Trichoderma saturnisporum Hammill, Mycologia

Thokala, Prameeladevi, Narayanasamy, Prabhakaran, Kamil, Deeba & Choudhary, Shiv Pratap, 2021, Polyphasic taxonomy of Indian Trichoderma species, Phytotaxa 502 (1), pp. 1-27 : 21

7. Trichoderma saturnisporum Hammill, Mycologia 6:, 970. Figure 9

Section—Longibrachiatum

Description:

Colony: 7.0– 8.5 cm growth was observed in 4 days on PDA medium. White fluffy pustules turning to grey-green colour with the age. The pustules uniformly spreaded throughout the plate. Reverse of the plate is yellow-green.

Conidiophores: Conidiophores arising from the aerial mycelium of developed pustules, asymmetrically branched, the branches producing phialides directly or rebranching, the secondary branches producing phialides along the length and ending in a single phialide; sometimes the main axis of a conidiophore is terminating in a sterile, septate, branched or unbranched, hypha-like elongation.

Phialides: Phialides mainly arising singly, less frequently in appressed to divergent whorls of 2–3, typically curved, ampulliform to broadly lageniform, sometimes hooked or sinuous.

Conidia: Conidia green, smooth walled but with conspicuous sinuate, bullate or wing like inflations of the outer wall, ellipsoidal, 4.5–7.5 × 3.5–4.5 µm.

Chlamydospores: Chlamydospores present, globose, 6.0–12.0 µm dia.

Culture examined:ITCC 7273 (Soil, Chandigarh) ITCC 7274 (Soil, Palampur, HP).

Diagnostic features: Conidiophores are asymmetrically branched producing single curved, ampulliform, lageniform, hooked or sinuous phialides directly.Conidia have conspicuous wing like inflations on the outer wall.

Ecology and habitats: Wood, herbaceous tissue, soil.

Figures

FIGURE 9. Trichoderma erinaceum (A) Growth on PDA, (B) Pustules, (C) Reverse of the plate, (D) Conidiophore branching, (E,F) Phialide disposition, (G) Spores, (H) Chlamydospores.