Xylariales

Xylariales

Taxobox
name = Xylariales



image_caption = "Xylaria hypoxylon"
regnum = Fungi
divisio = Ascomycota
classis = Sordariomycetes
subclassis = Xylariomycetidae
subclassis_authority = O.E.Erikss. & Winka, 1997
ordo = Xylariales
ordo_authority = Nannf., 1932
subdivision_ranks = Families
subdivision =
Amphisphaeriaceae

Clypeosphaeriaceae

Diatrypaceae

Graphostromataceae

Hyponectriaceae

Xylariaceae

Genera incertae sedis:
"Adomia"
"Diamantinia"
"Lasiobertia"
"Palmicola"
"Pulmosphaeria"
"Yuea"

Xylariales is an order of fungi within the class Sordariomycetes (also known as Pyrenomycetes), subphylum Pezizomycotina, phylum Ascomycota. It is the only order of the subclass Xylariomycetidae.

Xylariales Nannf., Nova Acta Reg. Soc. Sci. Upsal. Ser. IV. 8(2): 66 (1932) is characterised by the possession of well-developed stromata, perithecial ascomata that are mainly globose, superficial or immersed in a stroma, cylindrical asci with amyloid apical apparatus ranging in form from a simple disk to complex ring systems, typically brown ascospores with germ pores or slits, and hyphomycetous holoblastic anamorphs (Table 1.1) (Barr, 1990; Whalley, 1996; Thienhirun & Whalley, 2004). Members of this Order are mostly wood inhabitants but they also occur on animal dung, fruits, leaves, litter, seeds, soil or are associated with insects (Rogers, 1979, 1985, 2000; Whalley, 1985). Their distribution, although cosmopolitan, is very well represented in tropical host plants and many occur as endophytes (Petrini & Petrini, 1985; Davis et al., 2003; Thienhirun & Whalley, 2004).

Nannfeldt (1932) was the first taxonomist to provide a well-defined classification system for taxonomy. He included six families within the Xylariales — the Diatrypaceae, Hypocreaceae, Hyponectriaceae, Lasiosphaeriaceae, Polystigmataceae (Phyllachoraceae) and Xylariaceae, with the last family designated as the type family. Since the work of Nannfeldt (1932), there have been different views regarding the placement of families within the Xylariales, mainly due to emphasis of different morphological and developmental characters (Miller, 1949; Gäumann, 1952). Luttrell (1951) restricted the Xylariales to those taxa with a Xylaria-type centrum and provided a broad definition of the Order. He included six families, the Chaetomiaceae, Clavicipitaceae, Diatrypaceae, Phyllachoraceae, Pyrenulaceae, and Xylariaceae. Later, Wehmeyer (1975) provided a much clearer definition of Xylariaceae which was more in line with current concepts. Unfortunately, delimitation of families within Xylariales was still far from the current classification scheme. Barr (1990), in her Prodomus to nonlichenized pyrenomycetous members of Class Hymenoascomycetes, provided a very broad concept of the Xylariales, accepting 11 families — the Acrospermaceae, Amphisphaeriaceae, Boliniaceae, Clypeosphaeriaceae, Diatrypaceae, Hyponectriaceae, Melogrammataceae, Phyllachoraceae, Thyridiaceae, Trichosphaeriacae and Xylariaceae.

Since the introduction of molecular systematics, phylogenetically unrelated families were gradually removed from Xylariales to their respective Orders. However, there has been little progress for the delimitation of families in the 1990s since none of the molecular studies have focused on Xylariales (Berbee & Taylor, 1992; Rehner & Samuels, 1995; Spatafora et al., 1998). It was not until Kang et al. (1998, 1999a,b,c,d, 2002) and Jeewon (2002), focused on Amphisphaeriaceae and the related families, the phylogeny of Xylariales has been effectively reviewed. The recent study conducted by Smith et al. (2003) shown that Xylariales consists of seven families: Amphisphaeriaceae, Apiosporaceae, Clypeosphaeriaceae, Diatrypaceae, Graphostomataceae, Hyponectriaceae and Xylariaceae.


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Look at other dictionaries:

  • Xylariales — Geweihförmige Holzkeule (Xylaria hypoxylon) Systematik Reich: Pilze (Fungi) Abteilung …   Deutsch Wikipedia

  • Xylariales — Xylariales,   Ordnung der Schlauchpilze mit zwei bekannten einheimischen Arten: die auf alten Laubholzstümpfen wachsende, häufig vorkommende Geweihförmige Holzkeule (Xylaria hypoxylon), deren Fruchtkörper 5 7 cm hoch werden und geweihartig… …   Universal-Lexikon

  • Xylariales — El estilo de esta traducción aún no ha sido revisado por terceros. Si eres hispanohablante nativo y no has participado en esta traducción puedes colaborar revisando y adaptando el estilo de ésta u otras traducciones ya acabadas …   Wikipedia Español

  • Xylariales — Xylariales …   Wikipédia en Français

  • Xylariomycetidae — Xylariales Xylariales …   Wikipédia en Français

  • Xylariomycetidae — Xylariales Geweihförmige Holzkeule (Xylaria hypoxylon) Systematik Reich: Pilze (Fungi) …   Deutsch Wikipedia

  • Sordariomycetes — Beauveria bassiana auf Heuschrecken Systematik Domäne: Eukaryoten (Eucaryota) ohne Rang: Opisthokonta …   Deutsch Wikipedia

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  • Diamantinia — Scientific classification Kingdom: Fungi Division: Ascomycota Class: Sordariomycetes …   Wikipedia

  • Diatrypaceae — Diatrypella quercina Scientific classification Kingdom: Fungi …   Wikipedia

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