Talaromyces loliensis (Pitt) Samson, Yilmaz & Frisvad, Stud. Mycol. 71:176. 2011. MycoBank MB560655. Fig. 46.
[equivalent to] Penicillium loliense Pitt, The genus Penicillium: 450. 1980.
In: Talaromyces section Islandici
Typus: IMI 216901, culture ex-type CBS 643.80 = ATCC 52252 = FRR 1798 = IMI 216901 = MUCL 31325 = IBT 4546.
ITS barcode: KF984888 (alternative markers: BenA = KF984658; CaM = KF984783)
Colony diam, 7 d (mm): CYA 10-13; CYA 30[degrees]C 11-12; CYA 37[degrees]C No growth; MEA 13-15; MEA 30[degrees]C 12-13; DG18 13-15; CYAS 7-8; OA 13-14; CREA 4-8; YES 13-15.
Colony morphology: CYA 25[degrees]C, 7 d: Colonies slightly raised at centre, slightly sulcate; margins narrow (1 mm), low, entire, plane; mycelium white and yellow (CBS 172.91 with orange mycelia); sporulation absent; exudates small clear droplets; soluble pigment very weak yellow around colonies; reverse centre deep yellow to deep orange (4A8-5A8) fading into light yellow to yellow (3A5-3A6). MEA 25[degrees]C, 7 d: Colonies slightly raised at centre, slightly sulcate; margins narrow (1 mm), low, entire, plane; mycelium white and yellow; sporulation absent to sparse; texture floccose and loosely funiculose; conidia en masse greyish green to dark green (28D4-28F4); exudates small clear droplets; soluble pigment absent; reverse centre brownish orange to brown (6C7-6D8). YES 25[degrees]C, 7 d: Colonies slightly raised at centre, slightly sulcate; margins narrow (1 mm), low, entire, plane; mycelium white (in margins) and yellow (in centre); sporulation absent; exudates few very small clear droplets; soluble pigment absent; reverse centre deep yellow to deep orange (4A8-5A8) fading into light yellow to pastel yellow (3A4-3A5). DG18 25[degrees]C, 7 d: Colonies slightly raised at centre, slightly sulcate; margins narrow (1 mm), low, entire, plane; mycelium white and yellow; sporulation absent; exudates absent; soluble pigment very weak yellow around colonies; reverse centre deep yellow to deep orange (4A8-5A8) fading into light yellow to yellow (3A5-3A6). OA 25[degrees]C, 7 d: Colonies deep, plane; margins narrow (1 mm), low, entire, plane, slimy yeast like; mycelium white and yellow; sporulation moderately dense; texture velvety and floccose; conidia en masse greyish green to dark green (28D4-28F4); exudates small orange and clear droplets; soluble pigment absent; reverse orange yellow. CREA, 25[degrees]C, 7 d: In some isolates acid production absent and in some isolates very weak acid production.
Micromorphology: Conidiophores biverticillate; stipes smooth walled, 45-115 x 2.3-3.2 [micro]m; metulae three to six, divergent, 6-12 x 2-3.6 [micro]m; phialides acerose, three to six per metulae, 7-15 x 2-4 [micro]m; conidia smooth, subglobose to ellipsoidal, some spores fusiform some spores just one ending has connections, 3-5 x 2.4-3.5 [micro]m.
Extrolites: Talaromyces loliensis produces mitorubrins and skyrin. No other known extrolites were detected, but two of the partly characterised extrolites were also found in other species in Talaromyces sect. Islandici.
Distinguishing characters: Talaromyces loliensis is characterised by restricted growth on most media. Colonies are fluffy and deep and have light yellow mycelia (Fig. 46). It resembles T. tratensis, however, T. tratensis produces yellow ascomata. Based on the ITS and BenA phylogenies, T. loliensis is closely related to T. islandicus. Talaromyces loliensis...