Talaromyces resedanus (McLennan and Ducker) A.J. Chen, Houbraken & Samson, A. J. Chen, Houbraken & Samson, 2020

Sun, Bing-Da, Chen, Amanda J., Houbraken, Jos, Frisvad, Jens C., Wu, Wen-Ping, Wei, Hai-Lei, Zhou, Yu-Guang, Jiang, Xian-Zhi & Samson, Robert A., 2020, New section and species in Talaromyces, MycoKeys 68, pp. 75-113: 75

publication ID

http://dx.doi.org/10.3897/mycokeys.68.52092

persistent identifier

http://treatment.plazi.org/id/71CF7A9A-5641-5A52-B1CF-4A720AC657EF

treatment provided by

MycoKeys by Pensoft

scientific name

Talaromyces resedanus (McLennan and Ducker) A.J. Chen, Houbraken & Samson
status

comb. nov.

Talaromyces resedanus (McLennan and Ducker) A.J. Chen, Houbraken & Samson   comb. nov. Fig. 10 View Figure 10

Penicillium resedanum   McLennan and Ducker, Aust. J. Bot. 2: 360. 1954. Basionym.

= Talaromyces omanensis   Halo, Maharachch., Al-Yahyai and Al-Sadi, Phytotaxa 404: 192. 2019.

Typus.

Australia, Frankston in solo arenoso acido, Holotype IMI 062877, culture ex-holotype CBS 181.71 = DTO 376-A7 = ATCC 22356 = FRR 578 = IMI 062877 = NRRL 578.

Additional material examined.

Sweden, soil in greenhouse, 1989, isolated by O. Constantinescu, culture CBS 184.90 = DTO 376-A8 = UPSC 2879.

ITS barcode.

MN864280. Alternative identification markers: BenA = MN863349, CaM = MN863326, RPB2 = MN969214.

In.

Talaromyces section Subinflati  

Colony diam, 7 d (mm).

CYA 19-21; CYA 30 °C 18-20; CYA 37 °C 8-11; MEA 23-25; MEA 30 °C 15-21; OA 26-28; YES 17-19; CREA No growth; CYAS 5-7; DG18 8-9.

Colony characters.

CYA 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium sulphur yellow (15) at center, white at edge; texture floccose; sporulation absent; soluble pigments absent; exudates clear droplets; reverse saffron (10). MEA 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium white and sulphur yellow (15); texture floccose; sporulation sparse; conidia en masse white to greyish yellow-green (68); soluble pigments absent; exudates clear droplets; reverse saffron (10). YES 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium white and buff (45); texture floccose; sporulation sparse; conidia en masse white to greyish yellow-green (68); soluble pigments absent; exudates clear droplets; reverse saffron (10). DG18 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium white; texture floccose; sporulation absent; soluble pigments absent; exudates absent; reverse cream white. OA 25 °C, 7 d: Colonies moderately deep, plane; margins entire; mycelium white and sulphur yellow (15); texture floccose; sporulation absent; soluble pigments absent; exudates clear droplets; reverse white. CREA 25 °C, 7 d: No growth.

Micromorphology.

Conidiophores monoverticillate, stipes smooth, 50-150 × 3-4.5 μm, phialides 3-9, flask shaped, 9-12 × 3-3.5 μm; conidia finely rough, ellipsoidal, 2-3 × 1.5-2 μm. Ascomata not observed.

Notes.

Talaromyces resedanus   grows restrictedly on DG18 and does not grow on CREA, two features shared with other taxa in section Subinflati   . The monoverticillate conidiophores can differentiate T. resedanus   from all reported section Subinflati   species. Talaromyces aerugineus   , T. flavus   , T. intermedius   , T. rotundus   , T. tardifaciens   also produce monoverticillate conidiophores, all of them except T. aerugineus   can produce ascospores. Talaromyces aerugineus   differs from T. resedanus   by its shorter conidiophores (10-20 × 2.5-5 μm) and large, globose to ellipsoidal conidia (3-8.5 × 2.5-5 μm).

This species was introduced as Penicillium resedanum   ( McLennan et al., 1954). Yilmaz et al. (2014) listed it as doubtful species because the ex-type culture CBS 181.71 was not viable at that time. We requested the lyophilized culture of CBS 181.71 and CBS 184.90 deposited in nitrogen, and successfully resurrected them. The concatenated alignment and the single gene phylogenies proved its assignment in section Subinflati   . Talaromyces omanensis   described by Halo et al. (2019) shares ITS, BenA and CaM (all 100% similarity) sequences with T. resedanus   CBS 184.90, have 99.7% (576/578), 98.3% (357/363), 98.8% (487/493) similarity with T. resedanus   CBS 181.71T. Its type culture SQUCC 13153 showed good sporulation on CYA and MEA and thus displayed green colony. The monoverticillate conidiophores, size and shape of stipes, phialides and conidia of T. omanensis   resemble those of T. resedanus   , except that conidiophores of T. omanensis   are rough under scanning electron microscope (SEM) ( Halo et al. 2019). The photo plate of T. omanensis   showed smooth conidiophores under microscope. Based on the molecular and morphological similarity, we considered T. omanensis   a synonym of T. resedanus   .

Kingdom

Fungi

Phylum

Ascomycota

Class

Eurotiomycetes

Order

Eurotiales

Family

Aspergillaceae

Genus

Talaromyces

Loc

Talaromyces resedanus (McLennan and Ducker) A.J. Chen, Houbraken & Samson

Sun, Bing-Da, Chen, Amanda J., Houbraken, Jos, Frisvad, Jens C., Wu, Wen-Ping, Wei, Hai-Lei, Zhou, Yu-Guang, Jiang, Xian-Zhi & Samson, Robert A. 2020
2020
Loc

Talaromyces omanensis

Halo, Maharachch., Al-Yahyai & Al-Sadi 2019
2019
Loc

Penicillium resedanum

McLennan & Ducker 1954
1954