Dothideales » Dothideaceae » Phaeocryptopus

Phaeocryptopus nudus

Phaeocryptopus nudus (Peck) Petr., Annls mycol. 36(1): 15 (1938).

           Index Fungorum number: IF 272508; Facesoffungi number: FoF 00087,    Fig. 1

Description: see Thambugala et al. (2014).

Material considered: see Thambugala et al. (2014).

 

 

Fig. 1 Phaeocryptopus nudus (F67760, holotype, modified from Fig. 8 in Thambugala et al. 2014). a, b Herbarium material. c, d Ascomata on the host surface. e, f Asci. g–i Ascospores. Scale bars: c = 1000 μm, d = 100 μm, e, f = 20 μm, g–i = 10 μm.

Importance and distribution

Phaeocryptopus comprises six epithets. One species P. nudus has been synonymized and transferred to Nothophaeocryptopus. Phaeocryptopus is pathogenic causing disease of conifer needles such as Abies fargesii (Pinaceae), Araucaria araucana (Araucariaceae), Fitzroya cupressoides (Cupressaceae), Picea pungens (Pinaceae), Pinus (Pinaceae), Podocarpus (Podocarpaceae), Pseudotsuga macrocarpa (Pinaceae), Thujopsis (Pinaceae) and Tsuga canadensis (Pinaceae). Phaeocryptopus has a wide geographical distribution including Asia (China), Australia, Europe (England, France, Germany), New Zealand and The United States (California).

 

Quarantine significance

Phaeocryptopus is of quarantine importance as it is the causal agent of Douglas-fir needles blight and is listed in the database of plant diseases in Japan (Stone et al. 2008).

 

Biochemical importance of the genus, chemical diversity or applications

Phaeocryptopus produces several chemicals such as five isocoumarins (1-5) (Green 2016).

 

References

Barr ME. 1987 – Prodomus to class Loculoascomycetes. Publ. by the author, Amherst.

Butin H. 1970 – Zwei neue arten der gattung phaeocryptopus naumov. Journal of phytopathology 68, 269–275.

Farr ML. 1984 – The didymosporous dimeriaceous fungi reported on leaves of Rubiaceae. Mycologia 76, 793–803.

Green 2016 – Characterization of Secondary Metabolites Produced by Foliar Endophytes of Red and Black Spruce. [Master Thesis]. Carleton University. Available at: https://curve.carleton.ca/88677288-1de1-43dc-8428-d781b91b7070

Hongsanan S, Hyde KD, Phookamsak R, Wanasinghe DN et al. 2020a – Refined families of Dothideomycetes: Dothideomycetidae and Pleosporomycetidae. Mycosphere 11,1553–2107.

Müller E, von Arx JA. 1950 – Einige aspekte zur systematic pseudopharilaler ascomyceten. Berichte der Schweizerischen Botanischen Gesellschaft 60, 329–397.

Naumov MN. 1914 – Travaux de l’Institut de pathologie végétale de Saint-Pétersbourg. Bulletin de la Société mycologique de France 30, 423–432.

Petrak F. 1938 – Beiträge zur systematik und phylogenie der gattung Phaeocryptopus naoumov. Annales Mycologici 36, 9–26.

Petrak F. 1962 – Mykologische bemerkungen. Sydowia 15(1–6), 204–217.

Saccardo PA (1925–1928) Sylloge Fungorum XXIV. 542

Schoch CL, Crous PW, Groenewald JZ, Boehm EWA et al. 2009 – A class-wide phylogenetic assessment of Dothideomycetes. Studies in Mycology 64, 1–15.

Stone J, Capitano B, Kerrigan J. 2008 – The histopathology of Phaeocryptopus gaeumannii on Douglas-fir needles. Mycologia 100, 431–444.

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

von Arx JA, Müller E. 1954 – Die Gattungen der amerosporen Pyrenomyceten. Beitr Kryptogamenf Schweiz 11, 1–434

Winton LM, Stone JK, Hansen EM, Shoemaker RA. 2007 – The systematic position of Phaeocryptopus gaeumannii. Mycologia 99, 240–252.

 

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