Dothideales » Dothideaceae » Sydowia

Sydowia gregaria

Sydowia gregaria Bres., Hedwigia 34(Beibl.): (66) (1895).

           Index Fungorum number: IF 242369; Facesoffungi number: FoF 00094,    Fig. 1

Description: see Sivanesan (1984); Thambugala et al. (2014).

Material considered: see Sivanesan (1984); Thambugala et al. (2014).

Fig. 1 Sydowia gregaria (S-F6473, holotype). a Herbarium material. b, c Ascostromata on host surface. d Section through ascostromata. e Peridium. f Pseudoparaphyses. g, h Asci. i–l Ascospores. Scale bars: d, e = 100 μm, f = 10 μm, g, h = 50 μm, i–l = 5 μm.

Importance and distribution

Species of Sydowia are saprobic and help in decomposition of organic matter in the ecosystem. There are 18 Sydowia epithets in Index Fungorum (2022), but several species have been transferred to other genera such as Dothiora and Pseudosydowia. Sydowia comprises 11 species known on a wide range of plants such as Abies (Pinaceae), Cryptomeria japonica (Taxodiaceae), Eucalyptus sp. (Myrtaceae), Jasminum calophyllum (Oleaceae), Picea abies (Pinaceae), Prosopis juliflora (Fabaceae), Prunus sp. (Rosaceae), Randia dumetorum (Rubiaceae), Shepherdia canadensis (Elaeagnaceae) and Thuja plicata (Cupressaceae). Sydowia is reported from several countries such as Asia (India, Japan, Pakistan), Australia, Europe (Germany, Netherlands, Ukraine), North America (Canada), South Africa and the United States.

 

References

Barr ME. 1972 – Preliminary studies on the Dothideales in temperate North America. Contributions from the University of Michigan Herbarium 9, 523–638.

Barr ME. 2001 – Revisionary studies on the Dothioraceae. Harvard Papers in Botany 6, 25–34.

Bills GF, Collado J, Ruibal C, Peláez F, Platas G. 2004 – Hormonema carpetanum sp. nov., a new lineage of dothideaceous black yeasts from Spain. Studies in Mycology 50,149–157.

Butin H. 1964 – Überzwei Nebenfruchtformen von Sydowia polyspora (Gref.et v. Tav.) Müller. Sydowia 17, 114–118.

Cheewangkoon R, Groenewald JZ, Summerell BA, Hyde KD et al. 2009 – Myrtaceae, a cache of fungal biodiversity. Persoonia 23, 55–85.

Hyde KD, Jones EBG, Liu JK, Ariyawansa H et al. 2013 – Families of Dothideomycetes. Fungal Diversity 63, 1–313.

Luttrell ES. 1973 – Loculoascomycetes. In: Ainsworth GC, Sparrow FK, Sussman AS (eds) The fungi, an advanced treatise, a taxonomic review with keys: ascomycetes and fungi imperfecti. Academic, New York.

Schoch CL, Shoemaker RA, Seifert KA, Hambleton S, Spatafora JW, Crous PW. 2006 – A multigene phylogeny of the Dothideomycetes using four nuclear loci. Mycologia 98, 1041–1052.

Sivanesan A. 1984 – The bitunicate ascomycetes and their anamorphs. J Cramer.

Thambugala K, Ariyawansa H, Li Y, Boonmee S et al. 2014 – Dothideales. Fungal diversity 68, 105–158.

von Arx JA, Müller E 1975 – A re-evaluation of the bitunicate Ascomycetes with keys to families and genera. Studies in Mycology 9, 1–159.

Wijayawardene DNN, McKenzie EHC, Hyde KD. 2012 – Towards incorporating anamorphic fungi in a natural classification—checklist and notes for 2011. Mycosphere 3,157–228.

 

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