Diaporthales » Diaporthaceae » Diaporthe

Diaporthe foeniculina

Diaporthe foeniculina (Sacc.) Udayanga & Castl., in Udayanga, Castlebury, Rossman & Hyde, Persoonia 32: 95 (2014)

Phoma foeniculina Sacc., Michelia 2(no. 6): 95 (1880)

= Diaporthe theicola Curzi, Atti Ist. bot. R. Univ. Pavia, 3 Sér. 3: 60 (1927)

= Phomopsis theicola Curzi, Atti Ist. bot. R. Univ. Pavia, 3 Sér. 3: 65 (1927)

= Diaporthe neotheicola A.J.L. Phillips & J.M. Santos, Fungal Diversity 34: 120 (2009)

Faces of funginumber: FoF 02183

 

Saprobic or parasitic on the host plant. Sexual morph: see Udayanga et al. (2014). Asexual morph: Conidiomata 400–600 µm diam., 300650 µm high, black, solitary to gregarious or confluent, immersed, subperidermal in origin, immersed to partly erumpent at maturity, pycnidial, globose to subglobose, unilocular or multilocular, thick-walled, glabrous. Ostiole 2560 µm wide, 12 ostiolar canals, centrally or laterally located. Conidiomatal wall 40150 µm wide, composed of thick-walled, brown cells of textura angularis at periclinal wall, thickening at basal and upper zone. Conidiophores hyaline, short, cylindrical to subcylindrical, branched at base, arising from the inner layer cells of the conidiomata. Conidiogenous cells 5–15 ×2–4 µm, hyaline, entoroblastic, phialidic, integrated, determinate, cylindrical to subcylindrical, tapered to the apices, with minute collarette, smooth-walled. Conidia 6–10 × 2–4 µm ( = 7.7 × 3.2 µm; n = 30), hyaline, fusiform, ellipsoid, subcylindrical, straight or slightly curved, unicellular, smooth-walled, guttulate. Beta conidia not observed.

 

Culture characteristics: Colony on PDA, reaching 20–30 mm diam, after 7d at 25, white, flattened, fluffy, with undulate to crenate margin, with dense, filamentous aerial mycelium on the surface, reverse white.

 

Material examined: Italy, Province of Forlì-Cesena, Santa Sofia, Campigna, on dead land branches of Prunus avium (Rosaceae), 23 March 2016, Erio Camporesi, IT2856A (MFLU 16-1132), living culture, MFLUCC 16-1144 = ICMP 21532 = KUMCC 16-0080.

 

Notes: This species has been reported in Argentina, Australia, France, Greece, Italy, New Zealand, Portugal, Spain, South Africa, and USA, with a wide host range, such as Actinidiaceae, Anacardiaceae, Apiaceae, Ebenaceae, Fabaceae, Fagaceae, ‎Grossulariaceae, Hydrangeaceae, Juglandaceae, Nyctaginaceae, Oleaceae, Onagraceae, Rosaceae, Rutaceae, Sapindaceae, Theaceae and Vitaceae (Udayanga et al. 2014). Diaporthe foeniculina is a pathogen on temperate and tropical fruits and can cause a stem-end rot of Citrus limonia (Udayanga et al. 2014). Our collection is a saprobe collected on Prunus avium.

 

 

 

Diaporthe foeniculina (MFLU 16-1132) a Herbarium specimen. b, c Appearance of black conidiomata on the host. d, e Vertical sections of conidiomata. f Ostiole. g, h Section of peridium. i–k Conidiophores, conidiogenous cells and developing conidia. l Germinating conidium. m–p Conidia. q Culture on PDA. Scale bars b = 1000 µm, c = 500 µm, de = 200 µm, fh = 50 µm, i = 5 µm, jk, m = 10 µm, l = 20 µm, np = 5 µm, q = 10 mm.

 

References:

 

Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.

 

 

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