlmeyer discovered that culms of this species were inhabited by many undescribed marine and terrestrial ascomycetes (e.g., Kohlmeyer and Volkmann-Kohlmeyer, 1993;Kohlmeyer et al., 1995;. Several species deviated from other ascomycetes in important morphological traits and were difficult to place in the ascomycete system. One such species was Papulosa amerospora Kohlm. & Volkm.-Kohlm. (Kohlmeyer and Volkmann-Kohlmeyer, 1993), a unitunicate pyrenomycete with perithecia immersed in lower parts of senescent culms and with asci having an apical amyloid ring. Lateral paraphyses line the inner surface of the Iocule, and the peridium consists of an outer layer of cells with small lumina and an inner layer of cells with larger lumina, forming a textura angularis. Kohlmeyer and Volkmann-Kohlmeyer could not place this new genus and species with certainty into any order or family. They found that a key by ML~ller and yon Arx (1973) lead to Diaporthaceae (i.e. Valsaceae) and one by Barr (1990) to Diaporthales. However, the important features of that order, as circumscribed by Barr in 1978 (e.g. pseudoparenchymatous centrum, peridium of textufa epidermoidea, non-amyloid ring in the asci, absence of paraphyses) deviated very much from Papulosa amerospora, and the genus could not be included in that order even if it was conceived wider (sensu Cannon, 1988) to include the Phyllachorales. The authors, therefore, placed the genus in the group "Unitunicate ascomycetes incertae sedis" (Eriksson and Hawksworth, 1991).We h...

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Section: Discussionmentioning

confidence: 96%

Papulosa amerospora accommodated in a new family (Papulosaceae, Sordariomycetes, Ascomycota) inferred from morphological and molecular data

Winka

Eriksson

2000

Mycoscience

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“…Barr (18) placed Ophiostoma in the Microascales and Ceratocystis in the Sordariales. This placement is not currently accepted (238), and the relationship, or lack of relationship, between the two genera is not yet resolved (460).…”

Section: Unitunicate Pyrenomycetesmentioning

confidence: 99%

Developments in Fungal Taxonomy

1999

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SUMMARY Fungal infections, especially those caused by opportunistic species, have become substantially more common in recent decades. Numerous species cause human infections, and several new human pathogens are discovered yearly. This situation has created an increasing interest in fungal taxonomy and has led to the development of new methods and approaches to fungal biosystematics which have promoted important practical advances in identification procedures. However, the significance of some data provided by the new approaches is still unclear, and results drawn from such studies may even increase nomenclatural confusion. Analyses of rRNA and rDNA sequences constitute an important complement of the morphological criteria needed to allow clinical fungi to be more easily identified and placed on a single phylogenetic tree. Most of the pathogenic fungi so far described belong to the kingdom Fungi; two belong to the kingdom Chromista. Within the Fungi, they are distributed in three phyla and in 15 orders (Pneumocystidales, Saccharomycetales, Dothideales, Sordariales, Onygenales, Eurotiales, Hypocreales, Ophiostomatales, Microascales, Tremellales, Poriales, Stereales, Agaricales, Schizophyllales, and Ustilaginales).

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“…The presence of an apical apparatus, usually bluing in iodine reagents, is considered a key character for the Xylariaceae, but exceptions are known for several genera and species currently accepted in this Hawksw., Theissenia Maubl., Thamnomyces Ehrenb., Wawelia Namysl., and some species in Anthostomella Sacc. and Hypoxylon (Rogers 1994;Ju and Rogers 1996;. Anamorphic structures in stromata and cultures have not yet been observed in many species of the Xylariaceae; others are known to sporulate only sporadically.…”

Section: Taxonomic Partmentioning

confidence: 95%

The new genus Rostrohypoxylon and two new Annulohypoxylon species from Northern Thailand

Fournier¹,

Stadler

Hyde

et al. 2010

Fungal Diversity

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An inventory of xylariaceous pyrenomycetes of Northern Thailand resulted in the discovery of a new monotypic genus, here named Rostrohypoxylon as well as two new species of Annulohypoxylon. These new taxa are introduced, fully described and compared with similar species in this paper. The new genus is recognized based on new combinations of anamorphic and teleomorphic characters. The status of these new taxa is supported by secondary metabolite profiling using high performance liquid chromatography, coupled with diode array detection and mass spectrometry (HPLC-DAD-MS).

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Problem Genera and Family Interfaces in the Eupyrenomycetes

Cited by 10 publications

References 34 publications

Papulosa amerospora accommodated in a new family (Papulosaceae, Sordariomycetes, Ascomycota) inferred from morphological and molecular data

Papulosa amerospora accommodated in a new family (Papulosaceae, Sordariomycetes, Ascomycota) inferred from morphological and molecular data

Developments in Fungal Taxonomy

The new genus Rostrohypoxylon and two new Annulohypoxylon species from Northern Thailand

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